Two-step process for the preparation of (co) polychloroprene

Details Two-step process for the preparation of (co) polychloroprene Two-step process for the preparation of (co) polychloroprene

1996-02-23

2000-03-07

Henderson, Christopher

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

526295, C08F 224, C08J 305, C08K 504

Patent

active

060341734

ABSTRACT:
The present invention relates to the preparation of (co)polychloroprene latex in water emulsion, in the presence of an emulsifying system which comprises a first step (A) wherein a fraction f.sub.1 of monomers is used together with an emulsifying system which comprises a non-carboxylic ionic emulsifying agent (Ea1), a non-ionic emulsifying agent with a low HLB (Eb1) and a non-ionic emulsifying agent with a high HLB (Eb2), and a second step (B) wherein the reaction medium of step (A) is fed with the remaining fraction f.sub.2 of (co)monomers and the remaining emulsifying system.

REFERENCES:
patent: 3838141 (1974-09-01), Turner
patent: 5322886 (1994-06-01), Sauterey

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