WO2002062897A2 - Polyorganosiloxan-zusammensetzung - Google Patents
Polyorganosiloxan-zusammensetzung Download PDFInfo
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- WO2002062897A2 WO2002062897A2 PCT/EP2002/000718 EP0200718W WO02062897A2 WO 2002062897 A2 WO2002062897 A2 WO 2002062897A2 EP 0200718 W EP0200718 W EP 0200718W WO 02062897 A2 WO02062897 A2 WO 02062897A2
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- WIPO (PCT)
- Prior art keywords
- weight
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- trisalkoxysilylalkyl
- polyorganosiloxane
- polyorganosiloxane composition
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- 0 CN(C(N(*)C(N1*)=O)=O)C1=O Chemical compound CN(C(N(*)C(N1*)=O)=O)C1=O 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31667—Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
Definitions
- the invention relates to a polyorganosiloxane composition, a method for combining the components and a method for vulcanizing said polyorganosiloxane composition, the vulcanized composition obtainable thereby, composite materials which contain a substrate and said vulcanized composition, and the use of the polyorganosiloxane composition ,
- the invention relates in particular to one-component silicone rubber mixtures which have a neutral crosslinking action at room temperature and which have an immediate adhesion to polymethyl metharylate (PMMA) after vulcanization, a process for their preparation and their use.
- Crosslinking neutral means that no corrosive or odor-intensive fission products are released during the crosslinking.
- Polyorganosiloxane compositions hereinafter referred to as RTV-1K (room temperature-vulcanizing one-component) alkoxy systems, are ready-to-use compositions that can be stored under the exclusion of moisture, which only react to form elastomers when air humidity is released with the elimination of alcohols. Products of this type with increased shelf life have been known for a long time and are on the market, among others. established for use as joint sealants (DE 195 07 416). As shown here, the production of transparent polyorganosiloxane compositions is also possible.
- the present invention relates in particular to transparent RTN-IK compositions which immediately adhere to polymethyl methacrylate (PMMA) after vulcanization.
- PMMA polymethyl methacrylate
- PMMA Polymethyl methacrylate
- Plexiglas® Plexiglas®
- Crehm & Haas and Röhm Plexiglas®
- PMMA is also used in optics, where it is used to manufacture lenses and optical fibers.
- PMMA is also used as a coating material for materials. For example, surfaces of window frames are treated with PMMA to achieve a wood-imitating effect, or aluminum strips are treated with PMMA powder coatings to protect them from environmental influences or to color them.
- the adhesion to PMMA built up immediately after the crosslinking process therefore represents an important property of the RTV-IK materials in addition to the permanent elasticity.
- US Pat. No. 5,175,057 presents one-component alkoxy compositions which are based on a dialkyltin bis-diketonate as catalyst, on "M, D, T” silanol and on amino, ether, epoxy, isocyanate, cyano, acryloxy and Acyloxy radical functionalized alkoxysilanes are based as adhesives. None of the compositions presented in US 5,175,057 show adhesion to PMMA immediately after vulcanization. Further versions of these silicone rubber compounds are disclosed by Lucas in US 5,232,982. They have a broader adhesive spectrum on plastics, especially on polycarbonate, but fail on PMMA.
- the self-adhesive RTN-IK compositions described in US 4,680,364 are based on the effect of titanium chelates as adhesion-promoting additives. Although the RTV-IK compositions described here show a broader range of adhesion, the adhesion to PMMA is not described. Furthermore, the poor solubility of titanium chelates in polydimethylsiloxane (PDMS) and the associated clouding of the siloxane compositions and the reddish inherent color of the chelates mentioned in US Pat. No. 4,680,364 have a disadvantageous effect on the transparency of the RTV-IK compositions.
- PDMS polydimethylsiloxane
- RTV sealant based on titanium compounds, which automatically adheres to PMMA after its vulcanization.
- the disadvantage of the RTV-IK sealant mentioned in US Pat. No. 5,420,196 is the proportion of hexamethyldisilazane which has a stabilizing action and which, by hydrolysis when air humidity is introduced, causes a pungent ammonia odor, which drastically limits the applicability of this system.
- the use of a combination of three different adhesion-promoting additives described in US Pat. No. 5,420,196 with up to 1.1% of the respective components has a disadvantageous effect on the material costs. Friebe et al. put in DE 195 33 915 neutral, on organometallic
- the object of this invention was to provide polyorganosiloxane compositions which immediately after the vulcanization process and without the use of primers show adhesion to plastic substrates, in particular to PMMA surfaces, and which have the disadvantages of the RTV-IK compositions described in the prior art, such as inadequate odor properties or, in the case of tin-free catalyst systems, insufficient transparency or inadequate storage stability.
- Storage stability means that the property of the RTV-1-K masses can be stored for a defined period of time with the exclusion of moisture and then be cross-linkable after access to ambient air.
- the compositions provided by the present invention should therefore, in particular in the case of tin-containing catalyst systems, transparent, odorless, neutral vulcanizing at room temperature
- a polyorganosiloxane composition comprising: a) at least one crosslinkable polyorganosiloxane, b) at least one, alkoxysilane / sulfoxane crosslinker c) at least one phosphoric acid ester and / or a salt thereof, d) at least one containing tin Catalyst or at least one titanium chelate-containing catalyst, e) at least one aminoalkylsiloxane, f) 0.05 to 2% by weight, based on 100% by weight of the composition, of at least one compound selected from the group consisting of an isocyanurate of the formula
- R, R and R can be identical or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the substituents R 22 , R 23 and R 24 is a trisalkoxysilylalkyl group, a cyanurate of the formula
- R, R and R may be the same or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the substituents R, R and R is a trisalkoxysilylalkyl group, and condensation products with Si-O-Si bonds of the abovementioned isocyanurates and cyanurates and mixtures thereof
- component f based on the total mass of the silicone rubber composition, was used as the adhesive in polyorganosiloxane compositions containing phosphoric acid esters and organometallic catalyst systems leads to silicone rubber mixtures which, immediately after the curing process and without the use of primers, show adhesion to PMMA and increase the storage stability.
- the use of an adhesive combination of three can here Individual components from be told.
- the use of hexamethyldisilazane is also not necessary.
- the inventive in the case of
- crosslinkable polyorganosiloxanes (component a) of the composition used according to the invention are preferably those of the general formula
- substituents R and R each independently is optionally substituted C ⁇ -C 8 alkyl, C ⁇ -C ⁇ aryl or C 2 -C 8 alkenyl groups, and the substituents R 1 are each independently hydrogen, optionally substituted C ⁇ - C 8 alkyl, optionally substituted C 1 -C 8 alkoxy (C 8 -C 8 ) alkyl, poly (alkyleneoxy) alkyl or C 2 -C 8 alkenyl
- the substituents R 1 , R 2 and R can be identical or different
- the substituents R 1 in a molecule or different molecules can also be identical or different, this also applies to the substituents R ⁇ and R.
- the above-mentioned optionally substituted -CC 8 alkyl groups include linear and branched alkyl groups having 1 to 8 carbon atoms: for example methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, pentyl, hexyl, heptyl , Octyl etc. Methyl is preferred.
- Substituents of the above-mentioned optionally substituted -C - alkyl groups include, in particular, fluorine, and examples of the substituted alkyl groups are, for example, trifluoropropyl radicals, CgF ⁇ ethylene, C3F5-propylene or fluoroxirane propyloxypropylene.
- the above-mentioned optionally substituted C 6 -C 4 aryl groups include aromatic groups having 6 to 14 carbon atoms, such as phenyl or naphthyl, etc. Phenyl is preferred.
- C 2 -C 8 alkenyl groups include linear and branched alkenyl groups having 2 to 8 carbon atoms: for example vinyl, allyl, etc. Vinyl is preferred.
- R is preferably a methyl group.
- R 2 is preferably methyl.
- R 1 is preferably methyl, vinyl or hydrogen.
- Preferred alkyleneoxy groups in poly (alkyleneoxy) alkyl are ethyleneoxy and propyleneoxy.
- crosslinkable polyorganosiloxanes are known per se in the prior art and are described, for example, in the patents mentioned above.
- the crosslinkable polyorganosiloxanes used according to the invention preferably have a viscosity of 0.1 to 1000 Pa-s, more preferably of 10 to 200 Pa.s. at 25 ° C.
- One or more types of polyorganosiloxanes can be used in the composition according to the invention.
- alkoxy crosslinker can be the one described below in which
- Act composition of the invention contained alkoxy crosslinker.
- Composition is included and serves as a crosslinker during curing.
- the amount of crosslinkable polyorganosiloxanes used according to the invention in the composition according to the invention is preferably at least about 30% by weight, more preferably at least about 40% by weight.
- the maximum is about 99.3% by weight, preferably about 85% by weight, so that the following preferred ranges result: from 30% by weight to 99.3% by weight, more preferably from 40% by weight to 85 % By weight, in each case based on the total amount of the composition according to the invention.
- alkoxysilane / siloxane crosslinkers used according to the invention are preferably an organosilicon compound of the formula
- substituents R each independently represent optionally substituted C 1 -C 8 alkyl, C 6 -C 4 aryl or C 2 -C 8 alkenyl groups
- R 3 is an optionally substituted C 1 -C 8 alkyl, or C 2 -C 8 alkenyl group and b is an integer of 0, 1 or 2, and condensates thereof.
- R 3 and R 4 may be the same or different from each other.
- optionally substituted C ⁇ -C 8 alkyl, C ⁇ -C 8 alkoxyalkyl, C 6 -C ⁇ aryl or C 2 -C 8 alkenyl group can be made to the remarks made previously to polyorganosiloxanes.
- optionally substituted C 1 -C 8 alkyl includes: C 1 -C 8 alkoxy (C 1 -C 8 ) alkyl.
- the alkoxysilane / siloxane crosslinking agent is particularly preferably at least one constituent selected from the group consisting of tetraethoxysilane, polysilicic acid esters, vinyltrialkoxysilanes, methoxyethyltrialkoxysilanes and methyltrialkoxysilanes.
- the alkoxy crosslinkers are more preferably selected from
- BESTATIGUNGSKOPIE Methyltrimethoxysilane, methyltriethoxysilane, vinyltrimethoxysilane and / or vinyltriethoxysilane.
- One or more alkoxy crosslinkers can be used in the composition according to the invention.
- the amount of alkoxysilane used according to the invention can be used in the composition according to the invention.
- / Siloxane crosslinker in the composition according to the invention is preferably at least about 0.3% by weight, more preferably at least about 0.4% by weight.
- the maximum amount is about 10% by weight, preferably about 6% by weight, so that the following preferred ranges result: from 0.3% by weight to 10% by weight, more preferably from 0.4% by weight to 6% by weight, based in each case on the total amount of the composition according to the invention.
- aminoalkylsiloxanes used in the polyorganosiloxane compositions or RTV-IK compositions according to the invention preferably correspond to the general formula
- X is selected from -NH 2 and / or -NHCH 2 CH NH 2 and the substituents R 5 each independently optionally substituted -CC 8 -alkyl-, C ⁇ -C -aryl-, C 2 -C 8 -alkenyl- or represent siloxane groups.
- substituents R, R and R With regard to the meaning of the -C 8 alkyl, C 6 -C aryl, C 2 -C 8 alkenyl groups, reference can be made to the explanations above for the substituents R, R and R.
- Aminoalkylsiloxanes in the above formula, in which R represents a siloxane group, are obtained, for example, by the condensation of the compounds mentioned with themselves with the escape of alcohol or by the condensation of the compounds mentioned with SiOH-functionalized linear or branched polysiloxanes.
- aminoalkylsilanes can also be used.
- the amount of the aminoalkyl siloxanes used according to the invention in the composition according to the invention is preferably at least about 0.1% by weight, more preferably at least about 0.2% by weight.
- the maximum is about 30% by weight, preferably about 20% by weight, so that the following preferred ranges result: from 0.1% by weight to 30% by weight, more preferably from 0.2% by weight to 20 % By weight, in each case based on the total amount of the composition according to the invention.
- the phosphoric acid esters and their salts used according to the invention are preferably selected from mono-, di- or triorthophosphoric acid esters and polyphosphoric acid esters and their salts.
- the mono-, di- or triorthophosphoric acid esters are preferably those of the formula:
- R 17 is selected from the group consisting of: linear or branched and optionally substituted C 1 -C 3 Q alkyl groups, linear or branched, C 5 -C 5 cycloalkyl groups, C 6 -C 5 - Aryl groups, C 6 -C 3 alkylaryl groups, linear or branched C 2 -C 30 alkenyl groups or linear or branched C 3 -C alkoxy (C 1 -C 30 ) alkyl groups, polyalkenyloxy groups (polyether), triorganylsilyl and diorganyl (C ⁇ - C 30 ) alkoxy silyl groups.
- p 1 or 2.
- tin-containing catalyst please refer to the explanations below regarding the tin-containing catalyst.
- the phosphoric acid esters can react with bases to form salts.
- bases can react with these salts.
- Acidic phosphoric acid esters and / or acidic phosphoric acid ester salts are preferred.
- Acidic phosphoric ester salts also close. non-stoichiometric reaction products of phosphoric esters with bases.
- Bases that can be used in the reaction of the acidic phosphoric acid esters include, for example, hydroxides, oxides, carbonates of alkali and alkaline earth metals as well as ammonia and mono-, di- or trialkylamine and tetraalkyl and arylalkylammonium hydroxides.
- the aminoalkylsiloxanes used according to the invention can also react with the acidic phosphoric acid esters when the components are combined.
- Monophosphoric acid esters are preferred, including monobutyl,
- the amount of phosphoric acid esters used according to the invention in the polyorganosiloxane composition according to the invention is preferably at least about 0.05% by weight, more preferably at least about 1.0% by weight.
- the maximum is about 10.0% by weight, preferably about 6% by weight, so that the following preferred ranges can result: from 0.05% by weight to 10.0% by weight, more preferably from 1.0 % By weight to 6% by weight, in each case based on the total amount of the composition according to the invention.
- the amount of the phosphoric acid ester in the polyorganosiloxane composition according to the invention is further preferably 0.5 to 5 mol per mol of the tin-containing catalyst or the titanium chelate catalyst.
- Component d) of the composition according to the invention is at least one tin-containing catalyst or at least one titanium chelate catalyst.
- the tin-containing catalyst is preferably an organotin compound. It is particularly preferably at least one organic tin compound of the formula
- R 6 is selected from the group consisting of linear or branched optionally substituted C 1 -C 3 o -alkyl groups, C 5 -Ci 4 cycloalkyl groups or C 6 -C 4 aryl groups, Triorganylsilyl- and diorganyl (-C-C 3 o) alkoxysilyl groups and if a plurality of substituents R 6 is present, these may be the same or different from one another, and Y is selected from the group consisting of halogen, -OR 7 , -OC (O) R 8 , -OH, -SR 9 , -NR 10 2 , -NHR 11 , -OSiR 12 3 . -OSi (OR 13 ) 3 ,
- R to R are each independently selected from optionally substituted C ⁇ -C 8 alkyl, Coe-Cw-Arvl- and / or C 2 -C 8 alkenyl, and / or compounds of the general formulas R 14 2 SnY ', R 1 3 SnY' ⁇ / and / or R 16 SnY ' 3 2 , wherein R 14 ' R 1 and R 1 are each independently selected from the
- the linear or branched optionally substituted C 1 -C 30 -alkyl groups mentioned in the definition of the above-mentioned organic tin compounds include those with 1 to 30 carbon atoms, such as, for example, methyl, ethyl, chloroethyl, n-propyl, isopropyl, n- Butyl, isobutyl, pentyl, hexyl, heptyl, ethylhexyl, octyl, decyl, undecyl, dodecyl, tridecyl, etc. Butyl, hexyl or octyl is preferred.
- the C 5 -C 5 -cycloalkyl groups mentioned in the definition of the above-mentioned organic tin compounds include mono- or polycyclic alkyl groups, such as, for example, cyclopentyl, cyclohexyl, cyclohexylethyl cyclooctyl, decalinyl, hydrindanyl, bicyclo [2.2.1] heptanyl, bicyclo [2.2. 2] octanyl, bicyclo [4.2.3] nonyl etc.
- C 6 -Ci4 aryl groups include, for example. Phenyl and naphthenyl, fluorenyl groups. Examples of C 6 -C 31 alkylaryl groups are tolyl, xylyl, 2,4-di-tert-butylphenyl groups.
- C 2 -C 30 alkenyl groups include vinyl, allyl, octenyl, cyclohexenylethyl, nombomenyl. Examples of C) -C 3 o-alkoxy (C ⁇ - C 3 ö) alkyl groups are methoxy or nonyloxy substituted ethyl, butyl or hexyl groups.
- Polyalkenyloxy groups (polyethers) representatively represent ethyl, nonyl or stearyl mono-terminated polyethyleneoxy groups with a degree of polymerization of 3-20.
- tin compounds are dioctyltin oxide, dibutyltin oxide, dimethyltin oxide,
- Dioctyltin dilaurate, dioctyldibutoxystannan and / or tributylethoxystannan Dioctyltin dilaurate, dioctyldibutoxystannan and / or tributylethoxystannan.
- reaction products of the organotin compounds described above with one or more silicic acid esters, polysilicic acid esters, organylalkoxysilane and / or their partial hydrolysates can be used as tin-containing catalysts.
- the amount of the tin-containing catalyst in the polyorganosiloxane composition according to the invention is preferably at least about 0.2% by weight, more preferably at least about 0.3% by weight.
- the maximum is about 5% by weight, preferably about 4% by weight, so that the following preferred ranges result: from 0.2% by weight to 5% by weight, more preferably from 0.3 % By weight to 4% by weight, in each case based on the total amount of the composition according to the invention.
- titanium chelate catalysts which can be used according to the invention are known per se and are described, for example, in US 4,680,364, US 3,689,454, US 3,334,067, DE 19 507 416 and US 4,438,039.
- the amount of the tin-containing catalyst or the titanium chelate catalyst in the polyorganosiloxane composition according to the invention is preferably at least about 0.2% by weight, more preferably at least about 0.3% by weight.
- the maximum amount is about 5% by weight, preferably about 4% by weight, so that the following preferred ranges result: from 0.2% by weight to 5% by weight, more preferably from 0.3% by weight to 4 % By weight, in each case based on the total amount of the composition according to the invention.
- Tin-containing catalysts are preferably used as component d) of the composition according to the invention.
- the polyorganosiloxane composition according to the invention has as
- Component f 0.05 to 2% by weight, based on 100% by weight of the composition, of at least one compound selected from the group consisting of an isocyanurate of the formula
- R, R ⁇ and R can be identical or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the substituents R 22 , R 23 and R 24 is a trisalkoxysilylalkyl group, a cyanurate of the formula
- R ", R” and R may be the same or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the substituents R 25 , R 26 and R 27 is a trisalkoxysilylalkyl group, and condensation products with Si-O-Si bonds of the abovementioned isocyanurates and cyanurates and mixtures thereof.
- the substituent groups R to R are selected from trisalkoxysilylalkyl and / or alkenyl. At least one of the above
- 27 R is a trisalkoxysilylalkyl group, more preferred are all of them
- Substituent groups R to R or R to R trisalkoxysilylalkyl groups.
- Trisalkoxysilylalkyl preferably includes groups of the formula - (CH 2 ) z Si (OR 2 :, ) 3 , in which the substituents R can be identical or different from one another and each independently represent a C 1 -C 4 -alkyl radical, and z is an integer from 3 to 8, preferably 3.
- C 1 -C 4 -alkyl radicals include straight-chain or branched alkyl radicals having 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl and tert-butyl. Methyl or ethyl are preferred.
- Trisalkoxysilyl functions under the action of water and elimination of alcohols with formation of the Si-O-Si bonds.
- Tris [3- (trialkoxysilyl) alkyl] isocyanurates are tris [3- (trimethoxy- or ethoxysilyl) propyl] isocyanurates and their condensates.
- Preferred tris [3- (trialkoxysilyl) alkyl] cyanurates are tris [3- (trimethoxy- or ethoxysilyl) propyl] cyanurates and their condensates.
- the concentration of component f) is preferably at least about 0.05
- % By weight, more preferably at least about 0.2% by weight.
- the concentration is preferably at most about 1.6% by weight, more preferably at most about 1% by weight, in each case based on 100% by weight of the composition. This results in preferred ranges in particular of 0.05 to 1.6% by weight, particularly preferably 0.2 to 1% by weight, in each case based on 100% by weight of the composition.
- components a) to f) can be added to the polyorganosiloxane composition of the invention.
- these are in particular: g) optionally a filler, h) optionally an auxiliary, such as, for example, non-crosslinkable
- Siloxanes adhesives, fungicides, solvents, organic dyes,
- Fillers include, for example: amorphous or crystalline, reinforcing or non-reinforcing silica, silicates, oxides, carbonates.
- amorphous or crystalline reinforcing or non-reinforcing silica, silicates, oxides, carbonates.
- pyrogenic hydrophobic or hydrophilic silicas with BET surface areas of 90 to 400 m / g are particularly suitable.
- the polyorganosiloxane composition of the invention preferably contains: a) 30 to 99.3% by weight of at least one crosslinkable
- Polyorganosiloxane b) 0.3 to 10% by weight of at least one alkoxysilane / siloxane crosslinker, c) 0.05 to 10% by weight of at least one phosphoric acid ester, d) 0.2 to 5% by weight of at least one tin-containing catalyst or at least one Ti-chelate-containing catalyst, e) 0.1 to 30% by weight of at least one aminoalkylsiloxane,
- BESTATIGUNGSKOPIE f 0.05 to 2% by weight, based on 100% by weight of the composition, of at least one compound selected from the group consisting of an isocyanurate of the formula
- R ", R” and R may be the same or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the substituents R 22 , R 23 and R 24 one
- Trisalkoxysilylalkyl is a cyanurate of the formula
- R, R and R may be the same or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the substituents R ", R and R is a trisalkoxysilylalkyl group , and condensation products with Si-O-Si bonds of the abovementioned isocyanurates and cyanurates and their mixtures, g) 0 to 60% by weight of a filler, h) 0 to 50% by weight of an auxiliary, selected from non-crosslinkable siloxanes, adhesives, fungicides, solvents and / or pigments.
- composition of the invention can advantageously be combined by first combining components a), b) and c) and the rest
- Embodiment can be combined a) with e) or e) + c) before adding b), followed by g), h) and then d) and f).
- Components g) and h) are preferably added to the mixture of a), b) and c) next, and finally components e) and d) and finally f) are added to the mixture thus obtained.
- component a) is a polyorganoalkoxysiloxane
- c) and d) can also be added to the mixture of a) and b) in the form of a reaction product prepared beforehand after combining components a) and b).
- IK masses can be produced step by step in a batch process or continuously with the help of extruders.
- the compositions according to the invention can be stable or flowable.
- the invention further relates to the composition obtainable by vulcanizing the polyorganosiloxane composition of the invention.
- Vulcanizing in the context of the invention means curing
- the process for vulcanizing the polyorganosiloxane composition of the invention is generally characterized in that the polyorganosiloxane composition of the invention is allowed to come into contact with water at a temperature of 0 to 120 ° C.
- Water here means all types of water, in particular the entry of atmospheric moisture when processing the polyorganosiloxane composition in a manner known per se.
- the invention is usually carried out in contact with a substrate.
- the invention therefore also relates to the composite material obtained by vulcanizing the polyorganosiloxane composition on a substrate.
- Suitable substrates include, for example, those made of metal, metal oxides, glass, plastics, powder coatings or resins and ceramics.
- Plastics include, for example: PVC, polystyrene, polyamides, acrylic butadienes, polyesters, polycarbonates, urethanes and acrylates.
- the polyorganosiloxane composition of the invention is particularly preferably applied to polyacrylates, in particular polymethyl methacrylate.
- the polyorganosiloxane composition of the invention is preferably used as a joint sealant, adhesive, coating material or molded article.
- the invention further relates to the use of a polyorganosiloxane composition which contains 0.05 to 2% by weight of at least one compound selected from the group consisting of an isocyanurate of the formula
- R, R and R can be identical or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the substituents R 22 , R 23 and R 24 is a trisalkoxysilylalkyl group,
- R, R "and R can be identical or different from one another and are each independently selected from the group consisting of trisalkoxysilylalkyl and alkenyl, with the proviso that at least one of the
- Substituents R ", R and R ⁇ is a trisalkoxysilylalkyl group, and contains condensation products with Si-O-Si bonds of the abovementioned isocyanurates and cyanurates and their mixtures, based on the total amount of the polyorganosiloxane composition, for use on polymethyl methacrylate substrates.
- the transparent, organically neutral vulcanizing polyorganosiloxane compositions were prepared in the order given below in a 1 liter planetary mixer (e.g. from Drais), in accordance with the examples listed below.
- the individual components were mixed at intervals of 5 min at temperatures between 25-50 ° C under dried nitrogen. After completion of the preparation, the mixture was freed of trapped gas bubbles by continuing to stir under a slight vacuum.
- the siloxane compositions were then filled into airtightly sealable plastic cartridges made of HDPE with an average wall thickness of 1.2 mm at room temperature and, if necessary, stored as indicated in order to make them available for the comparative studies
- a silicone rubber blend was made according to the following formulation.
- Formulation A 1) 56.2 parts by weight of a ⁇ Z /? / J ⁇ , o / 7zegfl-hydroxyl-terminated
- hydrophobic silica which was drawn from Degussa-Hüls under the name Aerosil® R 972.
- ABS Acrylonitrile butadiene styrene
- Lexan® Thermoclear, polycarbonate (PC), PMMA-6, 1/100 coated
- Plexiglas® polymethyl methacrylate (PMMA), cast 7.8 / 100 Plexiglas®, polymethyl methacrylate (PMMA), extruded 7.9 / 100 Plexiglas® XT Resist 21, PMMA, Röhm 6.1 / 100 Plexiglas®, XT Resist 31, PMMA, Röhm 7.4 / 100 Plexiglas®, XT Resist 41, PMMA, Röhm 6.6 / 100 Plexiglas®, SDP 16, PMMA, Röhm 8.1 / 100
- silicone rubber mixtures according to formulation A were furthermore produced, but which instead of 0.2 parts by weight of tris [3- (trimethoxysilyl) propyl] isocyanurate contain 0.2 parts by weight of another adhesive (Table 2). These formulations are designated C, D, E, F, G, H, I and J.
- Examples 1A and IB are removed from the cartridges after a storage period of 15 months at 23 ° C. (room temperature).
- a 4 mm thick test plate is formed on a glass plate by spreading with a doctor blade, stored for 3 days in a standard atmosphere (room temperature, 50% relative air humidity) and allowed to crosslink under these conditions.
- Example 1A While the mass from Example 1A completely hardens under the influence of ambient air (standard climate), the mass from Example IB remains plastic or tacky uncrosslinked. Even after a storage period of 18 months at 23 ° C., the mass from Example 1A crosslinked completely as a 4 mm thick test plate for 3 days in a standard atmosphere to form an elastomeric molded body.
- component f not only improves the adhesion, but also extends the storage time for the silicone rubber mixture according to the invention.
- Table 2 Adhesives used
- Acceptable ASTM C-794 adhesion values are defined by the fact that the quotient of force per path is> 2.6 N-mm "1 with CF (cohesive failure)> 90%.
- CF means the percentage area of the substrate on which after the As can be seen in Table 3, only formulation A (use of 0.2 part by weight of tris [3- (trimethoxysilyl) propyl] isocyanurate) shows adhesion immediately after vulcanization and without the use of primers Plexiglas® (polymethyl methacrylate, extruded).
- Table 3 Adhesion tests of the MTMS test series
- Formulation 14 days curing, 14 days curing / 3 days water
- RTV-IK silicone rubber mixtures which were based on the formulations from Comparative Example 1 but contained 2.9 parts by weight of methyltrimethoxysilane (VMSO) instead of 2.9 parts by weight of methyltrimethoxysilane (MTMS), were prepared.
- VMSO methyltrimethoxysilane
- MTMS methyltrimethoxysilane
- Formulation 14 days curing, 14 days curing / 3 days water
- silicone rubber mixtures with different parts by weight of the tris [3- (trimethoxysilyl) propyl] isocyanurate were prepared.
- the isocyanurate was varied from 0.05 to 3.50 parts by weight, the adhesion of the resulting RTV-IK mixtures to extruded PMMA was tested and their hardening was checked.
- a 4 mm thick sample skin was pulled out on a glass plate and after one day of curing in a standard climate (room temperature, 50% relative air humidity) the hardening on the underside of the skin was checked. The sample skin was considered fully hardened if the underside was neither sticky nor plastic.
- Table 5 The results are shown in Table 5.
- BESTATIGUNGSKOPIE Reduce the maximum possible adhesion of the hardened material on Plexiglas® (polymethyl methacrylate, extruded). From 1.60 parts by weight, insufficient hardening and a whitish discoloration of the materials are also observed.
- a silicone rubber mixture according to Example 1 was produced with the modification that 0.2 part by weight of tris [3- (trimethoxysilyl) propyl] isocyanurate corresponding to variant B was omitted.
- the resulting RTV-IK mass shows no liability neither on PMMA in Table 3 nor on the following substrates:
- a silicone rubber mixture according to Comparative Example 2A i.e. with the modification that the basic mixture for Examples 2 was prepared without 0.2 parts by weight of tris [3- (trimethoxysilyl) propyl] isocyanurate corresponding to 2B.
- the resulting RTV-IK mass shows no liability neither on PMMA in Tab. 4 nor on the following substrates:
- Lexan® Thermoclear, polycarbonate (PC), PMMA-coated 5.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Sealing Material Composition (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50205517T DE50205517D1 (de) | 2001-01-26 | 2002-01-24 | Polyorganosiloxan-zusammensetzung |
EP02719722A EP1368428B1 (de) | 2001-01-26 | 2002-01-24 | Polyorganosiloxan-zusammensetzung |
AU2002250850A AU2002250850B2 (en) | 2001-01-26 | 2002-01-24 | Polyorganosiloxane composition |
JP2002563242A JP4717324B2 (ja) | 2001-01-26 | 2002-01-24 | ポリオルガノシロキサン組成物 |
US10/470,138 US7211330B2 (en) | 2001-01-26 | 2002-01-24 | Polyorganosiloxane composition |
HK04107482A HK1064690A1 (en) | 2001-01-26 | 2004-09-28 | Polyorganosiloxane composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10103421.0 | 2001-01-26 | ||
DE10103421A DE10103421A1 (de) | 2001-01-26 | 2001-01-26 | Polyorganosiloxan-Zusammensetzung |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2002062897A2 true WO2002062897A2 (de) | 2002-08-15 |
WO2002062897A3 WO2002062897A3 (de) | 2002-10-24 |
WO2002062897A8 WO2002062897A8 (de) | 2004-03-04 |
Family
ID=7671782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/000718 WO2002062897A2 (de) | 2001-01-26 | 2002-01-24 | Polyorganosiloxan-zusammensetzung |
Country Status (10)
Country | Link |
---|---|
US (1) | US7211330B2 (de) |
EP (1) | EP1368428B1 (de) |
JP (1) | JP4717324B2 (de) |
CN (1) | CN1219827C (de) |
AT (1) | ATE315064T1 (de) |
AU (1) | AU2002250850B2 (de) |
DE (2) | DE10103421A1 (de) |
ES (1) | ES2256455T3 (de) |
HK (1) | HK1064690A1 (de) |
WO (1) | WO2002062897A2 (de) |
Cited By (1)
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CN104293279A (zh) * | 2014-09-26 | 2015-01-21 | 无锡市天力五金弹簧厂 | 一种制造防霉型有机硅密封胶的原料及其工艺 |
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US8053159B2 (en) | 2003-11-18 | 2011-11-08 | Honeywell International Inc. | Antireflective coatings for via fill and photolithography applications and methods of preparation thereof |
US7905950B2 (en) * | 2004-08-26 | 2011-03-15 | Idemitsu Kosan Co., Ltd. | Coating composition and resin multilayer body |
JP4646122B2 (ja) * | 2005-06-30 | 2011-03-09 | 信越化学工業株式会社 | 剥離フィルム用シリコーン組成物 |
US7888447B2 (en) * | 2007-03-29 | 2011-02-15 | Sabic Innovative Plastics Ip B.V. | Polycarbonate-polysiloxane copolymers, methods for the preparation thereof, and articles derived therefrom |
US8557877B2 (en) | 2009-06-10 | 2013-10-15 | Honeywell International Inc. | Anti-reflective coatings for optically transparent substrates |
US8864898B2 (en) | 2011-05-31 | 2014-10-21 | Honeywell International Inc. | Coating formulations for optical elements |
WO2016167892A1 (en) | 2015-04-13 | 2016-10-20 | Honeywell International Inc. | Polysiloxane formulations and coatings for optoelectronic applications |
DE102015216598A1 (de) * | 2015-08-31 | 2017-03-02 | Wacker Chemie Ag | Verfahren zur Herstellung von Organyloxygruppen aufweisenden Organosiliciumverbindungen |
EP3269785A1 (de) * | 2016-07-13 | 2018-01-17 | Nitrochemie Aschau GmbH | Zusammensetzung für silikonkautschukmassen |
CN109666447A (zh) * | 2019-01-16 | 2019-04-23 | 江西奋发科技有限公司 | 一种单组份脱醇型硅橡胶密封剂及其制备方法 |
CN113773501B (zh) * | 2021-09-08 | 2023-03-24 | 广东致格纳米科技有限公司 | 一种可固化硅基杂化树脂的制备方法 |
CN115181273B (zh) * | 2022-08-25 | 2023-03-24 | 江西天永诚高分子材料有限公司 | 一种脱醇型室温硫化硅橡胶及其制备方法 |
CN116217934A (zh) * | 2022-12-27 | 2023-06-06 | 湖北环宇化工有限公司 | 一种螯合有机锡催化剂及其在耐储存脱醇型rtv-1硅橡胶中的应用 |
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-
2001
- 2001-01-26 DE DE10103421A patent/DE10103421A1/de not_active Withdrawn
-
2002
- 2002-01-24 DE DE50205517T patent/DE50205517D1/de not_active Expired - Lifetime
- 2002-01-24 CN CNB028071662A patent/CN1219827C/zh not_active Expired - Lifetime
- 2002-01-24 ES ES02719722T patent/ES2256455T3/es not_active Expired - Lifetime
- 2002-01-24 EP EP02719722A patent/EP1368428B1/de not_active Expired - Lifetime
- 2002-01-24 JP JP2002563242A patent/JP4717324B2/ja not_active Expired - Lifetime
- 2002-01-24 AU AU2002250850A patent/AU2002250850B2/en not_active Ceased
- 2002-01-24 AT AT02719722T patent/ATE315064T1/de not_active IP Right Cessation
- 2002-01-24 US US10/470,138 patent/US7211330B2/en not_active Expired - Lifetime
- 2002-01-24 WO PCT/EP2002/000718 patent/WO2002062897A2/de active IP Right Grant
-
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CN104293279A (zh) * | 2014-09-26 | 2015-01-21 | 无锡市天力五金弹簧厂 | 一种制造防霉型有机硅密封胶的原料及其工艺 |
Also Published As
Publication number | Publication date |
---|---|
JP4717324B2 (ja) | 2011-07-06 |
AU2002250850B2 (en) | 2008-01-24 |
WO2002062897A8 (de) | 2004-03-04 |
ES2256455T3 (es) | 2006-07-16 |
DE10103421A1 (de) | 2002-08-14 |
CN1498249A (zh) | 2004-05-19 |
HK1064690A1 (en) | 2005-02-04 |
EP1368428B1 (de) | 2006-01-04 |
DE50205517D1 (de) | 2006-03-30 |
US20040122197A1 (en) | 2004-06-24 |
ATE315064T1 (de) | 2006-02-15 |
WO2002062897A3 (de) | 2002-10-24 |
US7211330B2 (en) | 2007-05-01 |
JP2004520471A (ja) | 2004-07-08 |
EP1368428A2 (de) | 2003-12-10 |
CN1219827C (zh) | 2005-09-21 |
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