Production of maleic anhydride modified butyl rubber and use...

Details Production of maleic anhydride modified butyl rubber and use... Production of maleic anhydride modified butyl rubber and use...

2005-08-16

2005-08-16

Seidleck, James J. (Department: 1711)

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

Synthetic resins

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

C525S285000, C525S327600

Reexamination Certificate

active

06930153

ABSTRACT:
A method for producing maleic anhydride modified butyl rubber comprising reacting a halogenated butyl rubber with maleic anhydride in the presence of (i) an acid acceptor and (ii) a monofunctional hindered amine and/or monofunctional hindered phenol; which is useful for further, modifying by a nitrogen-containing heterocyclic compound to form the modified butyl rubber having the improved processability.

REFERENCES:
patent: 4208491 (1980-06-01), Gardner
patent: 5852135 (1998-12-01), Kanai et al.
patent: S53-042289 (1978-04-01), None
patent: S48-090385 (1978-11-01), None
patent: S59-084901 (1984-05-01), None
patent: H03-131643 (1991-06-01), None

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