Polydodecenamers as reinforcing resins for elastomers
AssigneeChemische Werke Huls Aktiengesellschaft
InventorsHorst Haag, Karl-Heinz Nordsiek, Roland Streck, Dieter Zerpner
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Abstract
The properties of elastomeric vulcanizates are improved by compounding an elastomer prior to vulcanization with a polydodecenamer reinforcing resin derived from cyclododecene and cyclododecadiene and vulcanizing the compounded elastomer.
Claims14
A method for improving the properties of elastomeric vulcanizates comprising compounding with 100 parts by weight of an elastomer prior to vulcanization 25-250 parts by weight of a polydodecenamer reinforcing resin having a reduced specific viscosity, measured in decahydronaphthalene at 135.degree. C., of 0.5 - 6 dl./g., and a trans-vinylene content of more than 60%, obtained by polymerication of a mixture of
- a. 50-95% by weight of cyclododecene,
- b. 5-40% by weight of cyclododecadiene, and
- c. up to 10% by weight of 1,5,9-cyclododecatriene, in a solvent by a methathesis catalyst;
- and vulcanizing the compounded elastomer.
A uniformly admixed rubber composition comprising 100 parts by weight of an elastomer and 25-250 parts by weight of a polydodecenamer reinforcing resin having a reduced specific viscosity, measured in decahydronaphthalene at 135.degree. C., of 0.5 - 6 dl./g., and a trans-vinylene content of more than 60%, obtained by polymerization of a mixture of
- a. 50-95% by weight of cyclododecene,
- b. 5-40% by weight of cyclododecadiene, and
- c. up to 10% by weight of 1,5,9-cyclododecatriene in a solvent by a metathesis catalyst.
Dependencies are inferred from the claim text.