The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 1989
Filed:
Jul. 15, 1988
Tetsuo Ohyama, Yokohama, JP;
Shuichi Akita, Kamakura, JP;
Hiroyuki Watanabe, Yokohama, JP;
Akio Ueda, Kamakura, JP;
Nippon Zeon Co., Ltd., Tokyo, JP;
Abstract
A vibration insulating rubber having an improved balance between its loss tangent and dynamic-to-static modulus ratio is prepared by molding and curing a rubber compound comprising as a rubber component a modified rubbery polymer obtained by reacting (1) a rubbery polymer having at least one metal selected from alkali metals and alkaline earth metals bonded to its molecular chain with (2) at least one compound selected from organic compounds having a bond of the formula ##STR1## wherein X represents an oxygen or sulfur atom, in the molecule, benzophenones having at least one of unsubstituted and substituted amino groups, and thiobenzophenones having at least one of unsubstituted or substituted amino groups.