Conjugated diene butyl

Details Conjugated diene butyl Conjugated diene butyl

1974-04-30

1976-06-22

Holler, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 795C, 260888, 526 20, 526 30, 526 49, 526 47, 526 56, 526339, C08L 900, C08L 4700, C08F27902, C08K 510

Patent

active

039652130

ABSTRACT:
Dehydrohalogenation of halogenated butyl to produce a butyl rubber having conjugated double bonds in the linear backbone. The composition is disclosed as having the predominant structure: ##EQU1## where n + 1 represent the number of isoolefin units incorporated in the butyl rubber polymer backbone, and m represents the number of conjugated diolefin units present, substantially as isolated units. The composition is prepared by contacting a solution of halogenated butyl rubber with: (1) a soluble metal carboxylate, where the metal is selected from the metals of Groups Ib, IIb, IVa and VIII of the Periodic Table; (2) a soluble carboxylic acid; and (3) an oxide or hydroxide of a metal selected from the metals of Groups Ia or IIa of the Periodic Table.

REFERENCES:
patent: 3816371 (1974-06-01), Baldwin et al.

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