Copolymer of propylene and butene-1

Details Copolymer of propylene and butene-1 Copolymer of propylene and butene-1

1990-07-25

1992-12-08

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 5263482, 5263484, 5263485, C08F21006

Patent

active

051699249

ABSTRACT:
A copolymer of propylene and butene-1, the constituent monomer units of which comprise 20-63 wt. % of propylene and 37-80 wt. % of butene-1, and which exhibits 0.5 or more in the ratio of the sum of the intensities of absorptions observed at about 20.0-21.0 ppm to the sum of the intensities of total absorptions attributable to the methyl groups in the propylene units observed at about 19.0-22.0 ppm in the .sup.13 C-NMR spectrum measured in a 1,2,4-trichlorobenzene solution and 0.05 or more in the intrinsic viscosity measured at 135.degree. C. in a tetralin solution.

REFERENCES:
patent: 4892851 (1990-01-01), Ewen et al.
Journal Of The American Chemical Society, vol. 110, 1988, pp. 6255-6256, American Chemical Society; J. A. Ewen et al.

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