Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1987-04-02
1989-01-31
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525534, 525535, C08G 1000, C08G 7523, C08G 6538
Patent
active
048016578
ABSTRACT:
Two step process for preparing high molecular weight, high melting polyarylethers by polycondensing an alkyl-substituted dihydric phenol and an aromatic dihalide, and thereafter dealkylating the polycondensation product.
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Anderson Harold D.
E. I. Du Pont de Nemours and Company
Krass Frederick
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