Silicone compositions comprising long chain .alpha.-acetylenic alcohol hydrosilylation inhibitors
AssigneeRhone-Poulenc Chimie
InventorsJean-Marc Frances, Robert S. Dordick, Andre Soldat
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Abstract
Stable curable silicone compositions, well suited for the deposition of release coatings onto a wide variety of substrates, for example paper or plastic films, comprise a hydrosilylation-curable polyorganosiloxane oil and/or at least one Si alkenylated organopolysiloxane resin and, optionally, at least one organohydrosiloxane resin, an SiH crosslinking agent therefor, a hydrosilylation-inhibiting amount of a long chain acetylenic alcohol, advantageously having a boiling point higher than 250.degree. C., and a catalytically effective amount of a hydrosilylation catalyst, e.g., platinum or a platinum compound/complex.
Claims30
A stable curable silicone composition, comprising a hydrosilylation-curable polyorganosiloxane and a crosslinking agent therefor, a hydrosilylation-inhibiting amount of a long chain acetylenic alcohol, and a catalytically effective amount of it hydrosilylation catalyst, said long chain acetylenic alcohol having the formula:
- R--(R')C(OH)--C.tbd.CH (I)
- in which R is a linear or branched alkyl radical or a phenyl radical, R' is H or a linear or branched alkyl radical or a phenyl radical, and further wherein the total number of carbon atoms contained in R and R' is at least 9 and at most 20.
A stable curable silicone composition, comprising a hydrosilylation-curable polyorganosiloxane and a crosslinking agent therefor, a hydrosilylation-inhibiting amount of a long chain acetylenic alcohol, and a catalytically effective amount of a hydrosilylation catalyst, said long chain alcohol having the formula:
- R--(R')C(OH)--C.tbd.CH (I)
- in which R is a linear or branched alkyl radical or a phenyl radical, R' is H or a linear or branched alkyl radical or a phenyl radical, wherein the total number of carbon atoms contained in R and R' is at least 9 and at most 20, said curable polyorganosiloxane comprising an alkenylated or alkenyloxyalkylenated polydiorganosiloxane oil and/or at least one Si alkenylated organopolysiloxane adhesion modifier resin, said crosslinking agent comprising at least one dihydrotetraorganodisiloxane and/or at least one polyorganohydrosiloxane, with the polysiloxane constituents being dispersed in an aqueous emulsion of a nonionic surfactant.
A stable curable silicone composition, comprising a hydrosilylation-curable polyorganosiloxane and a crosslinking agent therefor, a hydrosilylation-inhibiting amount of a long chain acetylenic alcohol, and a catalytically effective amount of a hydrosilylation catalyst, said long chain alcohol having the formula:
- R--(R')C(OH)--C.tbd.CH (I)
- in which R is a linear or branched alkyl radical or a phenyl radical, R' is H or a linear or branched alkyl radical or a phenyl radical, wherein the total number of carbon atoms contained in R and R' is at least 9 and at most 20, said curable polyorganosiloxane comprising an alkenylated or alkenyloxyalkylenated polydiorganosiloxane oil and/or at least one Si alkenylated organopolysiloxane adhesion modifier resin, said crosslinking agent comprising at least one dihydrotetraorganodisiloxane and/or at least one polyorganohydrosiloxane, wherein the composition further comprises an organic polymer latex.
A composition of matter comprising an alkenylated or alkenyloxyalkylenated polydiorganosiloxane oil and/or at least one Si alkenylated organopolysiloxane adhesion modifier resin, and a hydrosilylation-inhibiting amount of a long chain acetylenic alcohol having the formula:
- R--(R')C(OH)--C.tbd.CH (I)
- in which R is a linear or branched alkyl radical or a phenyl radical, R' is H or a linear or branched alkyl radical or a phenyl radical wherein the total number of carbon atom, contained in R and R' is at least 9 and at most 20.
A composition of matter comprising at least one dihydrotetraorganodisiloxane and/or at least one polyorganohydrosiloxane and/or at least one organohydropolysiloxane adhesion modifier resin, and a hydrosilylation-inhibiting amount of a long chain acetylenic alcohol having the formula:
- R--(R')C(OH)--C.tbd.CH (I)
- in which R is a linear or branched alkyl radical or a phenyl radical, R' is H or a linear or branched alkyl radical or a phenyl radical wherein the total number of carbon atoms contained in R and R' is at least 9 and at most 20.
A composition of matter comprising at least one Si alkenylated organopolysiloxane adhesion modifier resin and/or at least one organohydropolysiloxane adhesion modifier resin, and a hydrosilylation-inhibiting amount of a long chain acetylenic alcohol having the formula:
- R--(R'C(OH)--C.tbd.CH (I)
- in which R is a linear or branched alkyl radical or a phenyl radical R' is H or a linear or branched alkyl radical or a phenyl radical, wherein the total number of carbon atoms contained in R and R' is at least 9 and at most 20.
Dependencies are inferred from the claim text.