Method for extending the open time of an aqueous coating composi

Details Method for extending the open time of an aqueous coating composi Method for extending the open time of an aqueous coating composi

1992-10-13

1993-12-14

Welsh, Maurice J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524557, 524559, 524560, 524561, 524562, 524563, 524564, 524803, 524804, C08L 7504

Patent

active

052703800

ABSTRACT:
A method for extending the open time of an aqueous coating composition is provided. This method extends the time during which an aqueous coating can be applied or rebrushed without damaging the film. The open time improvement of this invention is useful for a variety of coatings including paints, stains, varnishes, adhesives, and inks. The aqueous coating composition contains a latex polymer and a modifying compound. More particularly, the latex polymer contains a first reactable group which is complementary to and reacts with a second reactable group in the modifying compound. The complementary reactable groups in the latex polymer and modifying compound provide ionic or covalent binding.

REFERENCES:
patent: 4647610 (1987-03-01), Sperry et al.
patent: 4923514 (1990-05-01), Brown
patent: 4952622 (1990-08-01), Chauvel et al.

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