Curable compositions comprising the hydrosilation product of olefin-containing polymers and organosiloxane hydrides, cured compositions made therefrom, and methods of making same
Assignee3M Innovative Properties Company
InventorsGary P. Roberts, Steven J. Vander Louw
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Abstract
The present invention provides curable compositions comprising the hydrosilation product of olefin-containing polymers and organosiloxane hydrides. The curable compositions may be cured to form low surface energy cured composition which may be suitable, for example, as antifouling coatings on substrates such as boat or ship hulls.
Claims48
A curable composition comprising the hydrosilation product of:
- (a) a polymer comprising a plurality of olefin groups and at least two organic functional groups;
- and
- (b) an organosiloxane monohydride having the structure illustrated in formula (4):
- wherein R4 has the structure illustrated in formula (5):
- wherein:
- n is about 10 or greater;
- R5 is a monovalent organic radical;
- and
- X is oxygen or a divalent organic linking group.
A curable composition comprising the hydrosilation product of:
- (a) a plurality of polymer molecules each molecule comprising a plurality of olefinic groups and at least two organic functional groups;
- and
- (b) a plurality of organosiloxane dihydride molecules having the structure illustrated in formula (6):
- wherein:
- n is about 200 or greater;
- R6 is independently selected from the group consisting of monovalent organic radicals, organosiloxane radicals and hydrogen with the proviso that at least two R6 groups are hydrogen;
- wherein the organosiloxane dihydride molecules react to crosslink the polymer molecules and wherein the curable composition comprises about 45% weight or greater silicone.
The cured composition of 27, wherein the curative is selected from the group consisting of water, polyfunctional isocyanates, polyols, polyamines, epoxies, olefins, and acetylenes.
A method of making a curable composition, said method comprising the steps of:
- (a) providing a plurality of polymer molecules each molecule comprising a plurality of olefin groups and at least two organic functional groups;
- (b) providing an plurality of organosiloxane monohydride molecules having the structure illustrated in formula (4):
- wherein R4 has the structure illustrated in formula (5):
- wherein
- n is about 200 or greater;
- R5 is a monovalent organic radical;
- and
- X is an oxygen atom or a divalent organic linking group;
- and
- (c) reacting the plurality of olefin groups of the polymer with the organosiloxane monohydride to form the curable composition.
A method of making a curable composition, said method comprising the steps of:
- (a) providing a plurality of polymer molecules each polymer molecule comprising a plurality of olefin groups and at least two organic functional groups;
- (b) providing a plurality of organosiloxane dihydride molecules having the structure illustrated in formula (6):
- wherein
- n is about 200 or greater;
- R6 is independently selected from the group consisting of monovalent organic radicals, organosiloxane radicals and hydrogen with the proviso that at least two R6 groups are hydrogen;
- (c) crosslinking the polymer molecules by reacting at least a portion of the olefin groups of the polymer molecule with at least a portion of the hydride groups of the organosiloxane dihydride to form a curable composition comprising about 45% weight or greater silicone.
Dependencies are inferred from the claim text.