Aqueous polyurethane dispersions

Details Aqueous polyurethane dispersions Aqueous polyurethane dispersions

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) C08F 283/00 (2006.01) C08G 18/08 (2006.01) C08G 18/12 (2006.01) C08G 18/42 (2006.01) C08G 18/66 (2006.01) C09D 175/04 (2006.01) C09D 175/06 (2006.01)

Patent

CA 2136620

2136620 9324551 PCTABS00028 Aqueous polyurethane dispersion in which the polyurethane is made by chain-extension of a prepolymer, and optionally including another polymer (particularly acrylic), wherein the prepolymer incorporates a dimer acid-based polyesterpolyol and also a low molecular weight cycloaliphatic and/or aromatic polyol and/or polyacid and wherein any low molecular weight cycloaliphatic or aromatic polyol is incorporated as a component of the polyester polyol and/or is used as such in the prepolymer synthesis, and any low molecular weight cycloaliphatic or aromatic polyacid is only or substantially only used as such in the prepolymer synthesis.

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