Composition of polybutene-1 and a process for preparing same

Details Composition of polybutene-1 and a process for preparing same Composition of polybutene-1 and a process for preparing same

1992-04-13

1993-08-17

Schofer, Joseph L.

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

Synthetic resins

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

525268, 525270, 525319, 525320, 525322, 525324, 5263486, C08F25500

Patent

active

052370135

ABSTRACT:
Disclosed is a composition of polybutene-1 comprised of a polymer resulting from preliminarily polymerization of a small amount of an .alpha.-olefin, which has an intrinsic viscosity [.eta.]p of 7 dl/gram or lower, as measured at 135.degree. C. in a decalin solution; and a homopolymer of butene-1 or a copolymer of butene-1 and 20% by weight of an .alpha.-olefin other than butene-1, the composition of polybutene-1 having an intrinisic viscosity [.eta.]t of 0.5-7.0 dl/gram, when measured at 135.degree. C. in a decalin solution, and satisfying the following relationship with respect to the intrinsic viscosity [.eta.]p:[.eta.]p.ltoreq.2.5.times[eta.]r. The composition provides resulting films with highly improved appearance and with a lesser number of gel and fish eyes.

REFERENCES:
patent: 4239871 (1980-12-01), Fukui
patent: 4321334 (1982-03-01), Chatterjee
patent: 4438238 (1984-03-01), Fukushima et al.
Chemical Abstracts, vol. 102, No. 12, Mar. 1985, Abstract No. 96461Z p. 25, col. L of JP-A-59-193-913.

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