Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1997-05-19
1998-08-25
Nagumo, Mark
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525321, 525324, 525314, 525315, 525247, 525268, 525285, 525290, C08F29706
Patent
active
057984204
ABSTRACT:
This invention relates to block polymers containing both crystalline and elastomeric blocks, the block copolymer having an A block and a B block. The A block is a polyethylene or an ethylene polymer optionally containing an alpha-olefin and optionally a non-conjugated diene, and is generally crystalline. The B block is an ethylene, .alpha.-olefin copolymer. Also disclosed is a process for manufacture of the block copolymers and methods for coupling the block copolymers. Coupled block copolymers are useful as thermoplastic elastomers exhibiting physical properties approaching those of crosslinked EP or EPDM elastomers, but showing thermal processability after coupling. The block copolymers of the present invention may also be used as a lubricant or fuel additive, as a plastics blend component, and as a component in hot melt adhesives.
REFERENCES:
patent: 3378606 (1968-04-01), Kontos
patent: 3378608 (1968-04-01), Hassell et al.
patent: 3499060 (1970-03-01), Suzuki et al.
patent: 3798288 (1974-03-01), McManimie et al.
patent: 4065520 (1977-12-01), Bailey et al.
patent: 4408019 (1983-10-01), Blunt
patent: 4481336 (1984-11-01), Fujii et al.
patent: 4716207 (1987-12-01), Cozewith et al.
patent: 4804794 (1989-02-01), Ver Strate et al.
patent: 4843129 (1989-06-01), Spenadel et al.
patent: 4882406 (1989-11-01), Cozewith et al.
patent: 4900461 (1990-02-01), Ver Strate et al.
patent: 4959436 (1990-09-01), Cozewith et al.
patent: 5030695 (1991-07-01), Cozewith et al.
"The Effect of Molecular Weight and Molecular Weight Distribution on the Non-Nuetonian Behavior of Ethylene-Propylene-Diene Polymers", Trans. Soc. Rheol., 14, 83(1970); C. K. Shih.
Capone Gaetano A.
Cozewith Charles
Ver Strate Gary William
West Roger K.
Exxon Chemical Patents Inc.
Miller Douglas W.
Nagumo Mark
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