Chlorosulfonated propylene/olefin elastomers

Details Chlorosulfonated propylene/olefin elastomers Chlorosulfonated propylene/olefin elastomers

2008-03-12

2009-06-23

Rábago, Roberto (Department: 1796)

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

Synthetic resins

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

C525S343000, C525S344000, C525S353000, C525S355000, C525S356000, C525S383000

Reexamination Certificate

active

07550538

ABSTRACT:
Chlorosulfonated propylene/olefin elastomers containing 0.5-55 weight percent chlorine and 0.15 to 5 weight percent sulfur are prepared from metallocene catalyzed propylene/olefin copolymer base resins having a ratio of Mw/Mn less than 3.5 and a copolymerized propylene content of 70-98 weight percent.

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U.S. Appl. No. 12/075,647, filed Mar. 13, 2008, Ennis et al.
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T. Huff and B. H. Johnson, The Preparation of Crystalline Polypropylene Sodium Sulfonates and Their Interaction with an Included Sodium Hydroxide Phase, Journal of Applied Polymer Science, 1973, pp. 553-564, vol. 17, John Wiley & Sons, Inc., USA.
Chemical Abstracts Service, Japanese Patent Application Kokai 52013540, published Feb. 1, 1977.

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