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...
Patent
1990-09-20
1991-11-19
Schofer, Joseph L.
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...
5253276, C08L 3900
Patent
active
050667092
ABSTRACT:
This invention relates to superior bioadhesive compositions having time extended adhesive properties comprising a non-toxic carrier and a polymer having between about 45 and about 70 weight % of units having the structure ##STR1## between about 50 and about 30 weight % of units having the structure ##STR2## and 2 to 7 weight % of an amine salt containing a lactam functionally derived from A and/or B, wherein R is hydrogen, alkoxy, phenyl, carboxy or --N lactam having from 3 to 6 carbon atoms; R.sub.1 is C.sub.1 to C.sub.6 alkylene and R.sub.2 is C.sub.2 to C.sub.4 alkylene; said copolymer having a number average molecular weight of about 40,000 to about 500,000 and a relatively small particle size. The invention also relates to the method of synthesizing and using the above composition.
REFERENCES:
patent: 3061569 (1962-10-01), Stoner et al.
patent: 3736274 (1973-03-01), Schoenholz et al.
Chaudhuri Ratan K.
Gangadharan Balgopal
Haldar Rama K.
GAF Chemicals Corporation
Maue Marilyn J.
Schofer Joseph L.
Walker Alex H.
Ward Joshua J.
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