Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Reexamination Certificate
2005-10-18
2005-10-18
Wyrozebski, Katarzyna (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
C521S040000, C521S040500, C521S042000
Reexamination Certificate
active
06956065
ABSTRACT:
The invention relates to a method for devulcanizing a sulphur-cured rubber, which rubber contains a network of a polymer, which polymer has a main chain of carbon atoms, in which for the vulcanization per 40 carbon-carbon bonds in the main chain a maximum of 1 unsaturated carbon-carbon bond occurs, by heating the rubber in the presence of a devulcanizing agent. The devulcanizing agent is an amine compound.
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Patent Abstracts of Japan, English Abstract of JP 53-024322, published Sep. 12, 1979.
Furukawa et al., “Properties of old tyre rubber, and various factors that dominate the properties of regenerated rubber”, International Polymer Science and Technology, vol. 53, No. 8, 1980, pp. 32-37.
Noordermeer Jacobus W. M.
Van Der Does Leen
Van Duin Martin
Verbruggen Miriam A. L.
DSM IP Assets B.V.
Mayer Brown Rowe & Maw LLP
Wyrozebski Katarzyna
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