Redispersible powder composed of n-vinylpyrrolidone/vinyl acetat

Details Redispersible powder composed of n-vinylpyrrolidone/vinyl acetat Redispersible powder composed of n-vinylpyrrolidone/vinyl acetat

1994-09-19

1995-06-20

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526208, 526210, 526225, 526264, C08F 208

Patent

active

054261635

ABSTRACT:
A process for preparing a free-flowing redispersible powder composed of a vinyl-pyrrolidone/vinyl acetate copolymer containing 15-40% by weight of vinylpyrrolidone units wherein the mixture of the monomers is copolymerized in organic solution, the resulting solution is, after addition of a surfactant, subjected to replacement of the solvent by water, and the resulting dispersion is spray- or freeze-dried, and the use of the redispersible powder for producing paints and coating compositions, glues and adhesives and, in particular, the matrix and/or coating of solid slow-release pharma-ceutical forms and of hair-spray formulations are described.

REFERENCES:
patent: 3244658 (1966-04-01), Grosser et al.
patent: 3691125 (1972-09-01), Barabas et al.
patent: 4053696 (1977-10-01), Herrle et al.
patent: 4167439 (1979-09-01), Killam
patent: 4182851 (1980-01-01), Straub et al.
patent: 4520179 (1985-05-01), Barabas et al.
patent: 4906701 (1990-03-01), Clark, Jr.
patent: 5077040 (1991-12-01), Bergmann et al.
patent: 5122582 (1992-06-01), Potthoff-Karl et al.

Affiliated with

Also associated with

Rating

Redispersible powder composed of n-vinylpyrrolidone/vinyl acetat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Redispersible powder composed of n-vinylpyrrolidone/vinyl acetat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Redispersible powder composed of n-vinylpyrrolidone/vinyl acetat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1844820