Rubber composition having high modulus of elasticity and process for preparing same
AssigneeJapan Synthetic Rubber Co., Ltd.
InventorsHiroharu Ikeda, Kohei Goto, Yasuyuki Shimozato
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Abstract
A rubber composition consisting essentially of a dispersion in which particles of a high-melting isotactic poly-.alpha.-olefin having a melting point of at least 150.degree. C. are uniformly dispersed in a rubber matrix, said particles having an average particle size of not more than 200.mu., has a high modulus of elasticity and also excellent tear resistance. Such rubber composition can be obtained, for example, by mixing fine powder of said isotactic poly-.alpha.-olefin having an average particle size of not more than 200.mu. with a rubber solution, dispersing the particles uniformly in said rubber solution and recovering a rubber composition from the dispersion.
Claims10
A rubber composition having a high modulus of elasticity consisting essentially of a dispersion in which fine particles of a high-melting isotactic poly-.alpha.-olefin having a melting point of at least 150.degree. C. are uniformly dispersed in a rubber matrix, said fine particles having an average particle size of not more than 200.mu..
A rubber composition having a high modulus of elasticity consisting essentially of a dispersion in which fine particles of a high-melting isotactic polypropylene having a melting point of at least 150.degree. C. are uniformly dispersed in a polyisoprene rubber matrix, said fine particles having an average particle size of not more than 200 microns.
Dependencies are inferred from the claim text.