Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1991-01-29
1991-12-24
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528183, 528271, 528215, 526318, 526271, 526272, 534556, C08G 7322, C07C11304
Patent
active
050754165
ABSTRACT:
A process for the preparation of an aromatic hydrocarbon resin modified with aromatic carboxylic acids comprising suspending methane sulfonic acid and at least one aromatic carboxylic acid in an aliphatic solvent and slowly proportioning at least one unsaturated aromatic hydrocarbon into the suspension under polymerization conditions and their salts.
REFERENCES:
patent: 4289678 (1981-09-01), Calder et al.
patent: 4482489 (1984-11-01), DiPippo
patent: 4598138 (1986-07-01), Lucke et al.
patent: 4772678 (1988-09-01), Sybert et al.
Friedrich Bodo
Spengler Hans
Staglich Peter
Zellerhoff Robert
Rutgerswerke AG
Truong Duc
Welsh Maurice J.
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