Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-09-17
1994-02-15
Nutter, Nathan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525351, 525353, 525355, 525356, 525357, 525358, 5253591, C08C 1912, C08F 818
Patent
active
052868044
ABSTRACT:
A process for halogenating star-branched butyl rubber is provided wherein water and a wetting agent or wetting agent precursor are added to a solution comprising the star-branched butyl rubber, solid particles of branching agent and an organic solvent prior to the neutralization step to increase the rate of neutralization of the hydrogen halide by-product of the halogenation reaction.
REFERENCES:
patent: 2732354 (1956-01-01), Morrissey et al.
patent: 2958667 (1960-11-01), Eby et al.
patent: 3099644 (1963-07-01), Parker et al.
patent: 4252918 (1981-02-01), Ikeda et al.
patent: 5077345 (1991-12-01), Newman et al.
Fusco James V.
McDonald, Jr. Michael F.
Powers Kenneth W.
Vanbrackle Hans F.
Wang Hsien C.
Cooney Jr. John M.
Exxon Chemical Patents Inc.
Kurtzman M. B.
Nutter Nathan M.
Schneider J. E.
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