Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1977-02-16
1978-09-05
Levin, Stanford M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
260 296H, 260 296TA, 264 13, 424 33, 526263, 526264, 526303, 526312, 526317, 526320, 528483, 528499, 528502, C08F 622
Patent
active
041122151
ABSTRACT:
Powders of physiologically-tolerable copolymers of vinyl and vinylidene monomers, said copolymers being useful as fast-dissolving resin binders for the preparation of pharmaceutical coatings, having a residual monomer content of less than 0.05 percent by weight, and having a primary particle size less than one micron; a method of preparing such powders by spray drying an aqueous dispersion of a copolymer under non-sintering temperature conditions; a method for preparing solutions for coating orally-ingestible dosage unit forms with said copolymers; and such dosage unit forms coated with said copolymers.
REFERENCES:
patent: 2667473 (1954-01-01), Morner et al.
patent: 3365409 (1968-01-01), Lanthier
patent: 3753958 (1973-08-01), Wingler et al.
patent: 3787340 (1974-01-01), Labana et al.
patent: 3803111 (1974-04-01), Munro et al.
patent: 3925329 (1975-12-01), Heinrich et al.
Boessler Hanns
Rauch Hubert
Levin Stanford M.
Rohm GmbH
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