Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-06-10
1993-01-05
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525313, 526 71, 526 80, 526 73, 526 87, 526340, C08F 218, C08F21208
Patent
active
051771535
ABSTRACT:
A suspension polymerization process for the preparation of a polymeric material formed from at least two monomers, a non-gaseous monomer and a gaseous monomer. The composition of the beads or particles of the polymeric material is controlled by adding gaseous monomer to the vapor phase after polymerization of about 5% to about 90% by weight of the non-gaseous monomer or by removing a portion or substantially all of the gaseous monomer in the vapor phase before polymerization of about 70% by weight of the gaseous monomer in the aqueous suspension, or a combination thereof.
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Dale William J.
Drappel Stephan
Liebermann George
McNeil Daniel M.
Ro Nam S.
Soong Zosan S.
Teskin Fred
Xerox Corporation
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