Method of making siloxane-based polyamide elastomers
First Claim
1. A method of making a siloxane-based polyamide elastomer comprising heating and reacting an organic amide with a hydride functional polyorganosiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide elastomer;
- the hydride functional polyorganosiloxane being a polymer or copolymer having a formula selected from the group consisting of wherein R1 represents (i) an alkyl group containing 1-20 carbon atoms;
(ii) an aryl group;
(iii) an alkaryl group;
or (iv) an aralkyl group; and
(v) n and m each have a value of 1-1,000.
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Abstract
Siloxane-based polyamide elastomers can be prepared by heating a reaction mixture containing an olefinic acid and an organic amine to form an organic amide, and reacting the organic amide with a hydride functional polyorganosiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide elastomer. The hydride functional polyorganosiloxane contains at least one pendant hydrogen. The elastomers are useful additives in personal care products and can be applied to the hair, the skin, or the underarm. They can also be used to modify thermoplastic nylons, and for treating woven and non-woven textiles, such as air bags, carpeting, and apparel.
21 Citations
16 Claims
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1. A method of making a siloxane-based polyamide elastomer comprising heating and reacting an organic amide with a hydride functional polyorganosiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide elastomer;
- the hydride functional polyorganosiloxane being a polymer or copolymer having a formula selected from the group consisting of
wherein R1 represents (i) an alkyl group containing 1-20 carbon atoms;
(ii) an aryl group;
(iii) an alkaryl group;
or (iv) an aralkyl group; and
(v) n and m each have a value of 1-1,000.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- the hydride functional polyorganosiloxane being a polymer or copolymer having a formula selected from the group consisting of
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9. A method of making a siloxane-based polyamide elastomer comprising heating and reacting (i) an organic amide with (ii) a hydride functional polyorganosiloxane, in the presence of (iii) a solvent, and (iv) a hydrosilylation catalyst, to form the siloxane-based polyamide elastomer;
- the hydride functional polyorganosiloxane being a polymer or copolymer having a formula selected from the group consisting of
wherein R1 represents (i) an alkyl group containing 1-20 carbon atoms;
(ii) an aryl group;
(iii) an alkaryl group;
or (iv) an aralkyl group; and
(v) n and m each have a value of 1-1,000.- View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- the hydride functional polyorganosiloxane being a polymer or copolymer having a formula selected from the group consisting of
Specification