Emulsion polymer blend of a multi-stage latex and a non-film for

Details Emulsion polymer blend of a multi-stage latex and a non-film for Emulsion polymer blend of a multi-stage latex and a non-film for

1993-02-26

1994-05-03

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524501, 524504, 525902, C08J 303, C08L 5106

Patent

active

053088905

ABSTRACT:
This invention relates to a blend of at least two emulsion polymers. In particular, the emulsion polymer blend comprises from 95 to 40 percent by weight of at least one first latex and from 5 to 60 percent by weight of at least one second latex, wherein the first latex is multi-stage comprising from 95 to 50 percent by weight of at least one soft stage polymer having a Tg less than 50.degree. C. and from 5 to 50 percent by weight of at least one hard stage polymer having a Tg from about 20.degree. C. to about 160.degree. C., and wherein the second latex is not an ambient temperature film-forming polymer. The emulsion polymer blend of this invention can be used to formulate a variety of aqueous coating compositions, such as for example, paints, mastics, caulks, sealants, varnishes, floor polishes, and the like. The emulsion polymer blend of this invention is also useful for formulating an aqueous coating composition which is coalescent-free.

REFERENCES:
patent: 4385152 (1983-05-01), Boyack et al.
patent: 4567099 (1986-01-01), Van Gilder et al.

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