Blends of a propylene/.alpha.-olefin copolymer with isotactic pr

Details Blends of a propylene/.alpha.-olefin copolymer with isotactic pr Blends of a propylene/.alpha.-olefin copolymer with isotactic pr

1983-02-22

1984-07-24

Seccuro, Carman J.

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

Synthetic resins

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

5263483, 5263485, C08L 2310, C08L 2318

Patent

active

044618727

ABSTRACT:
Blends of an isotactic propylene polymer with a copolymer of propylene with a C.sub.6 -C.sub.12 .alpha.-olefin, wherein the mole proportion of the .alpha.-olefin in the copolymer is 10-55%; the crystallinity number of the copolymer is 10 to 37; and the sum of the mole proportion of .alpha.-olefin in the copolymer and the copolymer's crystallinity number is 20-65 are useful in a variety of applications requiring a broad range of properties from soft elastomers to rigid plastics, including spunbonded fiber materials, film, and adhesives.

REFERENCES:
patent: 3882197 (1975-05-01), Fritz et al.
patent: 3888949 (1975-06-01), Chi-Kai Shih
patent: 4169116 (1979-09-01), Trotter et al.
patent: 4259470 (1981-03-01), Trotter et al.
Fritz and Su Abandoned, U. J. Application Ser. No. 369,273, filed 6-11-73.

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