Monomer-free polyvinyl acetate dispersions and method of making

Details Monomer-free polyvinyl acetate dispersions and method of making Monomer-free polyvinyl acetate dispersions and method of making

1998-05-22

2000-10-03

Yoon, Tae

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

Synthetic resins

Treating polymer containing material or treating a solid...

523331, 523340, 524803, C08J 305, C08J 312, C08L 2900

Patent

active

061275182

ABSTRACT:
Method of producing dry polyvinyl acetate particles that are readily dispersible in water, are vinyl acetate monomer free and are useful for making polyvinyl acetate dispersion compositions that are low in odor, form clear dried films and may be used in adhesives, sealants, caulks and coatings. The method includes manufacturing an aqueous, e.g. water, dispersion of polyvinyl acetate containing polyvinyl alcohol; drying to remove volatiles by converting the dispersion to dry form under controlled temperature conditions and redispersing the dried polyvinyl acetate particles in an aqueous medium to form a polyvinyl acetate dispersion that is substantially free of vinyl acetate monomer.

REFERENCES:
patent: 3563932 (1971-02-01), Varnagy et al.
patent: 4164489 (1979-08-01), Daniels et al.
patent: 5376703 (1994-12-01), Noelken et al.
patent: 5702828 (1997-12-01), Adler et al.

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