JP5149602B2 - Water-soluble titanium oligomer composition - Google Patents

Description

  The present invention relates to a water-soluble titanium oligomer composition, and more particularly to a water-soluble titanium oligomer composition containing a titanium composite composition having a specific chemical structure and composition.

  Titanium alkoxides and titanium chelate compounds reacted with β-diketones starting from titanium alkoxides are used as plastic film surface treatment agents, organic resin crosslinking agents, raw materials for titanium oxide synthesis by the sol-gel method, esterification catalysts Widely used as etc. However, these compounds are highly hydrolyzable, and titanium alkoxides are hydrolyzed by moisture contained in the air, and titanium chelate compounds are also hydrolyzed when exposed to water vapor for a long time.

  Therefore, in order to suppress the hydrolyzability of these titanium compounds and improve the coating properties, titanium compounds oligomerized with water may be used. However, the oligomerization is not sufficient to suppress the hydrolyzability, and there has been a problem that white turbidity or white precipitate is formed when exposed to water vapor or the like for a long time.

  On the other hand, in order to improve stability to water, titanium chelate compounds using triethanolamine and lactic acid which are water-soluble substituents, and compounds obtained by reacting or mixing glycol or amine with titanium alkoxide are also known. However, these compounds are monomeric water-soluble compounds, and when used as a surface treatment agent for plastic films, they have poor wettability and are prone to cracking. There is a problem that the film cannot be formed. Furthermore, the titanium chelate compound using triethanolamine has a problem that the surface remains sticky on drying at low temperature due to the residual triethanolamine, resulting in a blocking phenomenon in the plastic film.

JP 2004-256505 A Sugiyama Iwakichi “Contained Metal Organic Compounds and Their Use” R. Functional substance series No. 5, p. 112-p. 116 (Nippon CMI Co., Ltd.)

  This invention is made | formed in view of the said background art, The subject is providing the titanium oligomer composition which is stable with respect to water or water vapor | steam, and is soluble in water, As a crosslinking agent of water-system resin Water-soluble titanium oligomer composition that has high cross-linking performance when used, and does not generate cracks when applied to a plastic film or the like as a surface treatment agent and is dried, has good wettability, and provides a uniform coating surface To provide things.

  As a result of intensive studies to solve the above-mentioned problems, the inventor reacted or mixed an amine compound and a glycol compound with a titanium oligomer compound obtained by oligomerizing a titanium alkoxide or a titanium chelate compound with water. It is found that the titanium composite composition having the “chemical structure and mixed composition” obtained in this way is stable with respect to water and can be dissolved in water, and the above-mentioned problems can be solved. As a result, the present invention was completed.

  That is, the present invention contains at least a titanium composite composition having a chemical structure and composition obtained by reacting and / or mixing a titanium compound oligomer (a), an amine compound (b) and a glycol compound (c). It exists in the water-soluble titanium oligomer composition characterized by these.

  Moreover, this invention exists in the crosslinking agent of the water-system resin characterized by containing said water-soluble titanium oligomer composition. Moreover, this invention exists in the surface treating agent characterized by containing said water-soluble titanium oligomer composition.

  Although the water-soluble titanium oligomer composition of the present invention is water-soluble, it is extremely stable against water and water vapor. When used as a cross-linking agent for water-based resins, the water-based resin can be cross-linked to increase the heat resistance, water resistance, etc. of the water-based resin. It is possible to obtain a uniform coated surface that does not cause the above.

  When the water-soluble titanium oligomer composition of the present invention is used as a surface treating agent, polyethylene terephthalate (hereinafter abbreviated as “PET”), biaxially stretched polypropylene film (hereinafter abbreviated as “OPP”) Thus, it is possible to improve the adhesion of an organic resin or the like to an adherend such as a plastic film, and to produce a film that does not generate cracks. Moreover, since it is excellent in wettability to various adherends, uniform film-forming properties, adhesion, surface modification, etc., it can be adhered to adherends that are difficult to adhere with extremely high adhesiveness.

  Hereinafter, the present invention will be described. However, the present invention is not limited to the following embodiments, and can be arbitrarily modified and implemented.

[Titanium composite composition]
The water-soluble titanium oligomer composition of the present invention has a “chemical structure and composition” obtained by “reacting and / or mixing” “at least a titanium compound oligomer (a), an amine compound (b) and a glycol compound (c)”. The titanium composite composition having “

［式（１）中、Ｒ^１〜Ｒ^４は、それぞれ独立に炭素数１〜１８個のアルキル基を示す。］ [[Titanium compound oligomer (a)]]
The titanium compound oligomer (a) is not particularly limited, but “a titanium alkoxide represented by the following formula (1) or a structure in which a chelating agent is coordinated to a titanium alkoxide represented by the following formula (1)” What has the structure which "the titanium chelate compound" condensed is preferable.

Wherein ^(1), R 1 ~R ⁴ represents an alkyl group having 1 to 18 carbon atoms independently. ]

The “titanium alkoxide represented by the formula (1)” which is the starting material before the condensation is one in which R ^{1 to} R ⁴ in the above formula (1) are each independently an alkyl group having 1 to 18 carbon atoms. However, those each independently being an alkyl group having 1 to 8 carbon atoms are preferred, and those each independently being an alkyl group having 1 to 5 carbon atoms are particularly preferred.

  Specific examples of the “titanium alkoxide represented by the formula (1)” include, for example, tetramethoxy titanium, tetraethoxy titanium, tetra n-propoxy titanium, tetraisopropoxy titanium, tetra n-butoxy titanium, and tetraisobutoxy titanium. , Diisopropoxydi n-butoxytitanium, ditert-butoxydiisopropoxytitanium, tetratert-butoxytitanium, tetraisooctoxytitanium, tetrastearoxytitanium and the like. These can be used alone or in admixture of two or more.

  As a starting material before condensation, in addition to the above-mentioned “titanium alkoxide represented by formula (1)”, titanium having a structure in which a chelating agent is coordinated to “titanium alkoxide represented by formula (1)” Chelate compounds are also preferred. Such a chelating agent is not particularly limited, but the hydrolysis of the titanium compound should be at least one selected from the group consisting of β-diketone, β-ketoester, polyhydric alcohol, alkanolamine and oxycarboxylic acid. It is preferable in terms of improving stability against the above.

  The β-diketone compound is not particularly limited as long as it is coordinated as a chelating agent. For example, specifically, 2,4-pentanedione, 2,4-hexanedione, 2,4-heptanedione , Dibenzoylmethane, thenoyltrifluoroacetone, 1,3-cyclohexanedione, 1-phenyl-1,3-butanedione, and the like. These can be used alone or in combination of two or more.

  The β-ketoester is not particularly limited as long as it is coordinated as a chelating agent. Methyl isobutyroyl acetate, methyl caproyl acetate, methyl lauroyl acetate and the like. These can be used alone or in combination of two or more.

  The polyhydric alcohol is not particularly limited as long as it is coordinated as a chelating agent. 1,2-ethanediol, 1,2-propanediol, 1,2-butanediol, 1,2-pentanediol 2,3-butanediol, 2,3-pentanediol, glycerin, diethylene glycol, hexylene glycol and the like. These can be used alone or in combination of two or more.

  The alkanolamine is not particularly limited as long as it is coordinated as a chelating agent, but N, N-dimethylethanolamine, N, N-diethylethanolamine, N- (β-aminoethyl) ethanolamine, N -Methylethanolamine, N-methyldiethanolamine, N-ethylethanolamine, Nn-butylethanolamine, Nn-butyldiethanolamine, N-tert-butylethanolamine, N-tert-butyldiethanolamine, triethanolamine, Examples include diethanolamine and monoethanolamine. These can be used alone or in combination of two or more.

  The oxycarboxylic acid is not particularly limited as long as it coordinates as a chelating agent, and examples thereof include glycolic acid, lactic acid, tartaric acid, citric acid, malic acid, and gluconic acid. These can be used alone or in combination of two or more.

  The above-mentioned “titanium alkoxide represented by the formula (1)” or “titanium chelate compound having a structure in which a chelating agent is coordinated to the titanium alkoxide” is condensed to obtain a titanium compound oligomer (a). The method for condensation here is not particularly limited, but the titanium alkoxide or the titanium chelate compound is reacted by reacting water in an alcohol solution, or the amine compound (b) described later in the alcohol solution. A method of reacting in the state where water coexists is preferable.

  Regarding the amount of water used for the oligomerization by condensation, the number of moles of water is 0.2-2 with respect to 1 mole of the total amount of titanium alkoxide and / or titanium chelate compound, that is, 1 mole of titanium atom. Mole is preferable in terms of water stability, film-forming property, coatability, etc., more preferably 0.3 to 1.7 mol, and more preferably 0.5 to 1.6 mol. Particularly preferred is 1.0 to 1.5 mol.

  In addition, the above does not limit the manufacturing method of the titanium compound oligomer (a) in the present invention, and the chemical structure such as the condensation degree of the titanium compound oligomer (a) is specified by the manufacturing method such as the condensation method. It is what you are doing. This is because the titanium compound oligomer (a) may have a two-dimensional or three-dimensional chemical structure, and the chemical structure can only be specified by the production method. The titanium compound oligomer (a) having the following chemical structure is also used in the present invention.

When the titanium compound oligomer (a) is represented by a composition formula, when the number of moles of water to react is 2 moles with respect to 2 moles of titanium atoms, the titanium compound oligomer (a) represented by the following formula (2): Usually obtained by condensation.
TiO _{x / 2} (OR) _4-x (2)
[In Formula (2), R represents any of R ^{1 to} R ⁴ in Formula (1). ]

When 1 mol of water is reacted with 1 mol of titanium atom, that is, when 2 mol of water is reacted with 2 mol of titanium atom, x = 2.
TiO ₁ (OR) ₂ (3)
When 1.5 mol of water is reacted with 1 mol of titanium atom, that is, when 3 mol of water is reacted with 2 mol of titanium atom, x = 3.
TiO _3/2 (OR) ₁ (4).

  The composition having the composition formula obtained by substituting the value of x corresponding to the above-mentioned “preferable amount of water used for condensation and oligomerization” into the formula (2) is the condensation of the titanium compound oligomer (a). The degree is preferable.

  The titanium compound oligomer (a) in the present invention is not particularly limited as long as it is an oligomer, but on average, a 1.5 to 20 mer is preferable, a 2 to 15 mer is more preferable, and a 4 to 13 mer is particularly preferable. Preferably, a 5-12 dimer is still more preferable. From the viewpoint of stability to water, film-forming property, coating property, etc., those having a high degree of condensation are preferred. Although the above formula (3) represents in principle one having a one-dimensional infinite degree of condensation, the actual titanium compound oligomer (a) to be produced has a finite degree of condensation. The titanium compound oligomer (a) in the present invention is more preferably one having a chemical structure produced using an amount of water that has an infinite degree of condensation in principle.

At the time of condensation, a titanium compound oligomer (a) may be obtained by using a solvent such as alcohol and using the titanium alkoxide or the titanium chelate compound as an alcohol solution, and optionally through a heat treatment such as reflux. Although there is no particular limitation on the alcohol used in this case, a monohydric alcohol having an alkyl group R ¹ to R ⁴ in the formula (1) is preferred in that does not change the reactivity of the titanium compound oligomer (a). Specific examples include methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, tert-butanol, 2-ethylhexanol and the like. These can be used alone or in combination of two or more.

  The amount of the alcohol used is not particularly limited, but the amount of water used for condensation and oligomerization is 0.5 to 20% by mass with respect to the total amount of water and the alcohol. Dilution with alcohol is preferable from the viewpoint of suppressing the occurrence of white turbidity and white precipitates in the chemical solution, and it is more preferable to dilute to a concentration of 0.7 to 15% by mass, and 1.0 to 10%. It is particularly preferable to dilute to a concentration of mass%.

  It is also preferable that the titanium compound oligomer (a) has a structure in which a chelating agent is further coordinated with the above-described titanium compound oligomer. That is, a structure obtained by further coordinating a chelating agent to a titanium alkoxide represented by the formula (1) or a structure obtained by condensing a titanium chelate compound having a structure coordinated with a chelating agent. Also preferred are those having That is, a structure in which a chelating agent is reacted before and / or after the condensation is preferable in terms of enhancing the stability of the titanium compound oligomer (a) against hydrolysis.

  Although there is no limitation in particular as a chelating agent used after condensation, the above-mentioned chelating agent can be used conveniently. Particularly preferred are β-diketone, β-ketoester or alkanolamine.

[[Amine compound (b)]]
The amine compound (b) to be reacted and / or mixed with the titanium compound oligomer (a) for obtaining the titanium composite composition is not particularly limited, but is substituted or unsubstituted aliphatic amine or quaternary ammonium water. It is preferable that it is an oxide from the viewpoint of improving the stability against hydrolysis of the titanium oligomer compound (a) and making it water-soluble.

  The substituent in the “substituted or unsubstituted aliphatic amine” is preferably an alcoholic hydroxyl group. Alkanolamine is particularly preferred as the substituted aliphatic amine.

  Specific examples of the unsubstituted aliphatic amine include aliphatic alkylamines such as methylamine, ethylamine, n-propylamine, isopropylamine, n-butylamine, isobutylamine, sec-butylamine, tert-butylamine, and amylamine. , Sec-amylamine, dimethylamine, diethylamine, di-n-propylamine, diisopropylamine, dibutylamine, trimethylamine, triethylamine, tripropylamine, tributylamine; aliphatic cyclic amines such as piperidine and pyrrolidine. These can be used alone or in combination of two or more.

  Specific examples of the alkanolamine include N, N-dimethylethanolamine, N, N-diethylethanolamine, N- (β-aminoethyl) ethanolamine, N-methylethanolamine, N-methyldiethanolamine, N -Ethylethanolamine, Nn-butylethanolamine, Nn-butyldiethanolamine, N-tert-butylethanolamine, N-tert-butyldiethanolamine, triethanolamine, diethanolamine, monoethanolamine and the like. These can be used alone or in combination of two or more.

  Specific examples of the quaternary ammonium hydroxide include tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, trimethylbenzylammonium hydroxide, and 2-hydroxyethyltrimethyl. Examples thereof include ammonium hydroxide. These can be used alone or in combination of two or more.

[[Glycol compound (c)]]
The glycol compound (c) to be reacted and / or mixed with the titanium compound oligomer (a) for obtaining the titanium composite composition is not particularly limited, but a glycol compound having a hydroxyl group at each adjacent carbon atom is preferred. Specifically, for example, 1,2-ethanediol, 1,2-propanediol, 1,2-butanediol, 1,2-pentanediol, 2,3-butanediol, 2,3-pentanediol, glycerin Etc. Among these, 1,2-ethanediol, 1,2-propanediol, or 2,3-butanediol is particularly preferable from the viewpoint of improving the stability of the titanium oligomer compound with respect to hydrolysis or the like and making it water-soluble.

  By using the glycol compound (c), the stability of the titanium oligomer compound (a) against hydrolysis and the like can be improved and water-solubilized.

[[Ratio of each component in titanium composite composition]]
The use ratio of “titanium compound oligomer (a)”, “amine compound (b)” and “glycol compound (c)” is not particularly limited, but the molar ratio of (b) and (a) is (b) / (A) = 0.1 / 10 to 10 / 0.1 is preferable, (b) / (a) = 0.3 / 10 to 10 / 0.3 is more preferable, and 0.5 / 10 to 10/0 .5 is particularly preferred. If the amount of (a) is too small relative to the total amount of (a) and (b), it will cause a decrease in crosslinkability, film-forming property, adhesiveness, etc., while if too much (a), it will dissolve in water. And stability such as hydrolysis may be insufficient.

  The molar ratio of (c) to (a) is preferably (c) / (a) = 0.1 / 10 to 10 / 0.1, and (c) / (a) = 0.5 / 10 to 10 / 0.5 is more preferable, and 1/10 to 10/1 is particularly preferable. If the amount of (a) is too small relative to the total amount of (a) and (c), it will cause a decrease in crosslinkability, film-forming properties, adhesiveness, etc. On the other hand, if (a) is too large, it will dissolve in water. And stability such as hydrolysis may be insufficient.

  Regarding the chemical structure of a compound having a structure obtained by the reaction of a titanium compound oligomer (a), an amine compound (b) and a glycol compound (c) (hereinafter abbreviated as “compound A”) in the titanium composite composition If it has a structure obtained with the said manufacturing method, it will not be limited to what was manufactured with the specific manufacturing method.

  The chemical structure of compound A is preferably a structure in which the titanium compound oligomer (a) reacts with the amine compound (b) and the glycol (c), and the titanium chelate oligomer glycol chelate and the amino group coordinate to titanium. In particular, the alkoxyl group at the end of the titanium compound oligomer (a) reacts with the amine compound (b) and / or the glycol compound (c) to form a chelated structure or an amino group or glycol compound present in the amine compound. A structure in which an existing hydroxyl group is coordinated to a titanium atom is preferable.

  The titanium composite composition in the present invention contains the compound A, a titanium compound oligomer (a), an amine compound (b) and / or a glycol (c). The titanium composite composition may have a composition in which the amine compound (b) and the glycol compound (c) are mixed at room temperature with the titanium compound oligomer (a), or the titanium compound oligomer (a). On the other hand, it may have a composition obtained by heating and refluxing the amine compound (b) and the glycol compound (c). The “mixed composition” includes the case where the whole amount of the reaction does not proceed and the unreacted remaining material is mixed, and the case where only a part is reacted.

The titanium composite composition in the present invention is not particularly limited as long as it is a composition obtained by the above method, but the following five forms are preferable.
(1) Compound A;
(2) Mixture of compound A and titanium compound oligomer (a);
(3) a mixture of compound A and glycol compound (c);
(4) Mixture of compound A, titanium compound oligomer (a) and glycol compound (c);
(5) A mixture of a titanium compound oligomer (a), an amine compound (b) and a glycol compound (c);
Among these, form (1) and form (5) are preferable in that the above-described effects of the present invention can be suitably obtained.

[Silicon compound (d)]
The water-soluble titanium oligomer composition of the present invention may be composed of only the above titanium composite composition. However, the titanium composite composition further includes a “silicon compound having one or more alkoxy groups in the molecule ( d) "(hereinafter abbreviated as" silicon compound (d) ") may have a chemical structure and composition obtained by reaction and / or mixing.

  Although there is no limitation in particular as a silicon compound (d), A silane coupling agent, the silicon compound etc. which four alkoxy groups couple | bonded with the silicon atom, etc. are preferable at the point which improves film forming property. Among these, those containing an amino group, a mercapto group or an epoxy group are preferred from the viewpoint of further improving the film forming property. Further, those having a structure in which an alkyl group is directly bonded to a silicon atom are preferable in terms of improving the film forming property. In this case, the alkyl group is preferably a methyl group. Moreover, the partial hydrolysis-condensation product of the said compound can also be used conveniently.

  Specific examples of the silicon compound (d) include tetramethoxysilane, tetraethoxysilane, tetranormalpropoxysilane, γ-aminopropylaminoethyltrimethoxysilane, γ-aminopropylaminoethylmethyldimethoxysilane, and γ-amino. Propylaminoethyltriethoxysilane, γ-aminopropylaminoethylmethyldiethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-ureidopropyltrimethoxysilane, γ-ureidopropyltriethoxysilane, N-phenyl-γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropyltriethoxysilane γ-glycidoxypropylmethyldiethoxysilane, β- (3,4-epoxycyclohexyl) ethyltriethoxysilane, γ-mercaptopropyltriethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropylmethyldiethoxysilane , Γ-mercaptopropylmethyldimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropyltrimethoxysilane and the like. These can be used alone or in admixture of two or more.

  When the silicon compound (d) is used in combination with the above-described titanium composite composition to obtain a water-soluble titanium oligomer composition, the titanium composite composition is obtained by reacting and / or mixing the silicon compound (d) with the titanium composite composition. It is preferable to have a structure. Here, the reaction method is not particularly limited, but it is preferable that the titanium composite composition and the silicon compound (d) are mixed and then refluxed at the boiling point of the solvent used to advance the reaction. There is no regulation in the order of blending.

  The use ratio of the titanium composite composition and the silicon compound (d) is not particularly limited, but the mass ratio of the titanium composite composition and the silicon compound (d) is 0.1 / 10 to 10 / 0.1. Preferably, it is 0.5 / 10 to 10 / 0.5, more preferably 1/10 to 10/1. If the amount of the titanium composite composition is too small relative to the total amount of the titanium composite composition and the silicon compound (d), the film forming property is reduced. On the other hand, if the amount of the titanium composite composition is too large, the film forming property is reduced. And stability such as hydrolyzability may be insufficient.

  The water-soluble titanium oligomer composition of the present invention is not limited to those produced by the production method described above, and any production method can be used as long as it has a chemical structure and composition produced by the production method described above. Even if they are different, they are included in the present invention. However, the water-soluble titanium oligomer composition of the present invention is preferably produced by the production method described above. That is, at least reacting and / or mixing the titanium compound oligomer (a), the amine compound (b) and the glycol compound (c) as a method for producing a titanium composite composition and a method for producing a water-soluble titanium oligomer composition. preferable. Moreover, it is preferable as a manufacturing method of a water-soluble titanium oligomer composition to make a titanium compound composition react and / or mix the silicon compound (d) which has a 1 or more alkoxy group in a molecule | numerator.

[Crosslinking agent]
The water-soluble titanium oligomer composition of the present invention can be suitably used as a water-based crosslinking agent by blending with a water-based resin. Moreover, it can use suitably for a surface treating agent. That is, it is preferable to add the water-soluble titanium oligomer composition of the present invention to a water-based paint or a surface treatment agent. In the present invention, “aqueous resin” refers to a resin that is dissolved, suspended, or emulsified in a solvent or dispersion medium mainly composed of water. In addition to the water-soluble resin paint, the “water-based paint” includes a water-emulsion paint of a resin that is not water-soluble.

  Among the water-based resins, the water-soluble resin is not particularly limited, and examples thereof include polyvinyl alcohol, polyvinyl pyrrolidone, and a hydrolyzate of polyvinyl acetate. Examples of the resin suspended or emulsified in water include (meth) acrylic resins and vinyl acetate resins. The crosslinking condition is not particularly limited as long as it is a condition usually used for crosslinking of a paint, but is preferably 30 to 100 ° C., and particularly preferably 40 to 80 ° C. when cured by heating. The curing time is preferably 10 seconds or longer, particularly preferably 1 minute or longer.

[Surface treatment agent]
The surface treatment agent is preferable from the viewpoint of the working environment because it can be diluted with water and applied without using an organic solvent. The surface on which the water-soluble titanium oligomer composition of the present invention is suitably used is not particularly limited, but is a plastic surface such as PET, OPP, or polyethylene; a metal surface; a rubber surface such as ethylene propylene rubber or styrene butadiene rubber; Is mentioned. The surface treatment agent containing the water-soluble titanium oligomer composition of the present invention is applied to the surface so that the dry film thickness is preferably 0.01 μm to 1 μm, particularly preferably 0.02 μm to 0.5 μm. . Thereafter, it is dried according to a conventional method to obtain a treated surface.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to these examples unless it exceeds the gist.

Production Example 1
Tetraisopropoxytitanium (28.4 g, 0.10 mol) was dissolved in isopropanol (50.0 g), and then a mixture of water (2.7 g, 0.15 mol) and isopropanol (50.0 g) was added dropwise. After completion of dropping, the mixture was stirred for 1 hour to obtain “titanium compound oligomer (a) A”. Next, after adding 8.9 g (0.10 mol) of N, N-dimethylmonoethanolamine, the mixture was stirred for 1 hour, and then 30.4 g (0.40 mol) of 1,2-propanediol was added. The mixture was stirred for an hour and further refluxed for 1 hour to obtain “titanium composite composition A”. The titanium composite composition A is referred to as “water-soluble titanium oligomer composition A”.

Production Example 2
Tetraisopropoxytitanium (28.4 g, 0.10 mol) was dissolved in isopropanol (50.0 g), and then a mixture of water (2.7 g, 0.15 mol) and isopropanol (50.0 g) was added dropwise. After completion of dropping, the mixture was stirred for 1 hour to obtain “titanium compound oligomer (a) B”. Next, after adding 5.9 g (0.05 mol) of Nn-butylethanolamine, the mixture was stirred for 1 hour, and then 36.8 g (0.40 mol) of glycerin was added and stirred for 1 hour. The mixture was refluxed for a time to obtain “titanium composite composition B”. The titanium composite composition B is referred to as “water-soluble titanium oligomer composition B”.

Production Example 3
Tetra n-butoxytitanium (34.0 g, 0.10 mol) was dissolved in n-butanol (30.0 g), and then a mixture of water (2.7 g, 0.15 mol) and n-butanol (60.0 g) was added dropwise. . After completion of dropping, the mixture was stirred for 1 hour to obtain “titanium compound oligomer (a) C”. Next, after adding 3.7 g (0.05 mol) of diethylamine and stirring for 1 hour, 36.0 g (0.40 mol) of 1,2-butanediol was added and stirred for 1 hour, and further for 1 hour. The mixture was refluxed to obtain “titanium composite composition C”. The titanium composite composition C is referred to as “water-soluble titanium oligomer composition C”.

Production Example 4
Tetraisopropoxytitanium (28.4 g, 0.10 mol) was dissolved in isopropanol (50.0 g), and then a mixture of water (2.7 g, 0.15 mol) and isopropanol (50.0 g) was added dropwise. After completion of dropping, the mixture was stirred for 1 hour to obtain “titanium compound oligomer (a) D”. Next, after adding 8.9 g (0.10 mol) of N, N-dimethylmonoethanolamine, the mixture was stirred for 1 hour, and then 36.0 g (0.40 mol) of 2,3-butanediol was added. The mixture was stirred for an hour and further refluxed for 1 hour to obtain “titanium composite composition D”. The titanium composite composition D is referred to as “water-soluble titanium oligomer composition D”.

Production Example 5
“Titanium compound oligomer (a)” was prepared in the same manner as in Production Example 4 except that the amount of water relative to 28.4 g (0.10 mol) of tetraisopropoxytitanium was changed to 2.2 g (0.12 mol) of water. E "and" titanium composite composition E "were obtained. The titanium composite composition E is referred to as “water-soluble titanium oligomer composition E”.

Production Example 6
After dissolving 36.4 g (0.1 mol) of diisopropoxybisacetylacetonate titanium in 50.0 g of isopropanol, a mixed solution of 2.7 g (0.15 mol) of water and 100.0 g of isopropanol was added dropwise. After completion of dropping, the mixture was stirred for 1 hour and further refluxed for 1 hour to obtain "titanium compound oligomer (a) F". Next, after adding 5.1 g (0.05 mol) of triethylamine and stirring for 1 hour, 30.4 g (0.40 mol) of 1,2-propanediol was added and stirred for 1 hour, and further for 1 hour. The mixture was refluxed to obtain “titanium composite composition F”. The titanium composite composition F is referred to as “water-soluble titanium oligomer composition F”.

Production Example 7
Tetraisopropoxytitanium (28.4 g, 0.10 mol) was dissolved in isopropanol (50.0 g), and then a mixture of water (2.7 g, 0.15 mol) and isopropanol (50.0 g) was added dropwise. After completion of dropping, the mixture was stirred for 1 hour to obtain “titanium compound oligomer (a) G”. Next, after adding 8.9 g (0.10 mol) of N, N-dimethylmonoethanolamine, the mixture was stirred for 1 hour, and then 30.4 g (0.40 mol) of 1,2-propanediol was added. The mixture was stirred for an hour and further refluxed for 1 hour to obtain “titanium composite composition G”.

  To the titanium composite composition G, 44.4 g (0.20 mol) of γ-aminopropylaminoethylmethyldiethoxysilane was added, stirred for 1 hour, and further refluxed for 1 hour. This is designated as “water-soluble titanium oligomer composition G”.

Production Example 8
To 28.4 g (0.10 mol) of tetraisopropoxy titanium, 8.9 g (0.10 mol) of N, N-dimethylmonoethanolamine was added. After the addition, the mixture was stirred for 1 hour. Further, 30.4 g (0.40 mol) of 1,2-propanediol was added, stirred for 1 hour, and further refluxed for 1 hour to obtain “titanium compound a”.

Production Example 9
To 34.0 g (0.10 mol) of tetra-n-butoxytitanium, 5.1 g (0.05 mol) of triethylamine was added, followed by stirring for 1 hour. Thereafter, 30.4 g (0.40 mol) of 1,2-propanediol was added, stirred for 1 hour, and further refluxed for 1 hour to obtain “titanium compound b”.

Production Example 10
To 28.4 g (0.1 mol) of tetraisopropoxytitanium, 10.1 g (0.1 mol) of triethylamine was added over 30 minutes. Subsequently, 46.8 g (0.2 mol) of γ- (2-aminoethyl) aminopropylmethyldiethoxysilane was added, and then 49.6 g (0.8 mol) of 1,2-ethanediol was added. The mixture was stirred for 1 hour and further refluxed for 1 hour to obtain “titanium compound c”.

Examples 1-7, Comparative Examples 1-13
[Evaluation of stability and solubility in water]
Tetraisopropoxy titanium, tetra n-butoxy titanium, tetra n-butoxy titanium dimer, “titanium compound oligomers (a) A to G” produced in Production Examples 1 to 7, “water-soluble titanium oligomer compositions A to G”, 10 parts by mass of “titanium compounds a to c” produced in Production Examples 8 to 10 were added to 90 parts by mass of water, and the stability to water and the solubility in water were confirmed. The results are shown in Table 1.

  As can be seen from the results of Examples 1 to 7 in Table 1 above, the water-soluble titanium oligomer compositions A to G produced in Production Examples 1 to 7 are soluble in water and excellent in water stability. It was. On the other hand, in the titanium compounds of Comparative Examples 1 to 3 and Production Examples 1 to 7, the titanium compound oligomers (a) A to G (Comparative Examples 4 to 10) before adding the amine compound (b) and the glycol compound (c) In either case, a white precipitate was formed, and the stability to water and the solubility in water were poor.

Examples 8-14, Comparative Example 14
[Evaluation of crosslinking performance for polyvinyl alcohol]
5 mass% aqueous solution of polyvinyl alcohol ("Gohsenol" N-300 (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)) as an aqueous resin, 2 parts by mass of the water-soluble titanium oligomer compositions A to G produced in Production Examples 1 to 7 100 parts by mass was mixed to obtain a resin solution.

  Further, instead of 2 parts by mass of the water-soluble titanium oligomer compositions A to G, 2 parts by mass of diisopropoxytitanium bis (triethanolaminate) (“Orgatechs TC-400” manufactured by Matsumoto Fine Chemical Co., Ltd.) was used. The resin solution of Comparative Example 14 was obtained in the same manner as in Examples 8-14.

5 g of the resin solutions of Examples 8 to 14 and Comparative Example 4 were weighed in an aluminum cup having a bottom area of 70 cm ² and dried in a hot air circulating dryer at 40 ° C. for 12 hours. The dried membrane was placed in a 100 mL beaker, 100 mL of water was added and boiled for 1 hour. Thereafter, the insoluble matter was filtered using a filter paper, dried at 105 ° C. for 2 hours, the mass of the filter paper and the insoluble matter was weighed, and the insolubilization rate (mass%) was calculated from the following formula. The results are shown in Table 2 below.
Insolubilization rate (mass%) = [(C−B) / A] × 100
Where A = mass of film before test (g)
B = Mass of filter paper (g)
C = mass of filter paper + insoluble matter (g)

  “Water-soluble titanium oligomer compositions A to G” of Examples 8 to 14 of the present invention showed high crosslinkability with respect to polyvinyl alcohol. On the other hand, the titanium compound of Comparative Example 14 did not show high crosslinkability with respect to polyvinyl alcohol.

[Evaluation of film formability and curability]
5 mass parts of water-soluble titanium oligomer compositions A to G produced in Production Examples 1 to 7 were added to and mixed with 95 mass parts of water to obtain surface treatment agents of Examples 15 to 21. Further, as Comparative Example 15, the titanium compound a produced in Production Example 8 was used, and as Comparative Example 16, the titanium compound b produced in Production Example 9 was used. Obtained.

  The surface treatment agents of Examples 15 to 21 and Comparative Examples 15 to 16 were applied to the surface of an untreated PET (polyethylene terephthalate) film having a thickness of 50 μm with a bar coater No. After coating at 4, it was dried for 30 seconds in a hot air circulating dryer at 150 ° C. The surface of the dried film was observed with a laser microscope for occurrence of cracks, and evaluation was made with ○ indicating that no crack was generated and × indicating that crack was generated. At the same time, after the surface of the dried film was rubbed with a finger, the surface was visually observed. The transparent film was evaluated as ◯, and the film whitened after rubbing was evaluated as x. The results are shown in Table 3 below.

  As can be seen from the results of Examples 15 to 21 in Table 3 above, the water-soluble titanium oligomer compositions A to G of the present invention produced in Production Examples 1 to 7 generate cracks even when dried at 150 ° C. for 30 seconds. A uniform membrane could be prepared. Furthermore, it was possible to obtain a film that remained transparent even when it was rubbed with a finger. On the other hand, in Production Examples 8 to 10, in the titanium compounds a to c obtained by reacting and / or mixing the amine compound (b) and the glycol compound (c) with the titanium compound monomer, cracks occurred in the same evaluation, and scratching occurred. Later, the film whitened (Comparative Examples 15 to 17).

  The water-soluble water-soluble titanium oligomer composition of the present invention can be cross-linked by adding it to a water-based paint or resin to impart functions such as water resistance and solvent resistance, and is also used as a surface treatment agent. Thus, since a uniform surface can be obtained, it is widely used in industrial fields such as the paint field and the surface treatment field.

Claims (10)

  At least one alkoxy compound in the molecule having a chemical structure and composition obtained by reacting and / or mixing at least a titanium compound oligomer (a), an amine compound (b) and a glycol compound (c). It has a chemical structure and composition obtained by reacting and / or mixing a silicon compound (d) having a group, and the molar ratio of (b) and (a) is (b) / (a) = 0.1 / 10 The molar ratio of (c) and (a) is (c) / (a) = 0.1 / 10 to 10 / 0.1, and the titanium composite composition and (d ) Mass ratio of 0.1 / 10 to 10 / 0.1. The titanium compound oligomer (a) has a structure in which a titanium alkoxide represented by the following formula (1) is condensed, or a titanium having a structure in which a chelating agent is coordinated to a titanium alkoxide represented by the following formula (1). The water-soluble titanium oligomer composition according to claim 1, wherein the chelate compound has a condensed structure.

Wherein ^(1), R 1 ~R ⁴ represents an alkyl group having 1 to 18 carbon atoms independently. ] The titanium compound oligomer (a) has a structure in which a titanium alkoxide represented by the following formula (1) is condensed, or a titanium having a structure in which a chelating agent is coordinated to a titanium alkoxide represented by the following formula (1). The water-soluble titanium oligomer composition according to claim 1, which has a chemical structure obtained by further coordinating a chelating agent to a compound having a structure in which a chelate compound is condensed.

Wherein ^(1), R 1 ~R ⁴ represents an alkyl group having 1 to 18 carbon atoms independently. ]   The water-soluble titanium oligomer composition according to claim 2 or 3, wherein the condensation is performed by reacting the titanium alkoxide or the titanium chelate compound with water in an alcohol solution.   5. The condensation according to claim 2, wherein the condensation is carried out by reacting 0.2 to 2 mol of water in an alcohol solution with respect to 1 mol of titanium alkoxide and / or titanium chelate compound. The water-soluble titanium oligomer composition according to claim.   6. The claim according to claim 2, wherein the chelating agent is at least one selected from the group consisting of β-diketone, β-ketoester, polyhydric alcohol, alkanolamine and oxycarboxylic acid. A water-soluble titanium oligomer composition.   The water-soluble titanium oligomer composition according to any one of claims 1 to 6, wherein the amine compound (b) is a substituted or unsubstituted aliphatic amine or a quaternary ammonium hydroxide.   The water-soluble titanium oligomer composition according to any one of claims 1 to 7, wherein the glycol compound (c) is 1,2-ethanediol, 1,2-propanediol or 2,3-butanediol. object.   A water-based resin crosslinking agent comprising the water-soluble titanium oligomer composition according to any one of claims 1 to 8. A surface treatment agent comprising the water-soluble titanium oligomer composition according to any one of claims 1 to 8.