Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-06-22
1998-09-15
Tsang, Cecilia J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525507, 525508, 525534, B41M 5136
Patent
active
058079335
ABSTRACT:
A carboxyl-containing phenolic resin represented by the formula: ##STR1## where n is 0 to 100, the phenolic units of the resin being directly bonded to one another through positions ortho or para to the OZ group; Z is selected from the group consisting of H and the residue of a mono or dianhydride, said mono or dianhydride having been reacted with a hydroxy group of a phenolic resin; and Y is present at a position meta or para to the OZ group and is selected from the group consisting of an alkyl group, a halogen atom, an aryl group, a phenylalkyl group, an alkyl group, a carboxyl group of the formula--COOR where R is H, an alkyl group or a phenylalkyl group, an alkoxy group, an aryloxy group, and an amino group of the formula--NR.sub.1 R.sub.2 where R.sub.1 and R.sub.2 are the same or different and represent H or an alkyl group.
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Delaney Patrick R.
The Mead Corporation
Tsang Cecilia J.
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