Water-soluble or water-dispersible (co) polymers of...

Details Water-soluble or water-dispersible (co) polymers of... Water-soluble or water-dispersible (co) polymers of...

2006-05-23

2006-05-23

Lipman, Bernard (Department: 1713)

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...

C525S059000, C526S202000

Reexamination Certificate

active

07049360

ABSTRACT:
The present invention relates to water-soluble or water-dispersible copolymers obtainable by free-radical polymerization ofa) 80 to 20% by weight of hydroxy-C1–C6-alkyl (meth)acrylate and, where appropriate, one or more compounds of the formula (A) or (B)with R1=H, C1–C6-alkyl,R2=H, CH3R3=C1–C24-alkylor mixtures thereofin the presence ofb) 20 to 80% by weight of polyvinyl alcohol (PVA) andc) where appropriate 0 to 20% by weight of other polymerizable compounds (C), a process for their preparation, and their use as coating agent, binder and/or film-forming excipient in pharmaceutical dosage forms.

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