EP 0521934 A4 19930217 - COPOLYMERS OF MALEIC ANHYDRIDE AND ACRYLIC ACID USEFUL IN DENTURE ADHESIVES
Title (en)
COPOLYMERS OF MALEIC ANHYDRIDE AND ACRYLIC ACID USEFUL IN DENTURE ADHESIVES
Publication
Application
Priority
- US 50105990 A 19900329
- US 50561690 A 19900406
Abstract (en)
[origin: WO9114716A1] Slurry copolymerization of maleic anhydride with (meth)acrylic acid and, optionally, with C1-C4 alkyl vinyl ether in a cosolvent system of cyclohexane and ethyl acetate yields a pumpable slurry, from which uniform, fine, white powders having a predetermined weight average molecular weight of about 10,000 to one million, preferably about 30,000 to 400,000 are obtained. The copolymers are useful in a denture adhesive composition which is a mixed partial salt of the copolymer.
IPC 1-7
IPC 8 full level
A61K 6/00 (2006.01); C08F 2/04 (2006.01); C08F 2/06 (2006.01); C08F 20/02 (2006.01); C08F 220/06 (2006.01); C08F 220/10 (2006.01); C08F 220/18 (2006.01); C08F 222/06 (2006.01)
CPC (source: EP)
A61K 6/35 (2020.01); C08F 220/06 (2013.01)
Citation (search report)
- [Y] US 3741926 A 19730626 - JURECIC A
- [Y] EP 0328725 A2 19890823 - GOODRICH CO B F [US]
- [Y] EP 0106991 A1 19840502 - BASF AG [DE]
- [A] EP 0315015 A2 19890510 - BASF AG [DE]
- [A] US 4373036 A 19830208 - CHANG TIANG-SHING, et al
- [A] EP 0058073 A2 19820818 - PFIZER [US]
- See references of WO 9114716A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
WO 9114716 A1 19911003; AU 640474 B2 19930826; AU 7486491 A 19911021; CA 2079322 A1 19910930; EP 0521934 A1 19930113; EP 0521934 A4 19930217; JP H07500357 A 19950112
DOCDB simple family (application)
US 9101455 W 19910304; AU 7486491 A 19910304; CA 2079322 A 19910304; EP 91906377 A 19910304; JP 50613891 A 19910304