WO2017115679A1 - 組成物 - Google Patents
組成物 Download PDFInfo
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- WO2017115679A1 WO2017115679A1 PCT/JP2016/087747 JP2016087747W WO2017115679A1 WO 2017115679 A1 WO2017115679 A1 WO 2017115679A1 JP 2016087747 W JP2016087747 W JP 2016087747W WO 2017115679 A1 WO2017115679 A1 WO 2017115679A1
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- 239000000203 mixture Substances 0.000 title claims abstract description 67
- 150000003961 organosilicon compounds Chemical class 0.000 claims abstract description 60
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- 125000004665 trialkylsilyl group Chemical group 0.000 claims abstract description 45
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 34
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- 239000002184 metal Substances 0.000 claims abstract description 27
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- -1 siloxane skeleton Chemical group 0.000 claims description 138
- 125000000217 alkyl group Chemical group 0.000 claims description 88
- 125000004432 carbon atom Chemical group C* 0.000 claims description 85
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Images
Classifications
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Definitions
- the present invention relates to a composition for forming a film capable of imparting water repellency to various substrates.
- Patent Document 1 discloses that a precursor solution obtained by cohydrolyzing / condensation of organosilane and metal alkoxide is applied to the substrate surface.
- Transparent films have been proposed.
- Patent Document 2 proposes a silicon-containing organic fluorine-containing polymer having a perfluoroalkyl group.
- JP 2013-2131181 A JP-A-9-157388 JP 2014-234506 A
- the present inventors have obtained knowledge that heat resistance and light resistance may be insufficient when the compounds described in Patent Documents 1 and 2 are used. If the heat resistance and light resistance are insufficient, the film tends to deteriorate, resulting in a decrease in water repellency. In addition, when the composition described in Patent Document 3 is used, the light resistance is good, but the heat resistance may be inferior, and the film after film formation is likely to be clouded or smeared, substantially after film formation. A process of wiping the outermost surface is necessary.
- the present invention is compatible with water repellency, heat resistance and light resistance (hereinafter referred to as “weather resistance” by combining heat resistance and light resistance), and further, there is no cloudiness or smear after film formation, It aims at providing the composition used for formation of the membrane
- the present inventors have used not only water repellency but also heat resistance and light resistance by using a composition containing a specific organosilicon compound (a) and a metal compound (b).
- the present invention was completed by finding that a good film was obtained. That is, the composition according to the present invention includes at least one trialkylsilyl group, an organosilicon compound (a) having two or more hydrolyzable silicon groups, and at least one hydrolyzable group bonded to a metal atom.
- the organosilicon compound (a) is preferably a compound represented by the formula (Ia).
- Y represents a single bond or * -Si (R s2 ) 2 -L s1- .
- * represents a bond with an oxygen atom.
- Z represents an oxygen atom or a divalent hydrocarbon group having 1 to 10 carbon atoms.
- R a1 independently represents a hydrocarbon group or a trialkylsilyloxy group. However, when all of R a1 are hydrocarbon groups, the hydrocarbon group represented by R a1 is an alkyl group.
- R s1 and R s2 each independently represents an alkyl group having 1 to 10 carbon atoms.
- L s1 represents a divalent hydrocarbon group having 1 to 10 carbon atoms.
- X represents a hydrolyzable silicon-containing group having two or more hydrolyzable silicon groups.
- n1 represents an integer of 1 to 150.
- the hydrolyzable silicon-containing group is preferably a group represented by any one of formulas (X-1) to (X-3).
- L x1 and L x2 each represent a divalent hydrocarbon group having 1 to 20 carbon atoms, and methylene contained in the divalent hydrocarbon group
- the group (—CH 2 —) may be replaced by —O— or —O—Si (R x7 ) 2 —.
- R x1 to R x7 each represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms.
- X a1 independently represents a hydrolyzable group or a trialkoxysilyloxy group.
- X a2 independently represents a trialkylsilyl-containing group, a hydrocarbon chain-containing group, a siloxane skeleton-containing group, a hydrolyzable group, or a trialkoxysilyloxy group, and when X a2 is a hydrolyzable group, X a2 And X a1 may be the same or different.
- n2 represents an integer of 1 to 50.
- n3 represents an integer of 2 or more and 5 or less.
- n4 represents an integer of 0 or more and 5 or less.
- the ratio of the metal compound (b) to the organosilicon compound (a) is preferably 0.1 or more and 100 or less on a molar basis.
- the composition preferably further contains a solvent (c).
- cured material of a composition is also included by the technical scope of this invention.
- organosilicon compound (a) a compound represented by the following formula is preferable.
- Y represents a single bond or * -Si (R s2 ) 2 -L s1- .
- * represents a bond with an oxygen atom.
- Z represents an oxygen atom or a divalent hydrocarbon group having 1 to 10 carbon atoms.
- R a2 independently represents an alkyl group having 1 to 4 carbon atoms.
- R s1 and R s2 each independently represents a hydrocarbon group having 1 to 10 carbon atoms.
- L s1 represents a divalent hydrocarbon group having 1 to 10 carbon atoms.
- n1 represents an integer of 1 to 150.
- X represents a group represented by any one of formulas (X-1) to (X-3).
- L x1 and L x2 each represent a divalent hydrocarbon group having 1 to 20 carbon atoms, and methylene contained in the divalent hydrocarbon group
- the group (—CH 2 —) may be replaced by —O— or —O—Si (R x7 ) 2 —.
- R x1 to R x7 each represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms.
- X a1 independently represents a hydrolyzable group or a trialkoxysilyloxy group.
- X a2 independently represents a trialkylsilyl-containing group, a hydrocarbon chain-containing group, a siloxane skeleton-containing group, a hydrolyzable group, or a trialkoxysilyloxy group, and when X a2 is a hydrolyzable group, X a2 And X a1 may be the same or different.
- n2 represents an integer of 2 or more and 20 or less.
- n3 represents an integer of 2 or more and 5 or less.
- n4 represents an integer of 0 to 5.
- the compound represented by the following formula is a preferable compound as a raw material for the organosilicon compound (a).
- Z represents an oxygen atom or a divalent hydrocarbon group having 1 to 10 carbon atoms.
- R s1 independently represents a hydrocarbon group having 1 to 4 carbon atoms.
- R a2 and R s3 each independently represents an alkyl group having 1 to 4 carbon atoms.
- R y1 represents an alkenyl group having 2 to 10 carbon atoms.
- n1 represents an integer of 1 to 150.
- n14 represents an integer of 1 to 3.
- composition of the present invention contains a specific organosilicon compound (a) and a metal compound (b), it can provide a film having good heat resistance and light resistance in addition to water repellency. Furthermore, it is possible to provide a film that does not have white turbidity or smear after film formation and does not require a wiping process.
- FIG. 1 shows the spectral irradiance of “SP-9 250DB” manufactured by USHIO INC.
- the composition of the present invention comprises an organosilicon compound (a) having at least one trialkylsilyl group, two or more hydrolyzable silicon groups, and a metal having at least one hydrolyzable group bonded to a metal atom.
- Compound (b) is included.
- the trialkoxysilyl group derived from the organosilicon compound (a) reduces friction between the film obtained from the composition of the present invention and droplets (water droplets, oil droplets, etc.) and facilitates movement of the droplets. In addition, chemical and physical durability is improved, and heat resistance and light resistance are improved.
- the structure derived from the metal compound (b) substantially functions as a spacer and can further increase the water repellency of the film.
- the composition of the present invention has a water-repellent function enhanced, and at the same time, a film excellent in light resistance and heat resistance (hereinafter sometimes referred to as “weather resistance” in combination with light resistance and heat resistance). Can provide. Furthermore, it is possible to provide a film that does not have white turbidity or smear after film formation and does not require a wiping process. And since the organosilicon compound (a) of this invention has two or more hydrolysable silicon groups, it can couple
- the hydrolyzable silicon group means a group in which a group capable of forming a silanol group (Si (OH) group) by hydrolysis (hereinafter sometimes referred to as “hydrolyzable group”) is bonded to a silicon atom.
- a group in which at least one (preferably two or more, more preferably three) hydrolyzable groups are bonded to one silicon atom is preferable.
- the trialkylsilyl group and the hydrolyzable silicon group are linear or cyclic (including combinations of linear and cyclic, the same shall apply hereinafter) and / or linear or cyclic hydrocarbons. It is preferably bonded to a hydrolyzable silicon group via a dialkylsiloxane. Thereby, the water repellency by a trialkylsilyl group is exhibited more effectively.
- the dialkylsiloxane means a molecular chain in which silicon atoms to which two alkyl groups are bonded and oxygen atoms are alternately connected.
- the organosilicon compound (a) is preferably a compound represented by the formula (Ia).
- Y represents a single bond or * -Si (R s2 ) 2 -L s1- .
- * represents a bond with an oxygen atom.
- Z represents an oxygen atom or a divalent hydrocarbon group having 1 to 10 carbon atoms.
- R a1 independently represents a hydrocarbon group or a trialkylsilyloxy group. However, when all of R a1 are hydrocarbon groups, the hydrocarbon group represented by R a1 is an alkyl group.
- R s1 and R s2 each independently represents an alkyl group having 1 to 10 carbon atoms.
- L s1 represents a divalent hydrocarbon group having 1 to 10 carbon atoms.
- X represents a hydrolyzable silicon-containing group having two or more hydrolyzable silicon groups.
- n1 represents an integer of 1 to 150.
- the hydrocarbon group of R a1 preferably has 1 to 4, more preferably 1 to 3, and even more preferably 1 to 2 carbon atoms.
- the hydrocarbon group for R a1 may be either linear or branched, and is preferably linear.
- the hydrocarbon group for R a1 is preferably an aliphatic hydrocarbon group, and more preferably an alkyl group. Examples of the hydrocarbon group for R a1 include linear alkyl groups such as a methyl group, an ethyl group, a propyl group, and a butyl group.
- the number of carbon atoms of the alkyl group contained in the trialkylsilyloxy group in R a1 is preferably 1 to 4, more preferably 1 to 3, and still more preferably 1 to 2.
- the total number of carbon atoms of the three alkyl groups is preferably 9 or less, more preferably 6 or less. More preferably, it is 4 or less.
- the alkyl group contained in the trialkylsilyloxy group include a methyl group, an ethyl group, a propyl group, and a butyl group.
- the three alkyl groups may be the same or different from each other, and are preferably the same. Further, the (R a1 ) 3 Si— group or the trialkylsilyloxy group in which all R a1 are alkyl groups are preferably one or more, more preferably two or more, and particularly preferably three methyl groups. An alkyl group is included.
- trialkylsilyl groups include methyldiethylsilyl group, methylethylpropylsilyl group, methylethylbutylsilyl group Group, methyldipropylsilyl group, methylpropylbutylsilyl group, trimethylsilyl group in which one methyl group such as methyldibutylsilyl group is bonded to silicon atom; dimethylethylsilyl group, dimethylpropylsilyl group, dimethylbutylsilyl group A trialkylsilyl group in which two methyl groups such as a group are bonded to a silicon atom; a trimethylsilyl group; and the like.
- (R a1) 3 Si- group or a trialkylsilyl group where R a1 are all alkyl group the alkyl group contained in trialkylsilyl groups, in their entirety may be replaced by fluoroalkyl groups.
- the fluoroalkyl group include groups in which at least a part of the hydrogen atoms of the alkyl group are substituted with fluorine atoms.
- the fluoroalkyl group preferably has 1 to 4 carbon atoms, more preferably 1 to 3 carbon atoms, and still more preferably 1 to 2 carbon atoms.
- the number of substitution of fluorine atoms is preferably 1 or more and preferably 2 ⁇ n C +1 or less when the number of carbon atoms is n C.
- Fluoroalkyl groups include monofluoromethyl, difluoromethyl, trifluoromethyl (perfluoromethyl), monofluoroethyl, difluoroethyl, trifluoroethyl, tetrafluoroethyl, pentafluoroethyl ( Perfluoroethyl group), monofluoropropyl group, difluoropropyl group, trifluoropropyl group, tetrafluoropropyl group, pentafluoropropyl group, hexafluoropropyl group, heptafluoropropyl group (perfluoropropyl group), monofluorobutyl group , Difluorobutyl group, trifluorobutyl group, tetrafluorobutyl group, pentafluorobutyl group, hexafluorobutyl group, heptafluorobutyl group, oct
- the R a1 preferably an alkyl group or a trialkylsilyl group, a trialkylsilyl group is more preferable.
- two or more are preferably trialkylsilyloxy groups, and more preferably three are trialkylsilyloxy groups.
- (R a1 ) 3 Si—Z— (Si (R s1 ) 2 —O—) n1 —Y— may be referred to as a trialkylsilyl group-containing molecular chain.
- Y may be * —Si (R s2 ) 2 —L s1 — (wherein L s1 represents a divalent hydrocarbon group having 1 to 10 carbon atoms), and Z is 1 to C carbon atoms. It may be 10 hydrocarbon groups. Even if a hydrocarbon group is contained, since the balance is a dialkylsiloxane chain, the film has high chemical and physical durability, and is excellent in heat resistance and light resistance.
- L s1 or Z is a divalent hydrocarbon group
- the carbon number thereof is preferably 8 or less, more preferably 6 or less, still more preferably 4 or less, and preferably 1 or more.
- the divalent hydrocarbon group is preferably chain-like, and when it is chain-like, it may be either linear or branched.
- the divalent hydrocarbon group is preferably a divalent aliphatic hydrocarbon group, more preferably an alkylene group.
- Examples of the divalent hydrocarbon group include alkylene groups such as a methylene group, an ethylene group, a propylene group, and a butylene group.
- a part of the methylene group (—CH 2 —) of the divalent hydrocarbon group in L s1 or Z may be replaced with an oxygen atom, if necessary.
- Z is preferably an oxygen atom.
- Y is preferably an oxygen atom when X is a group represented by the formula (X-2) described later, and * -Si when X is a group represented by the formula (X-3) described later.
- a group represented by (R s2 ) 2 -L s1- is preferred.
- the carbon number of the alkyl group of R s1 and R s2 is preferably 1 to 4, more preferably 1 to 3, and still more preferably 1 to 2.
- Examples of the alkyl group for R s1 and R s2 include a methyl group, an ethyl group, a propyl group, and a butyl group.
- Examples of the dialkylsiloxane chain represented by — (Si (R s1 ) 2 —O—) n1 — include (poly) dimethylsiloxane chain and (poly) diethylsiloxane chain.
- N1 is 1 or more, preferably 150 or less, more preferably 100 or less, still more preferably 60 or less, particularly preferably 50 or less, and preferably 3 or more.
- the number of elements constituting the longest straight chain contained in —Z— (Si (R s1 ) 2 —O—) n1 —Y— is preferably 2 or more, more preferably 6 or more, and still more preferably 15 or more. Preferably, it is 1200 or less, more preferably 700 or less, and even more preferably 500 or less.
- the hydrolyzable silicon-containing group of X may be a group having two or more hydrolyzable silicon groups, for example, a group in which the hydrolyzable silicon group is bonded to a chain or cyclic base.
- the base is preferably a hydrocarbon and / or a (poly) dialkylsiloxane.
- X is preferably a group represented by any one of formulas (X-1) to (X-3).
- L x1 and L x2 each represent a divalent hydrocarbon group having 1 to 20 carbon atoms, and methylene contained in the divalent hydrocarbon group
- the group (—CH 2 —) may be replaced by —O— or —O—Si (R x7 ) 2 —.
- R x1 to R x7 each represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms.
- X a1 independently represents a hydrolyzable group or a trialkoxysilyloxy group.
- X a2 independently represents a hydrolyzable group, a trialkoxysilyloxy group, a hydrocarbon chain-containing group, a siloxane skeleton-containing group or a trialkylsilyl group-containing molecular chain, and X a2 represents a hydrolyzable group or a trialkoxy group.
- X a2 and X a1 may be the same or different.
- n2 represents an integer of 2 or more and 20 or less.
- n3 represents an integer of 2 or more and 5 or less.
- n4 represents an integer of 0 or more and 5 or less.
- the carbon number of the divalent hydrocarbon group of L x1 to L x2 is preferably 10 or less, more preferably 6 or less, still more preferably 4 or less, and preferably 1 or more.
- the divalent hydrocarbon group of L x1 to L x2 is preferably a chain, and may be linear or branched.
- the divalent hydrocarbon group of L x1 to L x2 is preferably a divalent aliphatic hydrocarbon group, and more preferably an alkylene group.
- Examples of the divalent hydrocarbon group of L x1 to L x2 include alkylene groups such as a methylene group, an ethylene group, a propylene group, and a butylene group.
- L x1 2 divalent methylene group contained in the hydrocarbon group ⁇ L x2 (-CH 2 -) is -O- or -Si (R x7) If replace 2 -O-, included in the L x1 ⁇ L x2 among closest methylene group trimethylsilyl group - methylene group (-CH 2) (-CH 2 - ) that it is replaced preferred.
- the methylene group (—CH 2 —) directly bonded to —Si (X a1 ) 2 (X a2 ) may be replaced with —O— or —Si (R x7 ) 2 —O—, It is not necessary to replace it, and it is preferable not to replace it.
- L x1 and L x2 include the following groups. However, * represents a bond and * on the left side is the side close to the trimethylsilyl group.
- the number of carbon atoms of the hydrocarbon group of R x1 to R x7 is preferably 1 to 8, more preferably 1 to 6, and further preferably 1 to 4.
- the hydrocarbon groups of R x1 to R x7 may be linear or cyclic, and may be linear or branched.
- the hydrocarbon group of R x1 to R x7 is preferably an aliphatic hydrocarbon group, more preferably an alkyl group.
- Examples of the hydrocarbon group represented by R x1 to R x7 include alkyl groups such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, and an octyl group.
- Examples of the hydrolyzable group for X a1 and X a2 include an alkoxy group having 1 to 4 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, and a butoxy group; a hydroxy group; an acetoxy group; a chlorine atom; an isocyanate group; An alkoxy group and an isocyanate group are preferable.
- the alkoxy groups contained in the trialkoxysilyloxy groups of X a1 and X a2 may be the same or different, and examples thereof include an alkoxy group having 1 to 4 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, and a butoxy group.
- the trialkoxysilyloxy group of X a1 and X a2 is particularly preferably a trimethoxysilyloxy group or a triethoxysilyloxy group.
- the hydrocarbon chain-containing group of X a2 contains a hydrocarbon chain, and the number of elements constituting the hydrocarbon chain is a chain-like or cyclic hydrocarbon that connects a trialkylsilyl group and a hydrolyzable silicon group, and It means a group having less than the number of elements in the chain or cyclic dialkylsiloxane. Moreover, it is preferable that the longest linear carbon number of the hydrocarbon chain is smaller than the number of elements of the trialkylsilyl group-containing molecular chain.
- the hydrocarbon chain-containing group is usually composed only of a hydrocarbon group (hydrocarbon chain), but if necessary, a group in which a part of the methylene group (—CH 2 —) of the hydrocarbon chain is replaced with an oxygen atom. It may be. Further, the methylene group (—CH 2 —) adjacent to the Si atom is not replaced with an oxygen atom, and two consecutive methylene groups (—CH 2 —) are not replaced with an oxygen atom at the same time.
- the carbon number of the hydrocarbon chain portion means the number of carbon atoms constituting the hydrocarbon group (hydrocarbon chain) in the oxygen-nonsubstituted hydrocarbon chain-containing group, and the oxygen-substituted hydrocarbon chain-containing group.
- the number of carbon atoms is assumed assuming that the oxygen atom is a methylene group (—CH 2 —).
- the hydrocarbon chain-containing group will be described by taking an oxygen-nonsubstituted hydrocarbon chain-containing group (that is, a monovalent hydrocarbon group) as an example.
- the methylene group (— Part of CH 2 —) can be replaced with oxygen atoms.
- the carbon number of the hydrocarbon chain-containing group is preferably 1 to 3, more preferably 1, when it is a hydrocarbon group.
- the hydrocarbon chain-containing group in the case of a hydrocarbon group
- the hydrocarbon chain-containing group in the case of a hydrocarbon group
- the saturated aliphatic hydrocarbon chain-containing group is more preferably an alkyl group such as a methyl group, an ethyl group, or a propyl group.
- Examples of the group in which a partial methylene group (—CH 2 —) of the saturated aliphatic hydrocarbon group is replaced with an oxygen atom include a group having a (poly) ethylene glycol unit.
- the siloxane skeleton-containing group of X a2 contains a siloxane unit (Si—O—) and is a linear or cyclic hydrocarbon and / or a linear or cyclic dialkylsiloxane that connects a trialkylsilyl group and a hydrolyzable silicon group. Any element may be used as long as it is composed of a smaller number of elements than the number of elements that constitutes. As a result, the siloxane skeleton-containing group is a group having a shorter length than the trialkylsilyl group-containing molecular chain or a small steric spread (bulk height).
- the siloxane skeleton-containing group is preferably a chain, and may be linear or branched.
- the siloxane unit (Si—O—) is preferably a dialkylsilyloxy group.
- the dialkylsilyloxy group include a dimethylsilyloxy group and a diethylsilyloxy group.
- the number of repeating siloxane units (Si—O—) is preferably 1 or more, preferably 5 or less, more preferably 3 or less.
- the siloxane skeleton-containing group may contain a divalent hydrocarbon group in a part of the siloxane skeleton.
- a part of oxygen atoms in the siloxane skeleton may be replaced with a divalent hydrocarbon group.
- the divalent hydrocarbon group that may replace some oxygen atoms of the siloxane skeleton the divalent hydrocarbon that may replace oxygen atoms of the dialkylsiloxane chain contained in the trialkylsilyl group-containing molecular chain
- a group similar to the group can be preferably exemplified.
- the terminal (free end) silicon atom of the siloxane skeleton-containing group is a hydrolyzable group for forming a siloxane unit (Si—O—) with an adjacent silicon atom or the like, as well as a hydrocarbon group (preferably an alkyl group). Group) and the like.
- the siloxane skeleton-containing group has a trialkylsilyl group, but can function as a spacer if the number of elements is smaller than the coexisting trialkylsilyl group-containing molecular chain. Even when the siloxane skeleton-containing group includes a trialkylsilyl group, the alkyl group of the trialkylsilyl group may be replaced with a fluoroalkyl group.
- the number of elements of the siloxane skeleton-containing group is preferably 100 or less, more preferably 50 or less, still more preferably 30 or less, and usually 10 or more. Further, the difference in the number of elements between the trialkylsilyl group-containing molecular chain and the siloxane skeleton-containing group is preferably 10 or more, more preferably 20 or more, usually preferably 1000 or less, more preferably 500 or less, and still more preferably 200. It is as follows.
- the siloxane skeleton-containing group is preferably a group represented by the formula (x1).
- R x8 each independently represents a hydrocarbon group or a hydroxy group.
- R x9 each independently represents an alkyl group having 1 to 4 carbon atoms.
- n5 represents an integer of 0 or more and 4 or less. * Represents a bond with a silicon atom.
- examples of the hydrocarbon group represented by R x8 include the same groups as those exemplified as the hydrocarbon group represented by R x1 , preferably an aliphatic hydrocarbon group, and preferably a methyl group or an ethyl group. It is more preferably a linear alkyl group such as propyl group or butyl group.
- R x8 is preferably a hydrocarbon group.
- the methylene group contained in the hydrocarbon group represented by R x8 may be replaced with an oxygen atom.
- the alkyl group having 1 to 4 carbon atoms R x9 include the same groups as described as R s1 in formula (Ia).
- n5 is preferably an integer of 0 or more and 3 or less.
- siloxane skeleton-containing group examples include groups represented by the following formula.
- X a1 is preferably an alkoxy group or a trialkoxysilyloxy group.
- X a2 is preferably a hydrolyzable group or a trialkoxysilyloxy group, and is preferably an alkoxy group or a trialkoxysilyloxy group.
- n2 is preferably an integer of 2 or more and 10 or less, more preferably an integer of 1 or more and 8 or less.
- n3 is preferably an integer of 2 or more and 4 or less.
- n4 is preferably an integer of 0 or more and 4 or less.
- X is preferably a group represented by the following formula.
- X a3 represents a hydrolyzable group or trialkoxysilyloxy group
- n6 represents an integer of 2 to 10
- n7 represents an integer of 1 to 20
- n8 represents an integer of 1 to 20. * Represents a bond with Y.
- the organosilicon compound (a) is preferably a compound represented by the formula (Ia-1).
- R a2 independently represents an alkyl group having 1 to 4 carbon atoms.
- X represents a group represented by any one of formulas (X-1) to (X-3).
- L x1 to L x3 , R x1 to R x8 , B x1 to B x3 , X a1 to X a2 , and n2 to n4 are as defined above. . ]]
- the carbon number of the alkyl group represented by R a2 is preferably 1 to 3, more preferably 1 to 2, and particularly preferably 1.
- Examples of the alkyl group for R a2 include a methyl group, an ethyl group, and a propyl group.
- organosilicon compound (a) examples include compounds represented by the following formula.
- n20 is preferably an integer of 1 to 30, more preferably an integer of 1 to 20.
- Me means a methyl group
- TMS means a trimethylsilyloxy group.
- (Y1) to (Y4) each represent a group represented by the following formula.
- organosilicon compound (a) of the present invention can be synthesized, for example, by the scheme shown in the following formula.
- L x1 , L x2 , R a1 , R s1 , R x3 , R x4 , R x5 , R x6 , X a1 , X a2 , Y, n1, n3, and n4 are as defined above.
- R s3 represents an alkyl group having 1 to 4 carbon atoms.
- R y1 and R x10 each independently represents an alkenyl group having 2 to 10 carbon atoms.
- X x1 represents a halogen atom.
- n9 represents an integer of 1 to 3.
- n14 represents an integer of 1 to 3.
- R represents an alkyl group, and M 1 represents an alkali metal.
- Examples of the alkyl group having 1 to 4 carbon atoms of R s3 include the same groups as the alkyl group of R a2 , and the carbon number of the alkyl group of R s3 is preferably 1 to 3, more preferably 1 to 2, Particularly preferred is 1.
- Examples of the alkyl group for R s3 include a methyl group, an ethyl group, and a propyl group.
- the carbon number of the alkenyl group of R y1 and R x10 is preferably 2 to 5, more preferably 2 to 3, and particularly preferably 2.
- Examples of the alkenyl group for R y1 and R x10 include a vinyl group, a propenyl group, a butenyl group, and a pentenyl group.
- organosilicon compound (a) for example, a compound having a trialkylsilyl group and an M 1 O— group (M 1 represents an alkali metal) (hereinafter referred to as “alkali metal oxide”).
- alkali metal oxide a compound having a trialkylsilyl group and an M 1 O— group
- alkali metal oxide an alkali metal
- the carbon-carbon double bond derived from the alkenyl group of the obtained compound is reacted with a silicon compound having a cyclic alkylsiloxane or dialkylsilyl group (steps (4) and (6)), and the alkenyl group has at least 1 And a silicon compound in which at least one hydrolyzable group is bonded to a silicon atom or a silicon compound in which at least one hydrogen atom and at least one hydrolyzable group are bonded to a silicon atom (step ( 5), (7), (8)), and the organosilicon compound (a) can be produced.
- R a2 , R s1 , R s3 , R y1 , Z, n1, and n14 are as defined above.
- the alkali metal oxide can be produced, for example, by reacting a compound having a tris (trialkylsilyloxy) silyl group and a hydroxy group with an organic alkali metal compound (RM 1 ) (step (1)). ).
- the alkali metal in M 1 of the organic alkali metal compound (R-M 1), lithium is preferred as the organic alkali metal compound (R-M 1), n-butyl lithium, sec- butyl lithium, tert- butyl lithium In particular, n-butyllithium is preferable.
- the halogen atom for X x1 include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom, and a chlorine atom is preferable.
- Catalysts include chloroplatinic acid, platinum (0) -1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex, tetrakis (triphenylphosphine) platinum (0), dichlorobis (triphenylphosphine) Examples thereof include platinum (II), dichlorobis (acetonitrile) platinum (II), dichlorobis (benzonitrile) platinum (II), dichloro (1,5-cyclooctadiene) platinum and the like.
- the metal compound (b) contained in the composition of the present invention at least one hydrolyzable group is bonded to the metal atom.
- the metal compound (b) preferably has no bulky group as compared with the organosilicon compound (a). As a result, the structure derived from the metal compound (b) substantially functions as a spacer, and the water repellency of the resulting film is enhanced.
- the metal compound (b) is preferably a compound represented by the formula (Ib-1) or the formula (Ib-2), and more preferably a compound represented by the formula (Ib-1).
- R b1 represents a siloxane skeleton-containing group, a hydrocarbon chain-containing group, a hydrolyzable group or a fluorocarbon-containing group, and a plurality of X b1 are independently hydrolyzable.
- X b2 represents a siloxane skeleton-containing group, a hydrocarbon chain-containing group or a hydrolyzable group.
- R b1 and X b1 may be the same or different.
- R b1 and X b2 may be the same or different among a plurality of formulas (Ib-1).
- M represents a trivalent or tetravalent metal atom capable of forming a metal alkoxide.
- m1 represents an integer of 0 or 1 depending on M. ]
- R b3 represents a hydrolyzable silane oligomer residue
- X b3 represents a hydrolyzable group, a fluorine-containing alkyl group having 1 to 4 carbon atoms, or a group having 1 to 4 carbon atoms. Represents an alkyl group.
- the metal in M includes a semimetal such as Si or Ge.
- M include trivalent metals such as Al, Fe, and In; tetravalent metals such as Hf, Si, Ti, Sn, and Zr; and the like. Trivalent metals and tetravalent metals are preferable. More preferred are trivalent metals such as Al, Fe and In; tetravalent metals such as Hf, Si, Ti, Sn and Zr; more preferred are Al, Si, Ti and Zr, and particularly preferred is Si. is there.
- examples of the hydrolyzable group of R b1 , X b1 , and X b2 include the same hydrolyzable groups as those of the organosilicon compound (a), and an alkoxy group or an isocyanate group is preferable.
- An alkoxy group having 1 to 4 carbon atoms is more preferable, and an alkoxy group having 1 to 2 carbon atoms is more preferable.
- the hydrolyzable groups of the organosilicon compound (a) and the metal compound (b) may be the same or different, and are preferably the same.
- the hydrolyzable groups of the organosilicon compound (a) and the metal compound (b) are preferably all alkoxy groups having 1 to 4 carbon atoms, and the alkoxy groups have 1 to 2 carbon atoms. It is more preferable.
- the number of hydrolyzable groups is preferably 1 or more, more preferably 2 or more, still more preferably 3 or more, and preferably 4 or less.
- the number of elements of the siloxane skeleton-containing group, hydrocarbon chain-containing group of R b1 , X b2 or fluorocarbon-containing group of R b1 is the same as that of the trialkylsilyl group of the organic compound (a).
- the number is preferably smaller than the number of elements of the chain or cyclic hydrocarbon and / or the chain or cyclic dialkylsiloxane connecting the decomposable silicon group.
- the longest linear carbon number contained in the siloxane skeleton-containing group, hydrocarbon chain-containing group of R b1 , X b2 or the fluorocarbon-containing group of R b1 is larger than the number of elements of the molecular chain containing the trialkylsilyl group. It is preferable that the amount is small.
- the structure derived from the metal compound (b) can act as a spacer.
- the siloxane skeleton-containing group for R b1 and X b2 include the same groups as the siloxane skeleton-containing group for X a2 .
- examples of the hydrocarbon chain-containing group for R b1 and X b2 include the same groups as the hydrocarbon chain-containing group for X a2 .
- the fluorocarbon-containing group represented by R b1 is preferably a group having a fluoroalkyl group at the terminal, and particularly preferably a group having a trifluoromethyl group at the terminal.
- a group represented by the formula (f1) is preferable.
- R f1 each independently represents a fluorine atom or an alkyl group having 1 to 20 carbon atoms substituted by one or more fluorine atoms.
- R b4 each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- L f1 independently represents —O—, —COO—, —OCO—, —NR f2 —, —NR f2 CO— or —CONR f2 — (R f2 represents a hydrogen atom, a lower alkyl group or lower Fluorine-containing alkyl group).
- h1 to h5 are each independently an integer of 0 to 100, and the total value of h1 to h5 is 100 or less.
- the order of each repeating unit attached with h1 to h5 and enclosed in parentheses is arbitrary in the formula. * Represents a bond with M. ]
- R f1 is preferably a fluorine atom or a perfluoroalkyl group having 1 to 10 carbon atoms (more preferably 1 to 5 carbon atoms).
- R b4 is preferably a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- L f1 is preferably —O—, —COO—, or —OCO—.
- h1 is preferably 1 or more and 30 or less, more preferably 1 or more and 25 or less, still more preferably 1 or more and 10 or less, particularly preferably 1 or more and 5 or less, and most preferably 1 or 2.
- h2 is preferably 0 or more and 15 or less, more preferably 0 or more and 10 or less.
- h3 is preferably 0 or more and 5 or less, more preferably 0 or more and 2 or less.
- h4 is preferably 0 or more and 4 or less, more preferably 0 or more and 2 or less.
- h5 is preferably 0 or more and 4 or less, more preferably 0 or more and 2 or less.
- the total value of h1 to h5 is preferably 3 or more, more preferably 5 or more, preferably 80 or less, more preferably 50 or less, and still more preferably 20 or less.
- R f1 is a fluorine atom or a perfluoroalkyl having 1 to 5 carbon atoms
- R b4 is a hydrogen atom
- h3, h4 and h5 are all 0, h1 is 1 or more and 5 or less, and h2 is 0. It is preferably 5 or less.
- fluorocarbon-containing group examples include C r1 F 2r1 + 1 — (r1 is an integer of 1 to 12), CF 3 CH 2 O (CH 2 ) r2 —, CF 3 (CH 2 ) r3 Si (CH 3 ) 2 (CH 2 ) r2 —, CF 3 COO (CH 2 ) r2 — (r2 is 5 to 20, preferably 8 to 15, and r3 is 1 to 7, preferably 2 to 6 CF 3 (CF 2 ) r 4 — (CH 2 ) r 5 —, CF 3 (CF 2 ) r 4 —C 6 H 4 — (wherein r 4 is 1 to 10, preferably 3 to 7 and all of r5 are 1 to 5, preferably 2 to 4).
- fluorocarbon-containing group examples include a fluoroalkyl group, a (fluoroalkoxy) alkyl group, a (fluoroalkylsilyl) alkyl group, a (fluoroalkylcarbonyloxy) alkyl group, a (fluoroalkyl) aryl group, and a (fluoroalkyl) alkenyl group.
- fluoroalkyl group a fluoroalkyl group, a (fluoroalkoxy) alkyl group, a (fluoroalkylsilyl) alkyl group, a (fluoroalkylcarbonyloxy) alkyl group, a (fluoroalkyl) aryl group, and a (fluoroalkyl) alkenyl group.
- fluoroalkyl group examples include a fluoroalkyl group, a (fluoroalkoxy) alkyl group, a (fluoroalkylsilyl
- fluoroalkyl group examples include fluoromethyl group, fluoroethyl group, fluoropropyl group, fluorobutyl group, fluoropentyl group, fluorohexyl group, fluoroheptyl group, fluorooctyl group, fluorononyl group, fluorodecyl group, fluoro Examples thereof include a fluoroalkyl group having 1 to 12 carbon atoms such as an undecyl group and a fluorododecyl group.
- Examples of the (fluoroalkoxy) alkyl group include (fluoromethoxy) C 5-20 alkyl group, (fluoroethoxy) C 5-20 alkyl group, (fluoropropoxy) C 5-20 alkyl group, (fluorobutoxy) C 5- Examples include 20 alkyl groups.
- Examples of the (fluoroalkylsilyl) alkyl group include (fluoromethylsilyl) C 5-20 alkyl group, (fluoroethylsilyl) C 5-20 alkyl group, (fluoropropylsilyl) C 5-20 alkyl group, ( fluorobutyl ) silyl) C 5-20 alkyl group, (fluoropentyl silyl) C 5-20 alkyl group, (fluoro hexylsilyl) C 5-20 alkyl group, (Puchirushiriru to fluoro) C 5-20 alkyl group, (perfluorooctyl silyl) And C 5-20 alkyl group.
- (fluoroalkylcarbonyloxy) alkyl group (fluoromethylcarbonyloxy) C 5-20 alkyl group, (fluoroethylcarbonyloxy) C 5-20 alkyl group, (fluoropropylcarbonyloxy) C 5-20 alkyl group, ( Fluorobutylcarbonyloxy ) C 5-20 alkyl group and the like can be mentioned.
- Examples of the (fluoroalkyl) aryl group include (C 1-8 fluoroalkyl) phenyl group and (C 1-8 fluoroalkyl) naphthyl group.
- Examples of the (fluoroalkyl) alkenyl group include (C 1-17 fluoroalkyl).
- Vinyl group, and (fluoroalkyl) alkynyl group includes (C 1-17 fluoroalkyl) ethynyl group.
- R b1 is preferably a siloxane skeleton-containing group, a hydrocarbon chain-containing group, or a hydrolyzable group, more preferably a siloxane skeleton-containing group or a hydrolyzable group, and a hydrolyzable group. Is more preferable.
- X b2 is preferably a siloxane skeleton-containing group or a hydrolyzable group, and more preferably a hydrolyzable group.
- the number of silicon atoms contained in the hydrolyzable silane oligomer residue of R b3 is, for example, 3 or more, preferably 5 or more, more preferably 7 or more.
- the condensation number is preferably 15 or less, more preferably 13 or less, and still more preferably 10 or less.
- examples of the alkoxy group include a methoxy group, an ethoxy group, a propoxy group, and a butoxy group, and a methoxy group and an ethoxy group are preferable.
- the oligomer residue may have one or more of these alkoxy groups, and preferably has one.
- the hydrolyzable silane oligomer residue is preferably a group represented by the formula (f2).
- X b4 each independently represents a hydrolyzable group, an alkyl group having 1 to 4 carbon atoms, or a fluorine-containing alkyl group having 1 to 4 carbon atoms.
- h6 is an integer of 0 or more and 100 or less. * Represents a bond with Si.
- the hydrolyzable group for X b4 is preferably an alkoxy group having 1 to 4 carbon atoms (preferably 1 to 2) such as a methoxy group, an ethoxy group, a propoxy group or a butoxy group; an allyl group.
- h6 is preferably 0 or more and 10 or less, more preferably 0 or more and 7 or less. It is also preferred that at least one of X is a lower fluorine-containing alkyl group. Of X, at least one is preferably a hydrolyzable group (particularly a methoxy group, an ethoxy group, or an allyl group).
- X is preferably a hydrolyzable group or a fluorine-containing alkyl group having 1 to 4 carbon atoms.
- hydrolyzable silane oligomer residue of R b3 examples include (C 2 H 5 O) 3 Si— (OSi (OC 2 H 5 ) 2 ) 4 O— *, (CH 3 O) 2 (CF 3 CH 2 CH 2 ) Si— (OSi (OCH 3 ) (CH 2 CH 2 CF 3 )) 4 —O— * and the like.
- an alkoxy group having 1 to 4 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, or a butoxy group; hydrogen Atoms; cyano groups; allyl groups, and isocyanate groups; alkoxy groups are preferable, and ethoxy groups, methoxy groups, and isocyanate groups are particularly preferable.
- X b3 is preferably a hydrolyzable group, a fluorine-containing alkyl group having 1 to 4 carbon atoms, or an O— group.
- Examples of the metal compound (b) include structures represented by the following formulas (2-1) to (2-5) when M is Si.
- each of X b5 independently represents a hydrolyzable group (preferably an alkoxy group or an isocyanate group).
- examples of the compound having a fluorocarbon-containing group include CF 3 —Si— (OCH 3 ) 3 , C j F 2j + 1 —Si— (OC 2 H 5 ) 3 ( j is an integer of 1 to 12, among which C 4 F 9 —Si— (OC 2 H 5 ) 3 , C 6 F 13 —Si— (OC 2 H 5 ) 3 , C 7 F 15 —Si— (OC 2 H 5 ) 3 and C 8 F 17 —Si— (OC 2 H 5 ) 3 are preferred.
- CF 3 (CF 2 ) m — (CH 2 ) n SiCl 3 , CF 3 (CF 2 ) m — (CH 2 ) n Si (OCH 3 ) 3 , CF 3 (CF 2 ) m — (CH 2 ) n Si (OC 2 H 5 ) 3 may also be mentioned (m is 1 to 10, preferably 3 to 7, and n is 1 to 5, preferably 2 to 4. ).
- CF 3 (CF 2 ) p — (CH 2 ) q —Si— (CH 2 CH ⁇ CH 2 ) 3 can also be mentioned (p is 2 to 10, preferably 2 to 8, and q Are all 1 to 5, preferably 2 to 4).
- examples of the compound represented by the formula (Ib-2) include (H 5 C 2 O) 3 —Si -(OSi (OC 2 H 5 ) 2 ) 4 OC 2 H 5 , Si (OCH 3 ) 2 (CH 2 CH 2 CF 3 )-(OSi (OCH 3 ) (CH 2 CH 2 CF 3 )) 4 -OCH 3 etc.
- the ratio of the metal compound (b) to the organosilicon compound (a) is preferably 0.1 or more, more preferably on a molar basis. Is 1 or more, more preferably 2 or more, preferably 100 or less, more preferably 50 or less, still more preferably 30 or less, and even more preferably 25 or less.
- the content is usually 50% by mass or less, preferably 25% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less.
- the composition of the present invention comprises, in addition to the organosilicon compound (a) and the metal compound (b), another organosilicon compound (a1) having at least one trialkylsilyl group and one hydrolyzable silicon group. May be included.
- the trialkylsilyl group and hydrolyzable silicon group of the other organosilicon compound (a1) include the same groups as the trialkylsilyl group and hydrolyzable silicon group of the organosilicon compound (a).
- the other organosilicon compound (a1) is preferably a compound represented by the formula (a1).
- Y 1 represents an oxygen atom or a divalent hydrocarbon group having 1 to 10 carbon atoms.
- Z 1 represents a single bond or —L s2 —Si (R s5 ) 2 —.
- R a3 independently represents a hydrocarbon group or a trialkylsilyloxy group. However, when all of R a3 are hydrocarbon groups, the hydrocarbon group represented by R a3 is an alkyl group.
- R s4 and R s5 each independently represents a hydrocarbon group having 1 to 10 carbon atoms.
- L s2 represents a divalent hydrocarbon group having 1 to 10 carbon atoms.
- X a3 each independently represents a hydrolyzable group or a trialkoxysilyloxy group.
- X a4 independently represents a trialkylsilyl group-containing molecular chain, a hydrocarbon chain-containing group, a siloxane skeleton-containing group, a hydrolyzable group, or a trialkoxysilyloxy group, and when X a4 is a hydrolyzable group, X a4 and X a3 may be the same or different.
- n11 represents an integer of 1 to 100.
- Examples of the divalent hydrocarbon group having 1 to 10 carbon atoms of Y 1 or L s2 include the same groups as those exemplified as the divalent hydrocarbon group having 1 to 10 carbon atoms of Z.
- Z 1 is preferably a single bond.
- R a3 includes the same groups as those exemplified as R a1 , preferably an alkyl group or a trialkylsilyloxy group, and more preferably a trialkylsilyl group.
- Examples of the alkyl group for R s4 and R s5 include the same groups as those exemplified as R s1 and R s2 .
- dialkylsiloxane chain represented by (—Si (R s4 ) 2 —O—) n11 examples include a (poly) dimethylsiloxane chain and a (poly) diethylsiloxane chain.
- n11 is 1 or more, preferably 100 or less, more preferably 80 or less, still more preferably 50 or less, particularly preferably 20 or less, and most preferably 15 or less.
- the number of elements constituting the longest straight chain contained in —Z 1 — (Si (R s4 ) 2 —O—) n11 —Y 1 — is preferably 24 or more, more preferably 40 or more, and still more preferably It is 50 or more, preferably 1200 or less, more preferably 700 or less, and further preferably 250 or less.
- organosilicon compound (a1) examples include compounds represented by the following formulas.
- X a6 represents a hydrolyzable group (particularly an alkoxy group having 1 to 4 carbon atoms)
- n12 represents an integer of 1 to 12.
- n13 represents an integer of 1 to 4.
- the composition of the present invention preferably further contains a solvent (c).
- Solvent (c) includes water; hydrophilic organic solvents such as alcohol solvents, ether solvents, ketone solvents, ester solvents and amide solvents; hydrophobic solvents such as aromatic hydrocarbon solvents and saturated hydrocarbon solvents These may be used alone or in combination of two or more.
- the alcohol solvent include methanol, ethanol, propanol, isopropyl alcohol, butanol, ethylene glycol, propylene glycol, and diethylene glycol.
- the ether solvent include dimethoxyethane, tetrahydrofuran, and dioxane.
- Examples of the solvent include acetone and methyl ethyl ketone, examples of the ester solvent include ethyl acetate and butyl acetate, examples of the amide solvent include dimethylformamide, and examples of the aromatic hydrocarbon solvent include Examples of the saturated hydrocarbon solvent include benzene, toluene, and xylene. Examples of the saturated hydrocarbon solvent include hexane and cyclohexane.
- alcohol solvents and ketone solvents are preferable and may contain water.
- the content of water in the solvent (c) is preferably 0.1% by mass or more, more preferably 5% by mass or more, further preferably 10% by mass or more, and preferably 90% by mass or less. More preferably, it is 70 mass% or less, More preferably, it is 50 mass% or less.
- the solvent (c) is preferably 0.1 parts by mass or more, more preferably 5 parts by mass or more, and further preferably 10 parts by mass with respect to the total of 1 part by mass of the organosilicon compound (a) and the metal compound (b). As described above, it is particularly preferably 12 parts by mass or more, preferably 100 parts by mass or less, more preferably 80 parts by mass or less, and further preferably 50 parts by mass or less. When the amount of the solvent (c) is within this range, the thickness of the film can be easily controlled.
- the composition of the present invention may further contain a catalyst (d).
- the catalyst (d) is not particularly limited as long as it can act as a hydrolysis catalyst for a hydrolyzable group bonded to a silicon atom, and examples thereof include acidic compounds; basic compounds; organometallic compounds; Examples of the acidic compound include inorganic acids such as hydrochloric acid and nitric acid; organic acids such as acetic acid; Examples of the basic compound include ammonia, amines, and the like.
- organometallic compound examples include organometallic compounds having a metal element such as Al, Fe, Zn, Sn, and Zr as a central metal, and organoaluminum compounds such as an aluminum acetylacetone complex and an aluminum ethylacetoacetate complex; iron octylate Organic zinc compounds such as zinc acetylacetonate monohydrate, zinc naphthenate and zinc octylate; organic tin compounds such as dibutyltin diacetate complex; and the like.
- the catalyst (d) an inorganic acid and an organic metal compound are preferable, and an organic aluminum compound and hydrochloric acid are more preferable.
- the catalyst (d) is preferably 0.01 parts by mass or more, more preferably 0.05 parts by mass or more, and still more preferably 0 with respect to 100 parts by mass in total of the organosilicon compound (a) and the metal compound (b). 0.1 parts by mass or more, preferably 20 parts by mass or less, more preferably 10 parts by mass or less, and further preferably 8 parts by mass or less.
- composition of the present invention is an antioxidant, a rust inhibitor, a UV absorber, a light stabilizer, a fungicide, an antibacterial agent, a bioadhesion inhibitor, and a deodorant as long as the effects of the present invention are not impaired.
- Various additives such as pigments, flame retardants and antistatic agents may coexist.
- antioxidants examples include phenol-based antioxidants, sulfur-based antioxidants, phosphorus-based antioxidants, hindered amine-based antioxidants, and the like.
- phenolic antioxidant examples include n-octadecyl-3- (4-hydroxy-3,5-di-t-butylphenyl) propionate, 2,6-di-t-butyl-4-methylphenol, 2, 2-thio-diethylene-bis- [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], tri-ethylene glycol-bis- [3- (3-t-butyl-5-methyl -4-hydroxyphenyl) propionate], 3,9-bis [2- ⁇ 3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy ⁇ -1,1-dimethylethyl] -2, 4,8,10-tetraoxaspiro [5.5] undecane, tetrakis ⁇ 3- (3,5-di-tert-butyl-4-hydroxyphenyl) -propionic acid ⁇ pentaeryth Cyl ester, 2-t-butyl-6-
- sulfur-based antioxidant examples include 3,3′-thiodipropionic acid di-n-dodecyl ester, 3,3′-thiodipropionic acid di-n-tetradecyl ester, and 3,3′-thiodipropion.
- examples include acid di-n-octadecyl ester and tetrakis (3-dodecylthiopropionic acid) pentaerythritol ester.
- Examples of the phosphorus antioxidant include tris (2,4-di-t-butylphenyl) phosphite, bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-).
- t-butyl-4-methylphenyl) pentaerythritol diphosphite bis (2,4-di-cumylphenyl) pentaerythritol diphosphite, tetrakis (2,4-di-t-butylphenyl) -4,4'-biphenylene diphosphonite, bis -[2,4-di-t-butyl, (6-methyl) phenyl] ethyl phosphite and the like.
- hindered amine antioxidant examples include sebacic acid bis (2,2,6,6-tetramethyl-4-piperidyl) ester (melting point: 81 to 86 ° C.), 2,2,6,6-tetramethyl-4- Piperidyl methacrylate (melting point: 58 ° C.), poly [ ⁇ 6- (1,1,3,3-tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl ⁇ ⁇ (2,2,6, 6-tetramethyl-4-piperidyl) imino ⁇ -1,6-hexamethylene ⁇ (2,2,6,6-tetramethyl-4-piperidyl) imino ⁇ ] and the like.
- the rust inhibitor examples include alkanolamines such as triethanolamine; quaternary ammonium salts; alkanethiols; imidazoles such as imidazoline, imidazole, alkylimidazoline derivatives, benzimidazole, 2-mercaptobenzimidazole, and benzotriazole; metavanadic acid Sodium; bismuth citrate; phenol derivatives; aliphatic amines such as alkylamines and polyalkenylamines, aromatic amines, ethoxylated amines, cyanoalkylamines, cyclohexylamine benzoate, aliphatic diamines such as alkylenediamine, aromatic diamines, etc.
- alkanolamines such as triethanolamine
- quaternary ammonium salts such as imidazoline, imidazole, alkylimidazoline derivatives, benzimidazole, 2-mercaptobenzimidazole, and benzotri
- Examples of the ultraviolet absorber / light stabilizer include 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- [2-hydroxy-3,5-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl].
- Examples of the fungicide / antibacterial agent include 2- (4-thiazolyl) benzimidazole, sorbic acid, 1,2-benzisothiazolin-3-one, (2-pyridylthio-1-oxide) sodium, dehydroacetic acid, 2-methyl -5-chloro-4-isothiazolone complex, 2,4,5,6-tetrachlorophthalonitrile, methyl 2-benzimidazole carbamate, methyl 1- (butylcarbamoyl) -2-benzimidazole carbamate, mono or dibromocyano
- Examples include acetamides, 1,2-dibromo-2,4-dicyanobutane, 1,1-dibromo-1-nitropropanol and 1,1-dibromo-1-nitro-2-acetoxypropane.
- biological adhesion inhibitor examples include tetramethylthiuram disulfide, bis (N, N-dimethyldithiocarbamate) zinc, 3- (3,4-dichlorophenyl) -1,1-dimethylurea, dichloro-N-((dimethylamino ) Sulfonyl) fluoro-N- (P-tolyl) methanesulfenamide, pyridine-triphenylborane, N, N-dimethyl-N′-phenyl-N ′-(fluorodichloromethylthio) sulfamide, cuprous thiocyanate ( 1), cuprous oxide, tetrabutylthiuram disulfide, 2,4,5,6-tetrachloroisophthalonitrile, zinc ethylenebisdithiocarbamate, 2,3,5,6-tetrachloro-4- (methyl) Sulfonyl) pyridine, N- (2,4,6-trichloroph
- deodorizer examples include lactic acid, succinic acid, malic acid, citric acid, maleic acid, malonic acid, ethylenediaminepolyacetic acid, alkane-1,2-dicarboxylic acid, alkene-1,2-dicarboxylic acid, cycloalkane-1 , 2-dicarboxylic acid, cycloalkene-1,2-dicarboxylic acid, organic acids such as naphthalenesulfonic acid; fatty acid metals such as zinc undecylenate, zinc 2-ethylhexanoate, zinc ricinoleate; iron oxide, iron sulfate, Zinc oxide, zinc sulfate, zinc chloride, silver oxide, copper oxide, metal (iron, copper, etc.) chlorophyllin sodium, metal (iron, copper, cobalt etc.) phthalocyanine, metal (iron, copper, cobalt etc.) tetrasulfonic acid phthalocyanine, Metal compounds such as titanium dioxide, visible light responsive
- the pigment examples include carbon black, titanium oxide, phthalocyanine pigment, quinacridone pigment, isoindolinone pigment, perylene or perine pigment, quinophthalone pigment, diketopyrrolo-pyrrole pigment, dioxazine pigment, disazo condensation pigment, Examples include benzimidazolone pigments.
- flame retardant examples include decabromobiphenyl, antimony trioxide, phosphorus flame retardant, aluminum hydroxide and the like.
- antistatic agent examples include quaternary ammonium salt type cationic surfactants, betaine type amphoteric surfactants, alkyl phosphate type anionic surfactants, primary amine salts, secondary amine salts, thirds.
- Cationic surfactants such as quaternary amine salts, quaternary amine salts and pyridine derivatives, sulfated oils, soaps, sulfated ester oils, sulfated amide oils, sulfated ester salts of olefins, fatty alcohol sulfate esters, alkyl sulfates
- Anionic surfactants such as ester salts, fatty acid ethyl sulfonates, alkyl naphthalene sulfonates, alkyl benzene sulfonates, oxalate sulfonates and phosphate ester salts, partial fatty acid esters of polyhydric alcohols, fatty alcohol
- additives lubricants, fillers, plasticizers, nucleating agents, antiblocking agents, foaming agents, emulsifiers, brighteners, binders, and the like may coexist.
- the content of the additives is usually 0.1 to 70% by mass, preferably 0.1 to 50% by mass, more preferably 0.5 to 30% by mass, and still more preferably in the composition. Is 2 to 15% by mass.
- the hydrolyzable groups of the organosilicon compound (a) and the metal compound (b) are hydrolyzed and polycondensed to form a film.
- the formed film has a trialkylsilyl group derived from the organosilicon compound (a)
- the friction between the droplet (water droplet, oil droplet, etc.) and the film is reduced, and the droplet moves.
- the chemical and physical durability is high, and the heat resistance and light resistance are improved.
- the structural unit derived from the metal compound (b) having no trialkylsilyl group substantially functions as a spacer, so that the water repellency of the film becomes even better.
- Examples of the method for bringing the composition into contact with the substrate include a spin coating method, a dip coating method, a spray coating method, a roll coating method, a bar coating method, and a die coating method. preferable. According to the spin coating method and the spray coating method, it becomes easy to form a film having a predetermined thickness.
- the composition may be further diluted as necessary.
- the dilution rate is, for example, 2 to 100 times, preferably 5 to 50 times.
- the solvent illustrated as a solvent (c) can be used suitably.
- a film that is a cured product of the above composition is also included in the scope of the present invention.
- This film has a network-like skeleton in which silicon atoms or the above metal atoms (preferably only silicon atoms) are bonded via oxygen atoms.
- the skeleton is derived from the organosilicon compound (a).
- the structure (A) has a structure in which a trialkylsilyl group-containing molecular chain is bonded to a part of silicon atoms among the silicon atoms.
- the structure (A) derived from the organosilicon compound (a) is preferably represented by the following formula (IA).
- R a1 , Z, R s1 , Y, and n1 have the same meanings as described above.
- L x5 represents a chain or cyclic hydrocarbon and / or a chain or cyclic dialkylsiloxane.
- n10 represents an integer of 2 or more.
- X a6 independently represents a structure represented by the following formula.
- X a7 represents a hydrocarbon chain-containing group, a siloxane skeleton-containing group, a trialkylsilyl group-containing molecular chain, or an —O— group. * Represents a bond with L x5 . ]]
- hydrocarbon chain-containing group and the siloxane skeleton-containing group for X a7 include the same groups as the hydrocarbon chain-containing group and the siloxane skeleton-containing group for X a2 .
- X a7 is preferably a hydrocarbon chain-containing group, a siloxane skeleton-containing group or an —O— group, particularly preferably an —O— group.
- * -L x5- (X a6 ) n9 is preferably a group represented by the following formula.
- L x1 to L x2 , R x1 to R x7 , X a6 , n2, n3, and n4 are as defined above.
- n9 includes a structure represented by the following formula.
- n6 represents an integer of 2 to 10
- n7 represents an integer of 1 to 20
- n8 represents an integer of 1 to 20.
- Structure (A) includes, for example, a structure represented by the following formula.
- Me means a methyl group
- TMS means a trimethylsilyloxy group.
- (Y1) to (Y4) each represent a group represented by the following formula.
- the film which is a cured product of the composition of the present invention has a silicon atom (second silicon atom) derived from the metal compound (b) and different from the silicon atom to which the trialkylsilyl group-containing molecular chain is bonded.
- a second hydrocarbon chain-containing group, a hydroxy group, an alkoxy group, or a group condensed with a hydroxy group may be bonded.
- the second silicon atom may be replaced by another metal atom (for example, Al, Fe, In, Ge, Hf, Si, Ti, Sn, or Zr).
- These second silicon atoms and other metal atoms also act as spacers because hydrocarbon chain-containing groups, hydroxy groups, alkoxy groups, or hydroxy groups having fewer carbon atoms than trialkylsilyl group-containing molecular chains are bonded.
- the structure (B) derived from the metal compound (b) is preferably represented by the following formula.
- R b1 , M and m1 are as defined above.
- X b7 represents a hydrocarbon chain-containing group, a siloxane skeleton-containing group, a hydroxy group, or a —O— group.
- R b1 and X b7 are a siloxane skeleton-containing group or a hydrocarbon chain-containing group, R b1 and X b7 or different and be identical and, the R b1 and X b7 among multiple expressions (IB-1) may be the same or different.
- R b3 has the same meaning as described above.
- X b8 represents a hydrolyzable silane oligomer residue, and X b8 represents a hydrolyzable group, a fluorine-containing alkyl group having 1 to 4 carbon atoms, an alkyl group having 1 to 4 carbon atoms, or an —O— group. . ]
- Both the hydrocarbon chain-containing group and the siloxane skeleton-containing group in formula (IB-1) can be selected from the ranges described above.
- the hydrolyzable silane oligomer residue, hydrolyzable group, fluorine-containing alkyl group, and alkyl group in formula (IB-2) can be selected from the ranges exemplified for X b3 .
- structures represented by the following formulas (IB-I-1) to (IB-I-7) can be preferably exemplified.
- r represents an integer of 1 to 10 (particularly an integer of 1 to 3)
- q represents an integer of 1 to 20 (particularly an integer of 6 to 10).
- the film of the present invention containing these structures (A) and (B) has an initial contact angle of droplets on the film of A 1 and a light intensity of the mercury lamp having an emission line in a wavelength region of 300 nm or less.
- Change in contact angle when the contact angle of the droplet on the coating after irradiation for 4 hours in an air atmosphere of 20 ⁇ 10 mW / cm 2 at a temperature of 20-40 ° C. and a humidity of 30-75% is B Z1.
- the rate ((B Z1 -A 1 ) / A 1 ⁇ 100 (%)) preferably satisfies the relationship represented by the following formula.
- the film of the present invention has particularly good light resistance, and even when irradiated with high-intensity light, the water repellency is unlikely to deteriorate.
- the contact angle change rate ((B Z1 ⁇ A 1 ) / A 1 ⁇ 100 (%)) before and after the 4-hour irradiation is more preferably ⁇ 10% or more, further preferably ⁇ 7% or more, and particularly preferably ⁇ 5. % Or more, usually 0% or less, for example, ⁇ 0.5% or less is allowed.
- the coating of the present invention has a light intensity of 200 ⁇ 10 mW / cm 2 on the surface irradiated with a mercury lamp having a bright line in a wavelength region of 300 nm or less in an air atmosphere at a temperature of 20 to 40 ° C. and a humidity of 30 to 75%.
- the contact angle of the droplet on the film after irradiation for 6 hours is B Z2
- the contact angle change rate ((B Z2 ⁇ A 1 ) / A 1 ⁇ 100 (%) is expressed by the following formula. It is preferable to satisfy the relationship.
- the contact angle change rate before and after the 6-hour irradiation is more preferably ⁇ 20% or more, further preferably ⁇ 15% or more, particularly preferably ⁇ 10% or more, and 0% or less, further 0.5% or less. It is also permissible.
- the mercury lamp is preferably irradiated in an air atmosphere, the temperature is preferably 20 ° C. or higher and 40 ° C. or lower, and the humidity is preferably 40% or higher and 75% or lower.
- Examples of the mercury lamp used for the irradiation include “SP-9 250DB” manufactured by USHIO INC.
- the coating film of the present invention has a contact angle change rate ((B H ⁇ A 1 ) / A 1 ⁇ 100 (B) where the contact angle of the droplet on the film after heating at 200 ° C. for 100 hours is B H. %))
- a contact angle change rate ((B H ⁇ A 1 ) / A 1 ⁇ 100 (B) where the contact angle of the droplet on the film after heating at 200 ° C. for 100 hours is B H. %)
- B H. % satisfies the relationship represented by the following formula.
- the contact angle change rate before and after heating at 200 ° C. for 100 hours is more preferably ⁇ 10% or more, further preferably ⁇ 7% or more, and may be 0% or less, further 0.5% or less. Permissible.
- the hydrolyzable group is hydrolyzed by taking in moisture in the air by leaving the composition and the substrate in contact with each other in the air, and the siloxane skeleton is It is formed.
- it may be kept at 40 to 250 ° C.
- the film of the present invention thus obtained is superior in terms of weather resistance than the film obtained from conventional fluorine coating agents.
- the film obtained from the composition of the present invention has a molecular chain in which a trialkylsilyl group-containing molecular chain or an alkyl group in a trialkylsilyl group-containing molecular chain is replaced with a fluoroalkyl group.
- a trialkylsilyl group-containing molecular chain or an alkyl group in a trialkylsilyl group-containing molecular chain is replaced with a fluoroalkyl group.
- the film obtained from the composition of the present invention is usually formed on a substrate, and a film-treated substrate in which a film is formed on the substrate is also included in the scope of the present invention.
- the shape of the substrate may be either a flat surface or a curved surface, or may be a three-dimensional structure in which a large number of surfaces are combined.
- the substrate may be composed of any organic material or inorganic material.
- the organic material examples include acrylic resin, polycarbonate resin, polyester resin, styrene resin, acrylic-styrene copolymer resin, cellulose Thermoplastic resins such as resins, polyolefin resins, polyvinyl alcohol, etc .; thermosetting resins such as phenol resins, urea resins, melamine resins, epoxy resins, unsaturated polyesters, silicone resins, urethane resins; Are ceramics; glass; metals such as iron, silicon, copper, zinc, and aluminum; alloys containing the metals;
- the substrate may be subjected to a hydrophilic treatment.
- the hydrophilic treatment include hydrophilic treatment such as corona treatment, plasma treatment, and ultraviolet treatment.
- the layer formed from the composition for base layer formation (composition for primer layer formation) containing the component (P) which can form siloxane skeleton is preferable.
- the primer layer was formed from an underlayer-forming composition (primer layer-forming composition) containing a component (P1) composed of a compound represented by the following formula (III) and / or a partially hydrolyzed condensate thereof.
- a layer is preferred.
- Si (X p2 ) 4 (III) [However, in the formula (III), X p2 each independently represents a halogen atom, an alkoxy group or an isocyanate group. ]
- X p2 is preferably a chlorine atom, an alkoxy group having 1 to 4 carbon atoms or an isocyanate group, and the four X p2 are preferably the same.
- Si (NCO) 4 , Si (OCH 3 ) 4 , Si (OC 2 H 5 ) 4 and the like are preferably used as the compound represented by the general formula (III).
- compound (III) may be used alone or in combination of two or more.
- the component (P1) contained in the underlayer forming composition may be a partial hydrolysis condensate of compound (III).
- the partial hydrolysis-condensation product of compound (III) can be obtained by applying a general hydrolysis-condensation method using an acid or a base catalyst.
- the degree of condensation (degree of multimerization) of the partially hydrolyzed condensate needs to be such that the product is dissolved in the solvent.
- Component (P1) may be compound (III) or a partial hydrolysis condensate of compound (III), and a mixture of compound (III) and its partial hydrolysis condensate, for example, It may be a partially hydrolyzed condensate of compound (III) containing compound (III) of the reaction.
- a commercial item as a compound shown with general formula (III), and its partial hydrolysis-condensation product, It is possible to use such a commercial item for this invention.
- the underlayer-forming composition (primer layer-forming composition) comprises the component (P1), the compound represented by the following formula (IV), and / or a partially hydrolyzed condensate thereof (P2) component. Or a partially hydrolyzed cocondensate of the component (P1) and the component (P2) (however, the component (P1) and / or the compound (IV) may be included). May be.
- X p3 independently represents a hydrolyzable group or a hydroxyl group, and p is an integer of 1 to 8. ]
- Compound (IV) is a compound having a hydrolyzable silyl group or silanol group at both ends with a divalent organic group (preferably an aliphatic hydrocarbon group, particularly an alkylene group) interposed therebetween.
- a divalent organic group preferably an aliphatic hydrocarbon group, particularly an alkylene group
- the hydrolyzable group represented by X p3, include the same groups or atoms as the X p2.
- X p3 is preferably an alkoxy group or an isocyanate group, and particularly preferably an alkoxy group.
- the alkoxy group an alkoxy group having 1 to 4 carbon atoms is preferable, and a methoxy group or an ethoxy group is more preferable. These are appropriately selected and used according to the purpose of manufacture, application and the like.
- a plurality of X p3 present in the compound (IV) may be the same group or different groups, and are preferably the same group from the viewpoint of easy availability.
- compound (IV) specifically, (CH 3 O) 3 SiCH 2 CH 2 Si (OCH 3 ) 3 , (OCN) 3 SiCH 2 CH 2 Si (NCO) 3 , Cl 3 SiCH 2 CH 2 SiCl 3 include (C 2 H 5 O) 3 SiCH 2 CH 2 Si (OC 2 H 5) 3, (CH 3 O) 3 SiCH 2 CH 2 CH 2 CH 2 CH 2 Si (OCH 3) 3 , etc. .
- compound (IV) may be used alone or in combination of two or more.
- the component contained in the underlayer forming composition may be a partially hydrolyzed condensate of compound (IV).
- the partially hydrolyzed condensate of compound (IV) can be obtained by the same method as described in the production of the partially hydrolyzed condensate of compound (III).
- the degree of condensation (degree of multimerization) of the partially hydrolyzed condensate must be such that the product is dissolved in the solvent.
- Component (P) may be compound (IV) or a partial hydrolysis condensate of compound (III), and a mixture of compound (IV) and its partial hydrolysis condensate, for example, It may be a partially hydrolyzed condensate of compound (IV) containing compound (IV) of the reaction.
- the underlayer-forming composition usually takes into account the economics, workability, ease of control of the thickness of the resulting primer layer, etc., in addition to the solid content that constitutes the layer component And an organic solvent.
- the organic solvent is not particularly limited as long as it dissolves the solid content contained in the underlayer forming composition (primer layer forming composition).
- an organic solvent the same compound as the composition for water-repellent film formation is mentioned.
- the organic solvent is not limited to one kind, and two or more kinds of solvents having different polarities and evaporation rates may be mixed and used.
- the composition for base layer formation contains a partial hydrolysis-condensation product and a partial hydrolysis-condensation product, it may contain the solvent used in order to manufacture these.
- the underlayer-forming composition may contain water for the above-mentioned components to undergo a hydrolysis condensation reaction or a hydrolysis cocondensation reaction.
- an underlayer-forming composition (primer layer-forming composition) is applied to the surface of the substrate by methods such as brush coating, flow coating, spin coating, dip coating, squeegee coating, spray coating, and hand coating.
- the base layer can be formed by curing after drying as necessary in a medium or nitrogen atmosphere. Curing conditions are appropriately controlled depending on the type and concentration of the composition used.
- composition for base layer formation composition for primer layer formation
- composition for water-repellent film formation composition for water-repellent film formation
- the thickness of the primer layer is not particularly limited as long as it can impart moisture resistance, adhesion, and barrier properties such as alkali from the substrate to the water repellent film formed thereon.
- the film obtained from the composition of the present invention can achieve both water repellency, heat resistance and light resistance (weather resistance), and is free from white turbidity and smear after film formation, and does not require a wiping process. Therefore, it is useful as a base material in display devices such as a touch panel display, optical elements, semiconductor elements, building materials, automobile parts, nanoimprint technology, and the like. Furthermore, it is suitably used as an article such as a body, window glass (front glass, side glass, rear glass), mirror, bumper, etc. in transportation equipment such as trains, automobiles, ships, and airplanes. Moreover, it can also be used for outdoor uses, such as a building outer wall, a tent, a solar power generation module, a sound insulation board, and concrete.
- It can also be used for fishing nets, insect nets, water tanks, and the like. Furthermore, it can be used for various indoor facilities such as kitchens, bathrooms, washstands, mirrors, toilet articles, ceramics such as chandeliers and tiles, artificial marble, and air conditioners. It can also be used as an antifouling treatment for jigs, inner walls, pipes and the like in factories. It is also suitable for goggles, glasses, helmets, slingshots, textiles, umbrellas, play equipment, soccer balls and the like. Furthermore, it can also be used as an anti-adhesive agent for various packaging materials such as food packaging materials, cosmetic packaging materials, and the inside of pots.
- a uniform light irradiation unit (USHIO Inc.) was attached to a mercury lamp (SP-9 250DB, manufactured by USHIO INC.), And a sample was installed at a distance of 17.5 cm from the lens.
- the light intensity of 200-800 nm was measured with an intensity meter (VEGA, manufactured by OPHIL), and it was 200 mW / cm 2 .
- the sample was irradiated with a mercury lamp for 4 hours or 6 hours in an air atmosphere at a temperature of 20 to 40 ° C. and a humidity of 30 to 75%.
- the change rate of the contact angle before and after irradiation was calculated based on the following formula, where A 1 was the initial contact angle on the transparent coating and B Z was the contact angle of the droplet after irradiation.
- Contact angle change rate (%) ⁇ (B Z ⁇ A 1 ) / A 1 ⁇ ⁇ 100 (%)
- the spectral irradiance of the mercury lamp (“SP-9 250DB” manufactured by USHIO INC.) Is as shown in FIG. 1, and has a bright line in a wavelength region of 300 nm or less.
- a three-necked flask was charged with 1.56 g of silanol compound (1) and 7.00 g of THF and stirred. After cooling to ⁇ 40 ° C., 3.13 mL of n-BuLi hexane solution (1.6 mol / L) was added dropwise. The temperature was raised to 0 ° C., 8.90 g of hexamethylcyclotrisiloxane dissolved in 7.00 g of THF was added dropwise, and the mixture was stirred for 17 hours. After cooling to ⁇ 40 ° C., 0.60 g of chlorodimethylvinylsilane was added dropwise.
- a four-necked flask was charged with 5.77 g of 1,3,5,7-tetramethylcyclotetrasiloxane and cooled on ice.
- a mixture of the intermediate (1) and 5 ⁇ L of platinum (0) -1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution was added dropwise. Stir for 15 minutes and concentrate at 2 hPa, 30 ° C. Cooled at ⁇ 40 ° C. and dropped with 9.24 g of vinyltrimethoxysilane mixed with 142 ⁇ L of platinum (0) -1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution at room temperature. The mixture was stirred for 2 hours.
- Example 1 6.4 ⁇ 10 ⁇ 5 mol of compound (1), 1.0 ⁇ 10 ⁇ 3 mol of TEOS (tetraethoxysilane), and 2.8 mL of 0.01M hydrochloric acid aqueous solution are added to 5.0 mL of methyl ethyl ketone and stirred for 24 hours. A sample solution was prepared. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (1).
- TEOS tetraethoxysilane
- Example 2 Add 6.3 ⁇ 10 ⁇ 5 mol of compound (2), 1.0 ⁇ 10 ⁇ 3 mol of TEOS, and 1.4 mL of 0.01M hydrochloric acid aqueous solution to 5.4 mL of methyl ethyl ketone, and stir for 24 hours to prepare a sample solution. did. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (2).
- Example 3 Add 9.7 ⁇ 10 ⁇ 5 mol of compound (3), 2.0 ⁇ 10 ⁇ 3 mol of TEOS, and 4.0 mL of 0.01M hydrochloric acid aqueous solution to 8.5 mL of methyl ethyl ketone, and stir for 24 hours to prepare a sample solution. did. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (3).
- Example 4 Add 6.3 ⁇ 10 ⁇ 5 mol of compound (4), 1.0 ⁇ 10 ⁇ 3 mol of TEOS, and 2.4 mL of 0.01M hydrochloric acid aqueous solution to 7.2 mL of methyl ethyl ketone, and stir for 24 hours to prepare a sample solution. did. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (4).
- Example 5 Add 8.6 ⁇ 10 ⁇ 5 mol of compound (1), 1.0 ⁇ 10 ⁇ 3 mol of TEOS, and 1.9 mL of 0.01M hydrochloric acid aqueous solution to 5.9 mL of methyl ethyl ketone, and stir for 24 hours to prepare a sample solution. did. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (5).
- Example 6 Add 6.3 ⁇ 10 ⁇ 5 mol of compound (2), 6.3 ⁇ 10 ⁇ 4 mol of TEOS, and 1.4 mL of 0.01M hydrochloric acid aqueous solution to 5.4 mL of methyl ethyl ketone, and stir for 24 hours to prepare a sample solution. did. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (6).
- Example 7 Add 6.3 ⁇ 10 ⁇ 5 mol of compound (2), 1.9 ⁇ 10 ⁇ 3 mol of TEOS, and 3.7 mL of 0.01M hydrochloric acid aqueous solution to 8.7 mL of methyl ethyl ketone, and stir for 24 hours to prepare a sample solution. did. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (7).
- Example 8> Add 9.7 ⁇ 10 ⁇ 5 mol of compound (3), 9.6 ⁇ 10 ⁇ 4 mol of TEOS, and 2.2 mL of 0.01M hydrochloric acid aqueous solution to 6.1 mL of methyl ethyl ketone, and stir for 24 hours to prepare a sample solution. did. The sample solution was diluted 20 times with methyl ethyl ketone to obtain a coating solution (8).
- Coating solutions (1) to (8) were coated on an alkali-cleaned glass substrate (EAGLE XG, Corning) with a spin coater (manufactured by MIKASA) at 3000 rpm for 20 s and cured at a predetermined temperature. In addition, the wiping process was not performed about any sample. For the prepared samples, the initial contact angle was measured and the light resistance was evaluated.
- EAGLE XG alkali-cleaned glass substrate
- MIKASA spin coater
- Table 5 shows the results of the light resistance test for the films obtained in Examples 1 to 8 and Comparative Examples 1 and 2.
- Table 6 shows the results of the heat resistance test for the films obtained in Examples 1 to 8 and Comparative Examples 1 and 2.
- the samples of Examples 1 to 8 and Comparative Example 1 had a transparent evaluation of “ ⁇ ” because a transparent film free from foreign matters and cloudiness was obtained.
- Comparative Example 2 since the foreign matter was present in the surface and there was a cloudy portion considered to be partially due to the film thickness unevenness, the visual evaluation was “ ⁇ ”.
- the comparative example 2 although the sample after a light resistance test and a heat resistance test had a small fall of an average contact angle compared with the comparative example 1, the contact angle of the periphery of the foreign material and spot which existed on the surface was small. The variation was large.
- the film obtained from the composition of the present invention can achieve both water repellency, heat resistance and light resistance (weather resistance), and is free from white turbidity and smear after film formation, and does not require a wiping process. Therefore, it is useful as a base material in display devices such as a touch panel display, optical elements, semiconductor elements, building materials, automobile parts, nanoimprint technology, and the like. Furthermore, it is suitably used as an article such as a body, window glass (front glass, side glass, rear glass), mirror, bumper, etc. in transportation equipment such as trains, automobiles, ships, and airplanes. Moreover, it can also be used for outdoor uses, such as a building outer wall, a tent, a solar power generation module, a sound insulation board, concrete.
- It can also be used for fishing nets, insect nets, water tanks, and the like. Furthermore, it can be used for various indoor facilities such as kitchens, bathrooms, washstands, mirrors, toilet articles, ceramics such as chandeliers and tiles, artificial marble, and air conditioners. It can also be used as an antifouling treatment for jigs, inner walls, pipes and the like in factories. It is also suitable for goggles, glasses, helmets, slingshots, textiles, umbrellas, play equipment, soccer balls and the like. Furthermore, it can also be used as an anti-adhesive agent for various packaging materials such as food packaging materials, cosmetic packaging materials, and the inside of pots.
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Abstract
Description
すなわち本発明に係る組成物は、トリアルキルシリル基を少なくとも1つと、加水分解性ケイ素基を2つ以上有する有機ケイ素化合物(a)、及び金属原子に加水分解性基が少なくとも1つ結合している金属化合物(b)を含むことを特徴とする。
前記有機ケイ素化合物(a)は、式(Ia)で表される化合物であることが好ましい。
前記組成物は、さらに溶剤(c)を含むことが好ましい。
また、組成物の硬化物である皮膜も本発明の技術的範囲に包含される。
式(X-3)中、(Si(Rx4)(-Lx2-Si(Xa2)(Xa1)2)-O-)、(Si(Rx5)(Rx6)-O-)で表される単位の順序は任意である。]]
ここで、加水分解性ケイ素基は、加水分解によりシラノール基(Si(OH)基)を形成しうる基(以下、「加水分解性基」ということがある)がケイ素原子に結合した基を意味し、少なくとも1つ(好ましくは2つ以上、より好ましくは3つ)の加水分解性基が、1つのケイ素原子に結合している基が好ましい。
前記トリアルキルシリルオキシ基に含まれるアルキル基としては、メチル基、エチル基、プロピル基、ブチル基等が挙げられる。また、Ra1が全てアルキル基である場合の(Ra1)3Si-基又はトリアルキルシリルオキシ基において、3つのアルキル基は、互いに同一でも異なっていてもよく、同一であることが好ましい。さらに、Ra1が全てアルキル基である場合の(Ra1)3Si-基又はトリアルキルシリルオキシ基には、メチル基が好ましくは1つ以上、より好ましくは2つ以上、特に好ましくは3つのアルキル基が含まれる。
アルキル基がフルオロアルキル基に置き換わっている場合、その置換数は、ケイ素原子1つあたり1~3の範囲で適宜選択できる。
Rx1~Rx7は、それぞれ、水素原子又は炭素数1~10の炭化水素基を表す。
Xa1は、それぞれ独立に、加水分解性基又はトリアルコキシシリルオキシ基を表す。
Xa2は、それぞれ独立に、加水分解性基、トリアルコキシシリルオキシ基、炭化水素鎖含有基、シロキサン骨格含有基又はトリアルキルシリル基含有分子鎖を表し、Xa2が加水分解性基又はトリアルコキシシリルオキシ基の場合、Xa2とXa1とは、同一であっても異なっていてもよい。
n2は、2以上20以下の整数を表す。
n3は、2以上5以下の整数を表す。
n4は、0以上5以下の整数を表す。
式(X-3)中、(Si(Rx4)(-Lx2-Si(Xa2)(Xa1)2)-O-)及び(Si(Rx5)(Rx6)-O-)で表される単位の順序は任意である。]
以下、特に断りがない限り、酸素非置換型の炭化水素鎖含有基(すなわち1価の炭化水素基)を例にとって炭化水素鎖含有基について説明するが、いずれの説明でも、そのメチレン基(-CH2-)のうち一部を酸素原子に置き換えることが可能である。
シロキサン骨格含有基は、シロキサン骨格の一部に2価の炭化水素基を含んでいてもよい。具体的には、シロキサン骨格の一部の酸素原子が2価の炭化水素基で置き換わっていてもよい。シロキサン骨格の一部の酸素原子を置き換えていてもよい2価の炭化水素基としては、トリアルキルシリル基含有分子鎖に含まれるジアルキルシロキサン鎖の酸素原子を置き換えていてもよい2価の炭化水素基と同様の基を好ましく挙げることができる。
また、Rx8は、炭化水素基であることが好ましい。Rx8の炭化水素基に含まれるメチレン基は、酸素原子に置き換わっている場合もある。
またXa2としては、加水分解性基又はトリアルコキシシリルオキシ基が好ましく、アルコキシ基又はトリアルコキシシリルオキシ基が好ましい。
n3は、2以上4以下の整数であることが好ましい。
n4は、0以上4以下の整数であることが好ましい。
Lx1、Lx2、Ra1、Rs1、Rx3、Rx4、Rx5、Rx6、Xa1、Xa2、Y、n1、n3、n4は上記と同義である。
Rs3は、炭素数1~4のアルキル基を表す。
Ry1、Rx10は、それぞれ独立に、炭素数2~10のアルケニル基を表す。
Xx1は、ハロゲン原子を表す。
n9は、1~3の整数を表す。
n14は、1以上3以下の整数を表す。
Rは、アルキル基を表し、M1はアルカリ金属を表す。]
Ry1、Rx10のアルケニル基の炭素数は、好ましくは2~5、より好ましくは2~3、特に好ましくは2である。Ry1、Rx10のアルケニル基としては、ビニル基、プロペニル基、ブテニル基、ペンテニル基等が挙げられる。
前記Xx1のハロゲン原子としては、フッ素原子、塩素原子、臭素原子、ヨウ素原子等が挙げられ、塩素原子が好ましい。
前記金属化合物(b)は、式(Ib-1)又は式(Ib-2)で表される化合物であることが好ましく、式(Ib-1)で表される化合物であることがより好ましい。
Rb1、Xb2のシロキサン骨格含有基としては、Xa2のシロキサン骨格含有基と同様の基が挙げられる。
また、Rb1、Xb2の炭化水素鎖含有基としては、Xa2の炭化水素鎖含有基と同様の基が挙げられる。
Rf1はそれぞれ独立して、フッ素原子又は1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表す。
Rb4はそれぞれ独立して、水素原子又は炭素数1~4のアルキル基を表す。
Lf1はそれぞれ独立して、-O-、-COO-、-OCO-、-NRf2-、-NRf2CO-又は-CONRf2-を表す(Rf2は水素原子又は低級のアルキル基又は低級の含フッ素アルキル基)。
h1~h5はそれぞれ独立して0以上100以下の整数であり、h1~h5の合計値は100以下である。
h1~h5を付して括弧でくくられた各繰り返し単位の順序は式中において任意である。
*はMとの結合手を表す。]
(フルオロアルコキシ)アルキル基としては、例えば(フルオロメトキシ)C5-20アルキル基、(フルオロエトキシ)C5-20アルキル基、(フルオロプロポキシ)C5-20アルキル基、(フルオロブトキシ)C5-20アルキル基などが挙げられる。
(フルオロアルキルシリル)アルキル基としては、例えば(フルオロメチルシリル)C5-20アルキル基、(フルオロエチルシリル)C5-20アルキル基、(フルオロプロピルシリル)C5-20アルキル基、(フルオロブチルシリル)C5-20アルキル基、(フルオロペンチルシリル)C5-20アルキル基、(フルオロヘキシルシリル)C5-20アルキル基、(フルオロへプチルシリル)C5-20アルキル基、(フルオロオクチルシリル)C5-20アルキル基などが挙げられる。
(フルオロアルキルカルボニルオキシ)アルキル基としては、(フルオロメチルカルボニルオキシ)C5-20アルキル基、(フルオロエチルカルボニルオキシ)C5-20アルキル基、(フルオロプロピルカルボニルオキシ)C5-20アルキル基、(フルオロブチルカルボニルオキシ)C5-20アルキル基などが挙げられる。
(フルオロアルキル)アリール基としては、(C1-8フルオロアルキル)フェニル基、(C1-8フルオロアルキル)ナフチル基が挙げられ、(フルオロアルキル)アルケニル基としては、(C1-17フルオロアルキル)ビニル基が挙げられ、(フルオロアルキル)アルキニル基としては、(C1-17フルオロアルキル)エチニル基が挙げられる。
また、Xb2は、シロキサン骨格含有基又は加水分解性基であることが好ましく、加水分解性基であることがより好ましい。
また、前記オリゴマー残基がアルコキシ基を有する場合、該アルコキシ基としては、メトキシ基、エトキシ基、プロポキシ基、ブトキシ基等が挙げられ、好ましくはメトキシ基、エトキシ基等である。前記オリゴマー残基は、これらアルコキシ基の1種又は2種以上を有することができ、好ましくは1種を有する。
h6は0以上100以下の整数である。
*はSiとの結合手を表す。]
Xとしては、加水分解性基又は炭素数1~4の含フッ素アルキル基が好ましい。
Xb3としては、加水分解性基、炭素数1~4の含フッ素アルキル基又はO-基が好ましい。
更に、CF3(CF2)p-(CH2)qSiCH3Cl2、CF3(CF2)p-(CH2)qSiCH3(OCH3)2、CF3(CF2)p-(CH2)qSiCH3(OC2H5)2が挙げられる(pはいずれも2~10であり、好ましくは3~7でありqはいずれも1~5であり、好ましくは2~4である)。
Y1は、酸素原子又は炭素数1~10の2価の炭化水素基を表す。
Z1は、単結合又は-Ls2-Si(Rs5)2-を表す。
Ra3は、それぞれ独立に、炭化水素基又はトリアルキルシリルオキシ基を表す。ただし、Ra3の全てが炭化水素基の場合、Ra3で表される炭化水素基はアルキル基である。
Rs4、Rs5は、それぞれ独立に、炭素数1~10の炭化水素基を表す。
Ls2は、炭素数1~10の2価の炭化水素基を表す。
Xa3は、それぞれ独立に、加水分解性基又はトリアルコキシシリルオキシ基を表す。
Xa4は、それぞれ独立に、トリアルキルシリル基含有分子鎖、炭化水素鎖含有基、シロキサン骨格含有基、加水分解性基又はトリアルコキシシリルオキシ基を表し、Xa4が加水分解性基の場合、Xa4とXa3とは、同一であっても異なっていてもよい。
n11は、1以上100以下の整数を表す。]
Z1としては、単結合が好ましい。
Ra3としては、Ra1として例示した基と同様の基が挙げられ、アルキル基又はトリアルキルシリルオキシ基が好ましく、トリアルキルシリル基がより好ましい。
Rs4、Rs5のアルキル基としては、Rs1、Rs2として例示した基と同様の基が挙げられる。(-Si(Rs4)2-O-)n11で表されるジアルキルシロキサン鎖としては、(ポリ)ジメチルシロキサン鎖、(ポリ)ジエチルシロキサン鎖等が挙げられる。
n11は、1以上であり、好ましくは100以下、より好ましくは80以下、さらに好ましくは50以下、特に好ましくは20以下、最も好ましくは15以下である。
前記アルコール系溶剤としては、メタノール、エタノール、プロパノール、イソプロピルアルコール、ブタノール、エチレングリコール、プロピレングリコール、ジエチレングリコール等が挙げられ、前記エーテル系溶剤としては、ジメトキシエタン、テトラヒドロフラン、ジオキサン等が挙げられ、ケトン系溶剤としては、アセトン、メチルエチルケトン等が挙げられ、エステル系溶剤としては、酢酸エチル、酢酸ブチル等が挙げられ、アミド系溶剤としては、ジメチルホルムアミド等が挙げられ、芳香族炭化水素系溶剤としては、ベンゼン、トルエン、キシレン等が挙げられ、飽和炭化水素系溶剤としては、ヘキサン、シクロヘキサン等が挙げられる。
中でも、アルコール系溶剤、ケトン系溶剤が好ましく、水を含んでいてもよい。
水を含む場合、溶剤(c)中、水の含有率は、好ましくは0.1質量%以上、より好ましくは5質量%以上、さらに好ましくは10質量%以上であり、好ましくは90質量%以下、より好ましくは70質量%以下、さらに好ましくは50質量%以下である。
中でも、触媒(d)としては、無機酸及び有機金属化合物が好ましく、有機アルミニウム化合物及び塩酸がより好ましい。
Lx5は、鎖状或いは環状の炭化水素及び/又は鎖状或いは環状のジアルキルシロキサンを表す。
n10は、2以上の整数を表す。
Xa6は、それぞれ独立に、下記式で表される構造を表す。
また、式(IB-2)における加水分解性シランオリゴマー残基、加水分解性基、含フッ素アルキル基、アルキル基は、Xb3について例示した範囲から選択できる。
(BZ1-A1)/A1×100(%)≧-9(%)
本発明の皮膜は、特に耐光性が良好であり、高強度の光を照射した場合でも、撥水特性が低下しにくい。前記4時間照射前後の接触角度変化率((BZ1-A1)/A1×100(%))は、より好ましくは-10%以上、さらに好ましくは-7%以上、特に好ましくは-5%以上であり、通常0%以下であり、例えば-0.5%以下であることも許容される。
(BZ2-A1)/A1×100(%)≧-34(%)
前記6時間照射前後の接触角変化率は、より好ましくは-20%以上、さらに好ましくは-15%以上、特に好ましくは-10%以上であり、また0%以下、さらには0.5%以下であることも許容される。
上記照射に用いられる水銀ランプとしては、ウシオ電機社製「SP-9 250DB」が挙げられる。
(BH-A1)/A1×100(%)≧-20(%)
前記200℃で100時間加熱した前後の接触角変化率は、より好ましくは-10%以上、さらに好ましくは-7%以上であり、また0%以下、さらには0.5%以下であることも許容される。
このようにして得られた本発明の皮膜は、従来のフッ素コート剤から得られる皮膜よりも耐候性の点で優れる。
前記基材には、親水化処理を施しておいてもよい。親水化処理としては、コロナ処理、プラズマ処理、紫外線処理等の親水化処理が挙げられる。また、樹脂、シランカップリング剤、テトラアルコキシシラン等によるプライマー処理を施してもよい。
Si(Xp2)4 …(III)
[ただし、式(III)中、Xp2はそれぞれ独立して、ハロゲン原子、アルコキシ基又はイソシアネート基を示す。]
(Xp3)3Si-(CH2)p-Si(Xp3)3 …(IV)
[ただし、式(IV)中、Xp3はそれぞれ独立して加水分解性基又は水酸基を示し、pは1~8の整数である。]
一般式(IV)で示される化合物やその部分加水分解縮合物としては市販品があり、本発明にはこのような市販品を用いることが可能である。
また、下地層には、化合物(III)と同様のケイ素を主成分とする酸化膜を得ることができる、各種ポリシラザンを用いてもよい。
下地層形成用組成物(プライマー層形成用組成物)は、部分加水分解縮合物や部分加水分解共縮合物を含有する場合、これらを製造するために使用した溶媒を含んでもよい。
下地層形成用組成物(プライマー層形成用組成物)は、上記含有成分が加水分解縮合反応や加水分解共縮合反応するための水を含んでいてもよい。
プライマー層の厚さは、その上に形成される撥水膜に耐湿性、密着性、基体からのアルカリ等のバリア性を付与できる厚さであれば特に限定されない。
協和界面化学社製「DM700」を使用し、液量を3μLとして、θ/2法にて皮膜表面の水に対する接触角を測定した。
水銀ランプ(SP-9 250DB, ウシオ電機社製)に均一光照射ユニット(ウシオ社製)を取り付け、レンズから17.5cmの距離にサンプルを設置した。200-800nmの光強度を強度計(VEGA, OPHIL社製)で測定したところ、200mW/cm2であった。温度20~40℃、湿度30~75%の大気雰囲気下で、水銀ランプをサンプルに4時間又は6時間照射した。透明被膜上の初期接触角をA1、照射後の液滴の接触角をBZとして、下記式に基づいて、照射前後の接触角の変化率を計算した。
接触角変化率(%)={(BZ-A1)/A1}×100(%)
また、上記水銀ランプ(ウシオ電機社製「SP-9 250DB」)の分光放射照度は図1に示す通りであり、波長300nm以下の領域に輝線を有していた。
得られた透明皮膜を温度200℃で100時間静置し、耐熱試験を行った。
得られた皮膜の表面の異物、白濁の有無を目視で評価した。
○:異物及び白濁がない
×:異物また白濁がある
コンデンサーを装着した三ツ口フラスコに、トリクロロイソシアヌル酸3.94gを仕込み、窒素置換を実施した。セプタムよりジクロロメタン50mLを仕込み、撹拌、トリス(トリメチルシロキシ)シラン5.0gを加えた。1時間撹拌した後、ろ過した。濾液をジエチルエーテル150mL、イオン交換水50mL、トリエチルアミン1.87gを仕込んだ氷バスで冷却しながら、濾液を滴下した。室温で1時間撹拌した。イオン交換水で洗浄し、硫酸マグネシウムで脱水して、150mmHg、25℃で濃縮し、下記式で表される目的のシラノール化合物(1)を5.8g得た。
得られた化合物(1)の1H-NMR(400MHz,基準:CHCl3 (=7.24ppm))の測定結果を以下に示す。
合成例1と同様にして、中間体(1)を得た。
四つ口フラスコにテトラキス(ジメチルシリルオキシ)シラン7.89gを仕込み、氷冷した。前記中間体(1)に白金(0)-1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン錯体溶液5μLを混合したものを滴下した。15分間撹拌し、2hPa、30℃で濃縮した。-40℃で冷却し、ビニルトリメトキシシラン9.24gに白金(0)-1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン錯体溶液142μLを混合したものを滴下し、常温に戻して2時間撹拌した。2hPa、40℃で濃縮し、下記式で表される化合物(2)を得た。
得られた化合物(2)の1H-NMR(400MHz,基準:CDCl3(=7.24ppm))の測定結果を以下に示す。
ヘキサメチルシクロトリシロキサン量を3.34gにしたこと以外は合成例1と同様の手順で、中間体(2)を得た。得られた中間体(2)に対して、合成例2と同様の手順で処理を行い、化合物(3)を得た。
得られた化合物(3)の1H-NMR(400MHz,基準:CDCl3(=7.24ppm))の測定結果を以下に示す。
シラノール化合物(1)を1.56g用いる代わりにトリメチルシラノール0.66gを使用したこと以外は合成例1と同様の手順で、中間体(3)を得た。得られた中間体(3)に対して、合成例1と同様の手順で処理を行い、化合物(4)を得た。
得られた化合物(4)の1H-NMR(400MHz,基準:CDCl3(=7.24ppm))の測定結果を以下に示す。
化合物(1)を6.4×10-5モル、TEOS(テトラエトキシシラン)を1.0×10-3モル、0.01M塩酸水溶液2.8mLをメチルエチルケトン5.0mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(1)とした。
化合物(2)を6.3×10-5モル、TEOSを1.0×10-3モル、0.01M塩酸水溶液1.4mLをメチルエチルケトン5.4mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(2)とした。
化合物(3)を9.7×10-5モル、TEOSを2.0×10-3モル、0.01M塩酸水溶液4.0mLをメチルエチルケトン8.5mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(3)とした。
化合物(4)を6.3×10-5モル、TEOSを1.0×10-3モル、0.01M塩酸水溶液2.4mLをメチルエチルケトン7.2mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(4)とした。
化合物(1)を8.6×10-5モル、TEOSを1.0×10-3モル、0.01M塩酸水溶液1.9mLをメチルエチルケトン5.9mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(5)とした。
化合物(2)を6.3×10-5モル、TEOSを6.3×10-4モル、0.01M塩酸水溶液1.4mLをメチルエチルケトン5.4mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(6)とした。
化合物(2)を6.3×10-5モル、TEOSを1.9×10-3モル、0.01M塩酸水溶液3.7mLをメチルエチルケトン8.7mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(7)とした。
化合物(3)を9.7×10-5モル、TEOSを9.6×10-4モル、0.01M塩酸水溶液2.2mLをメチルエチルケトン6.1mLに加え、24時間撹拌して試料溶液を作製した。
試料溶液をメチルエチルケトンで20倍希釈し、塗布溶液(8)とした。
作製したサンプルについて、それぞれ初期の接触角を測定するとともに、耐光性を評価した。
オプツールDSX-E(ダイキン社製)0.2gとNovec7200(3M社製)39.8gを室温で撹拌して、比較塗布液(1)を得た。実施例と同様の方法で製膜し、評価を行った。
化合物(4)0.5g、酢酸ブチル0.57g及びオクタン3.24gを5分間撹拌したものに、10%硝酸水溶液0.22gを添加し3時間撹拌して、比較塗布液(2)を得た。実施例と同様の方法で製膜し、評価を行った。
Claims (8)
- トリアルキルシリル基を少なくとも1つと、加水分解性ケイ素基を2つ以上有する有機ケイ素化合物(a)、及び金属原子に加水分解性基が少なくとも1つ結合している金属化合物(b)を含む組成物。
- 前記有機ケイ素化合物(a)が、式(Ia)で表される化合物である請求項1に記載の組成物。
Yは、単結合又は*-Si(Rs2)2-Ls1-を表す。*は酸素原子との結合手を表す。
Zは、酸素原子又は炭素数1~10の2価の炭化水素基を表す。
Ra1は、それぞれ独立に、炭化水素基又はトリアルキルシリルオキシ基を表す。ただし、Ra1の全てが炭化水素基の場合、Ra1で表される炭化水素基はアルキル基である。
Rs1、Rs2は、それぞれ独立に、炭素数1~10のアルキル基を表す。
Ls1は、炭素数1~10の2価の炭化水素基を表す。
Xは、加水分解性ケイ素基を2個以上有する加水分解性ケイ素含有基を表す。
n1は、1以上150以下の整数を表す。] - 前記加水分解性ケイ素含有基が式(X-1)~(X-3)のいずれかで表される請求項1又は2に記載の組成物。
Lx1~Lx2は、それぞれ、炭素数1~20の2価の炭化水素基を表し、該2価の炭化水素基に含まれるメチレン基(-CH2-)は、-O-又は-O-Si(Rx7)2-に置き換わっていてもよい。
Rx1~Rx7は、それぞれ、水素原子又は炭素数1~10の炭化水素基を表す。
Xa1は、それぞれ独立に、加水分解性基又はトリアルコキシシリルオキシ基を表す。
Xa2は、それぞれ独立に、トリアルキルシリル含有基、炭化水素鎖含有基、シロキサン骨格含有基、加水分解性基又はトリアルコキシシリルオキシ基を表し、Xa2が加水分解性基の場合、Xa2とXa1とは、同一であっても異なっていてもよい。
n2は、1以上50以下の整数を表す。
n3は、2以上5以下の整数を表す。
n4は、0以上5以下の整数を表す。
式(X-3)中、(Si(Rx4)(-Lx2-Si(Xa2)(Xa1)2)-O-)及び(Si(Rx5)(Rx6)-O-)で表される単位の順序は任意である。] - 前記金属化合物(b)と前記有機ケイ素化合物(a)の比率(金属化合物(b)/有機ケイ素化合物(a))が、モル基準で0.1以上、100以下である請求項1~3のいずれかに記載の組成物。
- さらに溶剤(c)を含む請求項1~4のいずれかに記載の組成物。
- 請求項1~5のいずれかに記載の組成物の硬化物である皮膜。
- 下記式で表される化合物。
Yは、単結合又は*-Si(Rs2)2-Ls1-を表す。*は酸素原子との結合手を表す。
Zは、酸素原子又は炭素数1~10の2価の炭化水素基を表す。
Ra2は、それぞれ独立に、炭素数1~4のアルキル基を表す。
Rs1、Rs2は、それぞれ独立に、炭素数1~10の炭化水素基を表す。
Ls1は、炭素数1~10の2価の炭化水素基を表す。
n1は、1以上150以下の整数を表す。
Xは、式(X-1)~(X-3)のいずれかで表される基を表す。
Lx1~Lx2は、それぞれ、炭素数1~20の2価の炭化水素基を表し、該2価の炭化水素基に含まれるメチレン基(-CH2-)は、-O-又は-O-Si(Rx7)2-に置き換わっていてもよい。
Rx1~Rx7は、それぞれ、水素原子又は炭素数1~10の炭化水素基を表す。
Xa1は、それぞれ独立に、加水分解性基又はトリアルコキシシリルオキシ基を表す。
Xa2は、それぞれ独立に、トリアルキルシリル含有基、炭化水素鎖含有基、シロキサン骨格含有基、加水分解性基又はトリアルコキシシリルオキシ基を表し、Xa2が加水分解性基の場合、Xa2とXa1とは、同一であっても異なっていてもよい。
n2は、2以上20以下の整数を表す。
n3は、2以上5以下の整数を表す。
n4は、0以上5以下の整数を表す。
式(X-3)中、(Si(Rx4)(-Lx2-Si(Xa2)(Xa1)2)-O-)、(Si(Rx5)(Rx6)-O-)で表される単位の順序は任意である。]]
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