Polymerization of fluoroolefins in presence of non-volatile poly

Details Polymerization of fluoroolefins in presence of non-volatile poly Polymerization of fluoroolefins in presence of non-volatile poly

1989-08-28

1991-05-28

Teskin, Fred

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

Synthetic resins

Removing and recycling removed material from an ongoing...

526 67, 526 70, 526 88, 526231, 526242, 526247, 526249, 526255, 526919, 525263, 525276, C08F 234, C08F 1418

Patent

active

050196324

ABSTRACT:
A free-radical initiated process for preparing fluorinated polymers wherein at least one gaseous fluoroolefin is polymerized in a stirred polymerizer, the improvement comprising preparing a non-volatile polymeric seed in a reaction zone separate from the polymerizer by decomposing initiator in the presence of fluoromonomer to form oligomeric free radicals and condensing said radicals onto previously prepared polymer; and conveying said non-volatile seed to the polymerizer.

REFERENCES:
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patent: 3592802 (1971-07-01), Scoggins et al.
patent: 4012573 (1977-03-01), Trieschmann et al.
patent: 4525547 (1985-06-01), Kato et al.
patent: 4535136 (1985-08-01), Wheland
patent: 4588796 (1986-05-01), Wheland

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