Patent US5545831A successfully refreshed from Google Patents.
US5545831A
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US
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Silicone compositions for the formation of cured release coatings
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1994-10-19
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Granted: 1996-08-13
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Expires: 2014-10-19
Abstract
Abstract The present invention relates to a silicone composition comprising (A) a silicone release coating composition and (B) an organosilicon compound having the general formula <IMAGE> where R1 is a monovalent hydrocarbon group, R2 is an alkylene group, R3 is a hydrogen atom, an alkenyl group, or a hydroxyl group, m has a value of zero or greater, and n has a value of greater than zero which cures to form a release coating. The silicone release coating compositions of this invention give a cured release coating which exhibits optimal release values against lucky substances and which does not impair the residual adhesion of tacky substances.
Inventors
- 👤 Nobuo Kaiya
- 👤 Hideki Kobayashi
- 👤 Wataru Nishiumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:05
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/14; C09D183/04
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
103 words
A composition comprising: (A) a silicone release coating composition; and (B) an organosilicon compound having the general formula: ##STR15## wherein R 1 is selected from a monovalent hydrocarbon group having from 1 to 10 carbon atoms and free of aliphatic unsaturation or halogen-substituted alkyl groups, R 2 denotes an alkylene group having from 2 to 10 carbon atoms, R 3 is selected from the group consisting of a hydrogen atom, an alkenyl group having from 2 to 10 carbon atoms, and a hydroxyl group, m has a value of zero or greater than zero, and n has a value of greater than zero.
Claim 2
Dependent Claim
103 words
A composition comprising: (A) a silicone release coating composition; and (B) an organosilicon compound having the general formula: ##STR15## wherein R 1 is selected from a monovalent hydrocarbon group having from 1 to 10 carbon atoms and free of aliphatic unsaturation or halogen-substituted alkyl groups, R 2 denotes an alkylene group having from 2 to 10 carbon atoms, R 3 is selected from the group consisting of a hydrogen atom, an alkenyl group having from 2 to 10 carbon atoms, and a hydroxyl group, m has a value of zero or greater than zero, and n has a value of greater than zero.
Claim 3
Dependent Claim
43 words
A composition according to claim 1, wherein (A) is selected from the group consisting of an addition reaction-curing silicone release coating composition, a condensation reaction-curing silicone release coating composition, an organoperoxide-curing silicone release coating composition, and a radiation curing silicone release coating composition.
Claim 4
Dependent Claim
85 words
A composition according to claim 2, wherein (A) is an addition-reaction curing silicone release coating composition comprising: (i) 100 weight parts of an organopolysiloxane having at least 2 alkenyl groups per molecule and having a viscosity of at least 40 centipoise at 25° C.; (ii) 0.5 to 90 weight parts organopolysiloxane having at least 2 silicon-bonded hydrogen atoms per molecule and having a viscosity of from 1 to 1,000 centipoise at 25° C.; and (iii) a catalytic quantity of a metal catalyst or complex thereof.
Claim 5
Dependent Claim
91 words
A composition according to claim 2, wherein (A) is a condensation-reaction curing silicone release coating composition comprising: (a) 100 weight parts of an organopolysiloxane having at least 2 silicon-bonded hydroxyl groups per molecule and having a viscosity of at least 40 centipoise at 25° C.; (b) 0.5 to 90 weight parts of an organopolysiloxane having at least 2 silicon-bonded hydrogen atoms per molecule and having a viscosity of from 1 to 1,000 centipoise at 25° C.; and (c) 0.01 to 20 weight parts of a metal salt of an organic acid.
Claim 6
Dependent Claim
40 words
A composition according to claim 3, wherein (i) is selected from the group consisting of dimethylvinylsiloxy-endblocked dimethylpolysiloxanes, dimethylvinylsiloxy-endblocked dimethylsiloxane-methylvinylsiloxane copolymers, dimethylvinylsiloxy-endblocked dimethylsiloxane-methylphenylsiloxane copolymers, trimethylsiloxy-endblocked methylvinylpolysiloxanes, trimethylsiloxy-endblocked dimethylsiloxane-methylvinylsiloxane copolymers, trimethylsiloxy-endblocked dimethylsiloxane-methyl(5-hexenyl)siloxane copolymers, dimethylvinylsiloxy-endblocked dimethylsiloxane-methylvinylsiloxane-methylphenylsiloxane copolymers, dimethylhydroxysiloxy-endblocked methylvinylpolysiloxanes, and dimethylhydroxysiloxy-endblocked dimethylsiloxane-methylvinylsiloxane copolymers.
Claim 7
Dependent Claim
31 words
A composition according to claim 3, wherein (ii) is selected from the group consisting of trimethylsiloxy-endblocked methylhydrogenpolysiloxanes, trimethylsiloxy-endblocked dimethylsiloxane-methylhydrogensiloxane copolymers, dimethylhydrogensiloxy-endblocked dimethylpolysiloxanes, dimethylhydrogensiloxy-endblocked dimethylsiloxane-methylhydrogensiloxane copolymers, cyclic methylhydrogenpolysiloxanes, and cyclic methylhydrogensiloxane-dimethylsiloxane copolymers.
Claim 8
Dependent Claim
44 words
A composition according to claim 3, wherein (iii) is selected from the group consisting of chloroplatinic acid, alcohol solutions of chloroplatinic acid, chloroplatinic acid-olefin complexes, chloroplatinic acid/vinylsiloxane complexes, chloroplatinic acid/ketone complexes, platinum supported on alumina micropowder, platinum supported on silica micropowder, and platinum black.
Claim 9
Dependent Claim
13 words
A composition according to claim 3, wherein the composition further comprises an inhibitor.
Claim 10
Dependent Claim
23 words
A composition according to claim 8, wherein the inhibitor is selected from the group consisting of acetylenic alcohols, conjugated ene-ynes, maleates, and fumarates.
Claim 11
Dependent Claim
26 words
A composition according to claim 8, wherein the inhibitor is selected from the group consisting of 3-methyl-1-butyn-3-ol, 3,5-dimethyl-1-hexyn-3-ol, 3-methyl-1-pentyn-3-ol, phenylbutynol, 3-methyl-3-penten-1-yne 3,5-dimethyl-1-hexyn-3-ene, benzotriazole, and methylvinylsiloxane cyclics.
Claim 12
Dependent Claim
15 words
A composition according to claim 8, wherein the composition further comprises a bath life extender.
Claim 13
Dependent Claim
46 words
A composition according to claim 11, wherein the bath life extender is selected from the group consisting of compounds having one or more primary or secondary alcohol groups, carboxylic acids, compounds which yield carboxylic acids when exposed to water at room temperature, cyclic ethers, and water.
Claim 14
Dependent Claim
33 words
A composition according to claim 4, wherein (a) is selected from the group consisting of dimethylhydroxysiloxy-endblocked dimethylpolysiloxanes, dimethylhydroxysiloxy-endblocked dimethylsiloxane-methylvinylsiloxane copolymers, dimethylhydroxysiloxy-endblocked dimethylsiloxane-methylphenylsiloxane copolymers, dimethylhydroxysiloxy-endblocked methylvinylpolysiloxanes, dimethylhydroxysiloxy-endblocked methylphenylpolysiloxanes, dimethylhydroxysiloxy-endblocked dimethylsiloxane-methyl(5-hexenyl)siloxane copolymers, and dimethylhydroxysiloxy-endblocked methylphenylpolysiloxanes.
Claim 15
Dependent Claim
31 words
A composition according to claim 4, wherein (b) is selected from the group consisting of trimethylsiloxy-endblocked methylhydrogenpolysiloxanes, trimethylsiloxy-endblocked dimethylsiloxane-methylhydrogensiloxane copolymers, dimethylhydrogensiloxy-endblocked dimethylpolysiloxanes, dimethylhydrogensiloxy-endblocked dimethylsiloxane-methylhydrogensiloxane copolymers, cyclic methylhydrogenpolysiloxanes, and cyclic methylhydrogensiloxane-dimethylsiloxane copolymers.
Claim 16
Dependent Claim
30 words
A composition according to claim 4, wherein (c) is selected from the group consisting of dibutylin diacetate, dibutylin dioctoate, dibutylin dilaurate, dioctyltin dilaurate, tin octoate, zinc naphthoate, and iron octoate.
Claim 17
Dependent Claim
37 words
A composition according to claim 8, wherein the composition further comprises an organic solvent, selected from the group consisting of benzene, toluene, xylene, pentane, hexane, heptane, trichloroethylene, perchloroethylene, trifluoromethylbenzene, 1,3-bis(trifluoromethyl)benzene, methylpentafluorobenzene, ethyl acetate, and methyl ethyl ketone.
Claim 18
Dependent Claim
37 words
A composition according to claim 11, wherein the composition further comprises an organic solvent selected from the group consisting of benzene, toluene, xylene, pentane, hexane, heptane, trichloroethylene, perchloroethylene, trifluoromethylbenzene, 1,3-bis(trifluoromethyl)benzene, methylpentafluorobenzene, ethyl acetate, and methyl ethyl ketone.
Claim 19
Dependent Claim
37 words
A composition according to claim 4, wherein the composition further comprises an organic solvent selected from the group consisting of benzene, toluene, xylene, pentane, hexane, heptane, trichloroethylene, perchloroethylene, trifluoromethylbenzene, 1,3-bis(trifluoromethyl)benzene, methylpentafluorobenzene, ethyl acetate, and methyl ethyl ketone.
Claim 20
Dependent Claim
30 words
A composition according to claim 1, wherein R 1 is selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, octyl, phenyl, tolyl, xylyl, benzyl, phenethyl, 3-chloropropyl, and 3,3,3-trifluoropropyl.
Claim 21
Dependent Claim
23 words
A composition according to claim 1, wherein R 2 is selected from the group consisting of ethylene, propylene, butylene, pentylene, hexylene, and octylene.
Claim 22
Dependent Claim
23 words
A composition according to claim 1, wherein R 3 is selected from the group consisting of vinyl, allyl, butenyl, pentenyl, hexenyl, and octenyl.
Claim 23
Dependent Claim
33 words
A composition according to claim 1, wherein (B) is a compound having its formula selected from the group consisting of: ##STR16## wherein x and y both have a value of greater than zero.
References Cited (Backward Citations)
US3527659A
Cited
US4123604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-13 | 2000-02-12 | 2000-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-13 | 2004-02-12 | 2004-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-13 | 2008-02-12 | 2008-08-13 | $7700.00 | Window Closed / Lapsed |