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US 7,842,394 B2Granted
Paper release compositions having improved adhesion to paper and polymeric films
AssigneeMomentive Performance Materials Inc.
InventorsRoy Melvin Griswold, Richard Paul Eckberg, Slawomir Rubinsztajn, Stanislaw Slomkowski, Anna Kowalewska, Stanislaw Sosnowski
Life of this patent
Estimating the term…
Abstract
The present invention relates to curable alkenyl based silicone release coating compositions having improved adhesion to paper and polymeric substrates. Furthermore the present invention relates to the process for making a silicone release coating with improved adhesion to paper and polymeric substrates.
Claims53
A solvent-free release coating comprising
- (A) an additive for anchorage of a release coating, said additive being a compound of the general formula:
- (RaSiO(4-a)/2)n
- where n is an integer ranging from 56 to 93, a ranges from about 1 to about 3, R is independently selected from the group consisting of:
- oxirane containing radicals having from one to forty carbon atoms, epoxide containing radicals having from one to forty carbon atoms, monovalent hydrocarbon radicals, monovalent hydrocarbonoxy radicals, and hydride atoms, wherein at least one of said oxirane or epoxide containing radicals are present per molecule, and wherein at least one of said hydride atoms are present per molecule;
- (B) a curable alkenyl silicone having the formula
- MViaTbDcMd
- where
- MVi=R13-pR2pSiO1/2, where R1 is selected from the group consisting of one to forty carbon monovalent hydrocarbon radicals and R2 is selected from the group consisting of two to forty carbon atom terminal olefinic monovalent hydrocarbon radicals, where p ranges from 1 to 3;
- T=R3SiO3/2 where R3 is selected from the group consisting of R1 and R2;
- D=R4R5SiO2/2, where R4 and R5 are each independently selected from the group consisting of R1 and R2;
- and
- M=R13SiO1/2 where each R1 is as previously defined and is independently selected;
- wherein a and b have values ranging from 2 to 5, c is an integer ranging from about 50 to about 1,000 and d has a value ranging from 2 to about 0.5.
10 more elements
A solvent-free coating comprising
- (A) additives for anchorage of a release coating, said additives being a compound of the general formula:
- (RaSiO(4-a)/2)n
- where n is an integer ranging from 56 to 93, a is from 1 to 3, R is independently selected from the group consisting of:
- oxirane containing radicals having from one to forty carbon atoms, epoxide containing radicals having from one to forty carbon atoms, monovalent hydrocarbon radicals, monovalent hydrocarbonoxy radicals, and hydride atoms, wherein at least one of said oxirane or epoxide containing radicals are present per molecule, and wherein at least one of said hydride atoms are present per molecule;
- (B) an alkenyl silicone having the formula
- MViaTbDcMd
- where
- MVi=R13-pR2pSiO1/2, where R1 is selected from the group consisting of one to forty carbon monovalent hydrocarbon radicals and R2 is selected from the group consisting of two to forty carbon atom olefinic monovalent hydrocarbon radicals, where p ranges from 1 to 3;
- T=R3SiO3/2 where R3 is selected from the group consisting of R1 and R2;
- D=R4R5SiO2/2 where R4 and R5 are each independently selected from the group consisting of R1 and R2;
- and
- M=R13SiO1/2 where each R1 is as previously defined and is independently selected;
- wherein a and b have values ranging from 2 to 5, c is an integer ranging from about 50 to about 1,000 and d has a value ranging from 0 to about 0.5;
- (C) a hydrogen siloxane selected from the group of compounds;
- MDeD′fM,
- MD′fM,
- MDeD′fM′,
- M′DeD′fM, and
- M′DeM′, where
- M=R′3SiO1/2,
- M′=HgR′3-gSiO1/2, and
- D=R′R′SiO2/2, and
- D′=R′HSiO2/2 wherein each R′ in M, M′, D, and D′ is independently selected from the group consisting of one to forty carbon monovalent hydrocarbon radicals wherein the subscripts e and f may be zero or positive whereby the sum of e and r ranges from about 10 to about 100 subject to the limitation that the sum of f and g is two or greater;
- (D) a hydrosilylation catalyst;
- and
- (E) an inhibitor.
23 more elements
A solvent-free release coating comprising
- (A) additives for anchorage of a release coating, said additives being a compound of the general formula:
- (RaSiO(4-a)/2)n
- where n is an integer ranging from 56 to 93, a is from 1 to 3, R is independently selected from the group consisting of:
- carboxylic acid anhydride containing radical having from one to forty carbon atoms, monovalent hydrocarbon radicals, monovalent hydrocarbonoxy radicals, and hydride atoms, wherein at least one of said carboxylic acid anhydride containing radicals are present per molecule, and wherein at least one of said hydride atoms are present per molecule;
- (B) an alkenyl silicone having the formula
- MViaTbDcMd
- where
- MVi=R13-pR2pSiO1/2, where R1 is selected from the group consisting of one to forty carbon monovalent hydrocarbon radicals and R2 is selected from the group consisting of two to forty carbon atom olefinic monovalent hydrocarbon radicals, where p ranges from 1 to 3;
- T=R3SiO3/2 where R3 is selected from the group consisting of R1 and R2;
- D=R4R5SiO2/2 where R4 and R5 are each independently selected from the group consisting of R1 and R2;
- and
- M=R13SiO1/2 where each R1 is as previously defined and is independently selected;
- wherein a and b have values ranging from 2 to 5, c is an integer ranging from about 50 to about 1,000 and d has a value ranging from 0 to about 0.5;
- (C) a hydrogen siloxane selected from the group of compounds:
- MDeD'fM,
- MD′fM,
- MDeD′fM′,
- M′DeD′fM, and
- M′DeM′, where
- M=R′3SiO1/2,
- M′=HgR′3-gSiO1/2, and
- D=R′R′SiO2/2, and
- D′=R′HSiO2/2 wherein each R′ in M, M′, D, and D′ is independently selected from the group consisting of one to forty carbon monovalent hydrocarbon radicals wherein the subscripts e and f may be zero or positive whereby the sum of e and f ranges from about 10 to about 100 subject to the limitation that the sum off and g is two or greater;
- (D) a hydrosilylation catalyst;
- and
- (E) an inhibitor.
23 more elements
A solvent-free coating comprising
- (A) additives for anchorage of a release coating, said additive being a compound of the general formula:
- (RaSiO(4-a)/2)n
- where n is an integer ranging from 56 to 93, a is from 1 to 3, R is independently selected from the group consisting of:
- carboxylic acid anhydride containing radicals having from one to forty carbon atoms, monovalent hydrocarbon radicals, monovalent hydrocarbonoxy radicals, and hydride atoms, wherein at least one of said carboxylic acid anhydride containing radicals are present per molecule, and wherein at least one of said hydride atoms are present per molecule;
- (B) a curable alkenyl silicone having the formula
- MViaTbDcMd
- where
- MVi=R13-pR2pSiO1/2, where R1 is selected from the group consisting of one to forty carbon monovalent hydrocarbon radicals and R2 is selected from the group consisting of two to forty carbon atom terminal olefinic monovalent hydrocarbon radicals, where p ranges from 1 to 3;
- T=R3RSiO3/2 where R3 is selected from the group consisting of R1 and R2;
- D=R4R5SiO2/2 where R4 and R5 are each independently selected from the group consisting of R1 and R2;
- and
- M=R13SiO1/2 where each R1 is as previously defined and is independently selected;
- wherein a and b have values ranging from 2 to 5, c is an integer ranging from about 50 to about 1,000 and d has a value ranging from 0 to about 0.5.
10 more elements
Dependencies are inferred from the claim text.