CPC C08G 18/792 (2013.01) [C08G 18/73 (2013.01); C08K 5/17 (2013.01); C08K 5/521 (2013.01); C08K 5/5313 (2013.01); C08K 5/5333 (2013.01); C09D 175/04 (2013.01)] | 16 Claims |
1. A method comprising:
adding at least one additive into a polyisocyanate mixture comprising at least one solvent, and reducing flocculation and/or precipitation in the polyisocyanate mixture,
wherein the additive comprises a salt of:
(A1) at least one phosphorus-containing acidic compound selected from the group consisting of
(A1a) a mono- and/or di-C1 to C18 alkyl phosphate,
(A1b) a mono- and/or di-C1 to C18 alkyl phosphonate,
(A1c) a mono-C1 to C12 alkyl phosphinate, and
(A1d) an alkyl derivative of a phosphorus-containing diacid, and
(A2) at least one open-chain trisubstituted amine;
wherein the at least one additive is used in a concentration of 200 to 300 ppm by weight based on the polyisocyanate.
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