Aqueous dehydrofluorination method

Details Aqueous dehydrofluorination method Aqueous dehydrofluorination method

1996-08-26

1998-03-31

Jagannathan, Vasu

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528488, 528489, 528499, 528502, 524544, 524545, 524546, 524462, 524463, 525199, 526255, C08F 826, C08F 614

Patent

active

057339813

ABSTRACT:
A method of dehydrofluorinating a fluoropolymer comprising the steps of: providing an fluoropolymer emulsion comprising water, a fluoropolymer, and substantially no organic solvent; adding to the fluoropolymer emulsion a basic compound, the base compound being added at a concentration and in an mount that does not result in coagulation of the fluoropolymer; and exposing the mixture of fluoropolymer emulsion and basic compound to reaction conditions sufficient to cause dehydrofluorination of the fluoropolymer.

REFERENCES:
patent: 3507844 (1970-04-01), Wood
patent: 3752789 (1973-08-01), Khan
patent: 4645799 (1987-02-01), Wachi et al.
patent: 4678842 (1987-07-01), Sandler
patent: 4718618 (1988-01-01), Ichizuka
patent: 4742126 (1988-05-01), Moggi et al.
patent: 4758618 (1988-07-01), Ito et al.
patent: 4946902 (1990-08-01), Bekiarian et al.
patent: 5180803 (1993-01-01), Gibbard
patent: 5285002 (1994-02-01), Grootaert
patent: 5367023 (1994-11-01), Caporiccio et al.
Kise et al., "Phase Transfer Catalysis is Dehydrofluorination of Poly(vinylidene Fluoride) by Aqueous Sodium Hydroxide Solutions," Journal of Polymer Science: Polymer Chemistry Edition, vol. 12, pp. 3443-3451, (1983).
Brewis et al., "Pretreatment of poly(vinyl fluoride) and poly(vinylidene fluoride) with potassium hydroxide," Int. J. Adhesion and Adhesives, vol. 16, No. 2, pp. 87-95 (1996).
George Odian, Principles of Polymerization, pp. 332-333 (2nd ed. 1981).
Kirk-Othmer Encyclopedia of Chemical Technology, vol. 8, pp. 990-1003 (4th ed. 1993).
Cirillo et al., "Fluoroelastomers: Reaction Products in Early Stages of Network Formation," Biological and Synthetic Polymer Networks, 255-265 (1988).

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