US5708075A — Silicone release coating compositions

Claim 1

Independent Claim 147 words

A curable silicone release coating composition comprising: (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) a linear organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (C) a siloxane resin having the formula (R 3 SiO 1/2 ) a (HR 2 SiO 1/2 ) b (SiO 4/2 ) c wherein R is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, a has a value of 1 to 25, b has a value of 2 to 10, c has a value of 1 to 50, and having a molar ratio of M units to Q units of from 0.6/1 to 4/1 wherein M denotes the monovalent (R 3 SiO 1/2 ) 2 units and the monovalent (HR 2 SiO 1/2 ) b units and Q denotes the tetravalent (SiO 4/2 ) c units; and (D) a platinum group metal-containing catalyst.

Claim 2

Dependent Claim 147 words

A curable silicone release coating composition comprising: (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) a linear organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (C) a siloxane resin having the formula (R 3 SiO 1/2 ) a (HR 2 SiO 1/2 ) b (SiO 4/2 ) c wherein R is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, a has a value of 1 to 25, b has a value of 2 to 10, c has a value of 1 to 50, and having a molar ratio of M units to Q units of from 0.6/1 to 4/1 wherein M denotes the monovalent (R 3 SiO 1/2 ) 2 units and the monovalent (HR 2 SiO 1/2 ) b units and Q denotes the tetravalent (SiO 4/2 ) c units; and (D) a platinum group metal-containing catalyst.

Claim 3

Dependent Claim 145 words

A composition according to claim 1, wherein (A) is an organopolysiloxane having its formula selected from the group consisting of ViMe 2 SiO(Me 2 SiO) x SiMe 2 Vi, Me 3 SiO(Me 2 SiO) x (MeViSiO) y SiMe 3 , Me 3 SiO(MeViSiO) y SiMe 3 , ViMe 2 SiO(Me 2 SiO) x (MeViSiO) y SiMe 2 Vi, ViMe 2 SiO(MeViSiO) y SiMe 2 Vi HexMe 2 SiO(Me 2 SiO) x SiMe 2 Hex, Me 3 SiO(Me 2 SiO) x (MeHexSiO) y SiMe 3 , Me 3 SiO(MeHexSiO) y SiMe 3 , HexMe 2 SiO(Me 2 SiO) x (MeHexSiO) y SiMe 2 Hex, and HexMe 2 SiO(MeHexSiO) y SiMe 2 Hex wherein Me, Vi, and Hex denote methyl, vinyl, and 5-hexenyl, respectively, x has a value of from greater than zero to 7000, and y has a value of from greater than zero to 350.

Claim 4

Dependent Claim 93 words

A composition according to claim 1, wherein (B) is a compound having its formula selected from the group consisting of HMe 2 SiO(Me 2 SiO) f (MeHSiO) g SiMe 2 H, HMe 2 SiO(Me 2 SiO) f SiMe 2 H, Me 3 SiO(Me 2 SiO) f (MeHSiO) g SiMe 3 , HMe 2 SiO(MeHSiO) g SiMe 2 H, and Me 3 SiO(MeHSiO) g SiMe 3 wherein Me denotes methyl wherein f has a value of from greater than zero to 1000 and g has a value of from greater than zero to 200.

Claim 5

Dependent Claim 15 words

A composition according to claim 1, wherein b has a value of 3 to 5.

Claim 6

Dependent Claim 23 words

A composition according to claim 1, wherein (C) has a molar ratio of M units to Q units of from 1/1 to 2/1.

Claim 7

Dependent Claim 42 words

A composition according to claim 1, wherein (D) is selected from the group consisting of chloroplatinic acid, alcohol modified chloroplatinic acids, olefin complexes of chloroplatinic acid, complexes of chloroplatinic acid and divinyltetramethyldisiloxane, fine platinum particles adsorbed on carbon carriers, and platinum black.

Claim 8

Dependent Claim 14 words

A composition according to claim 1, wherein the composition further comprises (E) an inhibitor.

Claim 9

Dependent Claim 27 words

A composition according to claim 7, wherein (E) is selected from the group consisting of maleates, fumarates, acetylenic alcohols, silylated acetylenic alcohols, conjugated ene-ynes, and cyclic siloxanes.

Claim 10

Dependent Claim 101 words

A composition according to claim 1, wherein the composition further comprises at least one ingredient selected from the group consisting of a siloxane resin consisting essentially of at least one R 3 3 SiO 1/2 (M) unit and at least one SiO 4/2 (Q) unit wherein R 3 is independently selected from the group consisting of a monovalent hydrocarbon group having from 1 to 10 carbon atoms and an alkenyl group having from 2 to 10 carbon atoms, and having a molar ratio of M units to Q units ranges from 0.4/1 to 4/1, a bath life extender, and a diluent.

Claim 11

Dependent Claim 92 words

A composition according to claim 9, wherein the siloxane resin is selected from the group consisting of a siloxane resin consisting essentially of: Me 3 SiO 1/2 (M) and SiO 4/2 (Q) units, a siloxane resin consisting essentially of: Me 2 ViSiO 1/2 (M) and SiO 4/2 (Q) units, and a siloxane resin consisting essentially of: Me 3 SiO 1/2 (M), Me 2 ViSiO 1/2 (M), and SiO 4/2 (Q) units, wherein Me denotes methyl, Vi denotes vinyl, and the molar ratio of M to Q units is from 0.6/1 to 1.9/1.

Claim 12

Dependent Claim 47 words

A composition according to claim 9, wherein the bath life extender is selected from the group consisting of compounds which contain 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 13

Dependent Claim 34 words

A composition according to claim 9, wherein the diluent is selected from the group consisting of pentane, hexane, heptane, octane, nonane, benzene, toluene, xylene, acetone, methylethyl ketone, and methylisobutyl ketone, trichloroethane, perchloroethylene, and bromobenzene.

Claim 14

Dependent Claim 153 words

A curable silicone release coating composition obtained by a method comprising (I) mixing: (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) a linear organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (C) a siloxane resin having the formula (R 3 SiO 1/2 ) a (HR 2 SiO 1/2 ) b (SiO 4/2 ) c wherein R is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, a has a value of 1 to 25, b has a value of 2 to 10, c has a value of 1 to 50, and having a molar ratio of M units to Q units of from 0.6/1 to 4/1 wherein M denotes the monovalent (R 3 SiO 1/2 ) a units and the monovalent (HR 2 SiO 1/2 ) b units and Q denotes the tetravalent (SiO 4/2 ) c units; and (D) a platinum group metal-containing catalyst.

Claim 15

Dependent Claim 153 words

A curable silicone release coating composition obtained by a method comprising (I) mixing: (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) a linear organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (C) a siloxane resin having the formula (R 3 SiO 1/2 ) a (HR 2 SiO 1/2 ) b (SiO 4/2 ) c wherein R is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, a has a value of 1 to 25, b has a value of 2 to 10, c has a value of 1 to 50, and having a molar ratio of M units to Q units of from 0.6/1 to 4/1 wherein M denotes the monovalent (R 3 SiO 1/2 ) a units and the monovalent (HR 2 SiO 1/2 ) b units and Q denotes the tetravalent (SiO 4/2 ) c units; and (D) a platinum group metal-containing catalyst.

Claim 16

Dependent Claim 145 words

A composition according to claim 13, wherein (A) is an organopolysiloxane having its formula selected from the group consisting of ViMe 2 SiO(Me 2 SiO) x SiMe 2 Vi, Me 3 SiO(Me 2 SiO) x (MeViSiO) y SiMe 3 , Me 3 SiO(MeViSiO) y SiMe 3 , ViMe 2 SiO(Me 2 SiO) x (MeViSiO) y SiMe 2 Vi, ViMe 2 SiO(MeViSiO) y SiMe 2 Vi HexMe 2 SiO(Me 2 SiO) x SiMe 2 Hex, Me 3 SiO(Me 2 SiO) x (MeHexSiO) y SiMe 3 , Me 3 SiO(MeHexSiO) y SiMe 3 , HexMe 2 SiO(Me 2 SiO) x (MeHexSiO) y SiMe 2 Hex, and HexMe 2 SiO(MeHexSiO) y SiMe 2 Hex wherein Me, Vi, and Hex denote methyl, vinyl, and 5-hexenyl, respectively, x has a value of from greater than 0 to 7000, and y has a value of from greater than 0 to 350.

Claim 17

Dependent Claim 93 words

A composition according to claim 13, wherein (B) is a compound having its formula selected from the group consisting of HMe 2 SiO(Me 2 SiO) d (MeHSiO) e SiMe 2 H, HMe 2 SiO(Me 2 SiO) d SiMe 2 H, Me 3 SiO(Me 2 SiO) d (MeHSiO) e SiMe 3 , HMe 2 SiO(MeHSiO) e SiMe 2 H, and Me 3 SiO(MeHSiO) e SiMe 3 wherein Me denotes methyl wherein d has a value of from greater than zero to 1000 and e has a value of from greater than zero to 200.

Claim 18

Dependent Claim 15 words

A composition according to claim 13, wherein b has a value of 3 to 5.

Claim 19

Dependent Claim 23 words

A composition according to claim 13, wherein (C) has a molar ratio of M units to Q units of from 1/1 to 2/1.

Claim 20

Dependent Claim 42 words

A composition according to claim 13, wherein (D) is selected from the group consisting of chloroplatinic acid, alcohol modified chloroplatinic acids, olefin complexes of chloroplatinic acid, complexes of chloroplatinic acid and divinyltetramethyldisiloxane, fine platinum particles adsorbed on carbon carriers, and platinum black.

Claim 21

Dependent Claim 18 words

A composition according to claim 13, wherein the method further comprises adding, during step (I), (E) an inhibitor.

Claim 22

Dependent Claim 27 words

A composition according to claim 19, wherein (E) is selected from the group consisting of maleates, fumarates, acetylenic alcohols, silylated acetylenic alcohols, conjugated ene-ynes, and cyclic siloxanes.

Claim 23

Dependent Claim 106 words

A composition according to claim 13, wherein the method further comprises adding, during step (I), at least one ingredient selected from the group consisting of a siloxane resin consisting essentially of at least one R 3 3 SiO 1/2 (M) unit and at least one SiO 4/2 (Q) unit wherein R 3 is independently selected from the group consisting of hydrogen, a monovalent hydrocarbon group having from 1 to 10 carbon atoms, and an alkenyl group having from 2 to 10 carbon atoms, and having a molar ratio of M Units to Q units ranges from 0.4/1 to 4/1, a bath life extender, and a diluent.

Claim 24

Dependent Claim 92 words

A composition according to claim 21, wherein the siloxane resin is selected from the group consisting of a siloxane resin consisting essentially of: Me 3 SiO 1/2 (M) and SiO 4/2 (Q) units, a siloxane resin consisting essentially of: Me 2 ViSiO 1/2 (M) and SiO 4/2 (Q) units, and a siloxane resin consisting essentially of: Me 3 SiO 1/2 (M), Me 2 ViSiO 1/2 (M), and SiO 4/2 (Q) units, wherein Me denotes methyl, Vi denotes vinyl, and the molar ratio of M to Q units is from 0.6/1 to 1.9/1.

Claim 25

Dependent Claim 47 words

A composition according to claim 21, wherein the bath life extender is selected from the group consisting of compounds which contain 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 26

Dependent Claim 34 words

A composition according to claim 21, wherein the diluent is selected from the group consisting of pentane, hexane, heptane, octane, nonane, benzene, toluene, xylene, acetone, methylethyl ketone, and methylisobutyl ketone, trichloroethane, perchloroethylene, and bromobenzene.

Claim 27

Dependent Claim 169 words

A coated substrate obtained by a method comprising (I) applying a curable silicone composition on the surface of a substrate wherein the curable silicone composition is obtained by mixing: (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) a linear organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (C) a siloxane resin having the formula (R 3 SiO 1/2 ) a (HR 2 SiO 1/2 ) b (SiO 4/2 ) c wherein R is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, a has a value of 1 to 25, b has a value of 2 to 10, c has a value of 1 to 50, and having a molar ratio of M units to Q units of from 0.6/1 to 4/1 wherein M denotes the monovalent (R 3 SiO 1/2 ) a units and the monovalent (HR 2 SiO 1/2 ) b units and Q denotes the tetravalent (SiO 4/2 ) c units; and (D) a platinum group metal-containing catalyst.

Claim 28

Dependent Claim 169 words

A coated substrate obtained by a method comprising (I) applying a curable silicone composition on the surface of a substrate wherein the curable silicone composition is obtained by mixing: (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) a linear organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (C) a siloxane resin having the formula (R 3 SiO 1/2 ) a (HR 2 SiO 1/2 ) b (SiO 4/2 ) c wherein R is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, a has a value of 1 to 25, b has a value of 2 to 10, c has a value of 1 to 50, and having a molar ratio of M units to Q units of from 0.6/1 to 4/1 wherein M denotes the monovalent (R 3 SiO 1/2 ) a units and the monovalent (HR 2 SiO 1/2 ) b units and Q denotes the tetravalent (SiO 4/2 ) c units; and (D) a platinum group metal-containing catalyst.

Claim 29

Dependent Claim 29 words

A coated substrate according to claim 25, wherein the method further comprises (II) exposing the coating and the substrate to heat in an amount sufficient to cure the coating.

Claim 30

Dependent Claim 24 words

A coated article according to claim 26, wherein the method further comprises applying a pressure sensitive adhesive on the coated substrate after step (II).

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2001-01-12	2001-07-14	2002-01-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2005-01-12	2005-07-14	2006-01-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2009-01-12	2009-07-14	2010-01-13	$7700.00	Window Closed / Lapsed

Silicone release coating compositions

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