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:
Sep. 14, 1999
Filed:
Jun. 16, 1997
Applicant:
Inventor:
Rong Jong Chang, Fremont, CA (US);
Assignee:
Raychem Corporation, Menlo Park, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
522-1 ; 525193 ; 525211 ; 525237 ; 525240 ; 525289 ; 525313 ; 524483 ; 524490 ; 522114 ; 526335 ; 526337 ; 526339 ; 526348 ; 5263486 ;
Abstract
An elastomer has a modulus intermediate between that of a conventional rubber and a gel. The elastomer includes (a) between 20 and 45 parts by weight of a semicrystalline elastomer having between 1 and 15% crystallinity and (b) between 80 and 55 parts by weight of a compatible liquid elastomer having a number-average molecular weight of between 1,500 and 8,500. The elastomer's modulus is sufficiently high to enable it to be fabricated into handleable articles, but is sufficiently low so that it provides effective sealing of substrates it covers without the need for introducing a separate sealing material such as a mastic or adhesive.