Thixotropic binder system for thixotropic coating compositions

Details Thixotropic binder system for thixotropic coating compositions Thixotropic binder system for thixotropic coating compositions

1990-10-23

1992-11-17

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08L 7502

Patent

active

051644495

ABSTRACT:
A film-forming thixotropic binder system for imparting sag resistance to coating compositions comprising the product obtained by reacting an isocyanate preferably having a molecular weight of at least 400 and comprising more than two isocyanate groups (preferably an isocyanurate trimer obtained from di-isocyanates) with a polyamine and optionally a monoamine in the presence of a film-forming carboxylic acid copolymer having an acid value of at least 25 mg KOH/g copolymer. The binder composition may be neutralized by alkali to produce a salt soluble in an aqueous coating composition. Also detailed processes for making the binder system.

REFERENCES:
patent: 4165329 (1979-08-01), Dreher et al.
patent: 4311622 (1982-01-01), Buter
patent: 4677028 (1987-06-01), Heeringa et al.
patent: 4882408 (1989-11-01), Blum

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