Process to improve chemical and oxidative stability of hydrogena

Details Process to improve chemical and oxidative stability of hydrogena Process to improve chemical and oxidative stability of hydrogena

1995-06-27

1997-01-28

Lipman, Bernard

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

Synthetic resins

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

5253329, 5253331, 5253332, 525343, 525379, 525385, C08F 834

Patent

active

055978754

ABSTRACT:
This invention describes chemical modifications of hydrogenated polymers, particularly thermoplastic elastomers, e.g., Kraton.RTM. G, to increase the chemical resistance thereof. The number of residual reactive unsaturated diene-based mid-blocks were reduced through a post-hydrogenation reaction with an alkyl phenyl ether, e.g., anisole. The anisolated thermoplastic elastomer was then further reacted with benzenesulfonylation and nitration reactions to produce even more useful derivatives thereof.

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patent: 5416168 (1995-05-01), Willis et al.
patent: 5418296 (1995-05-01), Willis et al.
patent: 5521255 (1996-05-01), Roy

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