Process for preparing sticky polymers

Details Process for preparing sticky polymers Process for preparing sticky polymers

1985-01-04

1986-08-05

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

264 22, 264338, 524714, 524733, 524745, 522 18, 522 84, 522 82, 522 72, 522173, 522175, 522180, 522182, 522183, 526 62, 526200, 526217, 526287, 5263031, 526319, 526310, 5263297, 526341, 526342, 526920, 528486, C08F 246, C08F 248, C08F 210

Patent

active

046044116

ABSTRACT:
An improved process for preparing a sticky water-soluble polymer, e.g. acrylamide polymers and acrylic acid polymers, which comprises polymerizing an aqueous solution of a monomer in a polymerization vessel of which the surface contacting the aqueous monomer solution is covered with a tetrafluoroethylene-ethylene copolymer film, whereby the stickiness of the produced polymer to the vessel is remarkably decreased, namely the peelability of the polymer from the vessel is remarkably improved, and moreover the polymerization conversion is remarkably improved. Also, the use of a metal deposited tetrafluoroethylene-ethylene copolymer film as a covering material improves the efficiency of a photopolymerization and enables to use a polymerization vessel made of an inexpensive material.

REFERENCES:
patent: 2468664 (1949-04-01), Hanford et al.
patent: 3951600 (1976-04-01), Asano et al.
patent: 4005157 (1977-01-01), Mattiussi et al.
patent: 4331787 (1982-05-01), Fairchok et al.
Schlanger et al., Modern Plastics Encyclopedia (Agranoff, J. (ed.)), McGraw-Hill, N.Y., p. 31 (1980).

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