Vegetable Oil-Modified, Hydrophobic Polyurethane Dispersions

摘要

Aqueous hydrophobic polyurethane dispersions are made from urethane prepolymers derived from reacting constituents including at least one polyisocyanate, vegetable oil based saturated monoglycerides, non-isocyanate based urethane polyols prepared from polyamines and cyclic carbonates, at least one long-chain polymeric polyol or long-chain polyol from biorenewable resources, polyols with hydrophilic groups, optional polydimethysiloxane based polyols with hydroxyl functional groups terminated in one end and alkyl groups terminated in another end.

主权项

1. A vegetable oil modified polyurethane dispersion comprising a polyurethane prepolymer that is the product of the admixture of:
(A) at least one polyisocyanate; (B) at least one saturated monoglyceride (SMG) from a vegetable oil; (C) at least one long-chain polymeric polyol; (D) optionally at least one non-isocyanate based urethane polyol prepared from a polyamine and a cyclic carbonate; (E) optionally one polydimethylsiloxane polyol with hydroxyl functional groups; and (F) at least one polyol with hydrophilic and/or ionic groups.