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, 2000
Filed:
Dec. 01, 1998
Keizo Makuuchi, Gunma-ken, JP;
Fumio Yoshii, Gunma-ken, JP;
Varghese Siby, Gunma-ken, JP;
Yosuke Katsumura, Saitama-ken, JP;
Japan Atomic Energy Research Institute, Tokyo, JP;
Abstract
The tear strength of a vulcanized natural rubber latex shaped article is improved by shaping a mixture of a prevulcanized natural rubber latex and a water-soluble polymer. The prevulcanization of a natural rubber latex may be done by exposure to a radiation. The water-soluble polymer may be selected from the group consisting of polyvinyl alcohol, polyethylene oxide, polyvinyl pyrrolidone and mixtures thereof. The water-soluble polymer may be added to the vulcanized natural rubber latex in an amount of 1-10 parts by weight per 100 parts by weight of the natural rubber.