Vinylidene fluoride polymer and process for producing the same

Details Vinylidene fluoride polymer and process for producing the same Vinylidene fluoride polymer and process for producing the same

2011-05-17

2011-05-17

Cheung, William K (Department: 1762)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S255000

Reexamination Certificate

active

07943707

ABSTRACT:
A monomer comprising vinylidene fluoride as a principal component is suspension-polymerized by supplying the monomer in division to a polymerization system containing a polymerization initiator at a pressure below a critical pressure Pcr (=4.38 MPa) of vinylidene fluoride and at a pressure above Pcr. As a result, a vinylidene fluoride polymer having excellent high-temperature coloring resistance and with remarkably less elution of organic matter and ionic components is produced, without using a specific halogenated hydrocarbon and without incurring troublesome labor and cost for recovery thereof.

REFERENCES:
patent: 3624064 (1971-11-01), Toyoda et al.
patent: 3780007 (1973-12-01), Stallings et al.
patent: 2002/0143103 (2002-10-01), Katsurao et al.
patent: 0 417 585 (1991-03-01), None
patent: 1 227 109 (2002-07-01), None
patent: 1 454 920 (2004-09-01), None
patent: 46-3588 (1971-01-01), None
patent: 46-14465 (1971-04-01), None
patent: 47-44032 (1972-11-01), None
patent: 62-104815 (1987-05-01), None
patent: 2002-220403 (2002-08-01), None
Supplementary European Search Report issued May 11, 2009 in corresponding European Application No. 05 80 9462.

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