Heat-shrinkable or heat-expandable products from hydrogenated po

Details Heat-shrinkable or heat-expandable products from hydrogenated po Heat-shrinkable or heat-expandable products from hydrogenated po

1975-07-18

1980-02-05

Thurlow, Jeffery R.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

264230, 264236, 264291, 264320, 264342R, 264347, 264231, 2642893, 525334, B29H 501

Patent

active

041873602

ABSTRACT:
An article of manufacture having heat-alterable memory characteristics consisting of a shaped, vulcanized composition comprising a hydrogenated polybutadiene which in its unhydrogenated state contains from about 15 to about 55 percent trans 1,4-addition and from about 15 to about 40 percent cis 1,4-addition, the article being in a dimensionally heat-unstable condition capable of altering its physical form upon application of heat alone. The article is produced by hydrogenating the above-described polybutadiene, shaping and vulcanizing the hydrogenated polybutadiene and subjecting the shaped, vulcanized article to a force sufficient to alter its dimensions.

REFERENCES:
patent: 2864809 (1958-12-01), Jones et al.
patent: 3139468 (1964-06-01), Wheat
patent: 3225122 (1965-12-01), Stumpe
patent: 3468862 (1969-09-01), Schotland
patent: 3509116 (1970-04-01), Cote et al.
patent: 3597372 (1971-08-01), Cook
patent: 3629172 (1971-12-01), Jones
patent: 3663662 (1972-05-01), Golike et al.
Macromolecules, "Synthesis & Properties of Ethylene-Butene-1 Block Copolymer", Falk et al., pp. 152-154, vol. 4, No. 2, 3--1971.

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