Patent · US Expired

Novel process

US5075416A · kind A · utility

3Cited by

4References

9Claims

0Family size

Assignee

Rutgerswerke Aktiengesellschaft · DE

Inventors

Peter Staglich · Duisburg, DE
Bodo Friedrich · Duisburg, DE
Hans Spengler · Halle, BE
Robert Zellerhoff · Hamminkeln, DE

Key dates

Filing date	Jan 29, 1991
Grant date	Dec 24, 1991
Priority date	—
Expiry date	Jan 29, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F240/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.