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US 2004/0171745 A1Published application
Aqueous polyurearethanes dispersions using polyester glycol
AssigneeInvista North America S.A R.L.
InventorsYoung H. Kim, Michael O'Neill, Jiazhong Chen
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Abstract
Stable aqueous poly(urea/urethane) polymers and dispersions are made that do not require the inclusion of chain extenders, curing agents or crosslinking agents.
Claims8
An ionomeric urea/urethane polymer comprising (a) repeating units derived from an aliphatic polyester polyol, and (b) repeating units derived from a polyisocyanate,
- wherein the urea/urethane polymer contains less than about 2 mole percent of urea units described by the formula —R—N(R2)—C(O)—N(R2)—R1;
- wherein R is a C6-C20 aromatic hydrocarbon radical, R1 is a C1-C20 aliphatic hydrocarbon radical, and R2 is H or an amide group that is described by the formula C(O)—N(R2)—R—.
Dependencies are inferred from the claim text.