Low modulus elastomer

Details Low modulus elastomer Low modulus elastomer

1997-06-16

1999-09-14

Acquah, Samuel

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

525193, 525211, 525237, 525240, 525289, 525313, 524483, 524490, 522114, 526335, 526337, 526339, 526348, 5263486, C08F 246, C08F 800

Patent

active

059523964

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.

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ASTM D412-92.
Scientific American May 1997, pp. 86-91.
Morton (ed.), Rubber Technology, 2nd Ed., pp. 121-125 (Van Nostrand 1973) IEEE Std 404-1986.
PCT Search Report mailed Oct. 6, 1998.

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