Forming preblend of flexible coil polymer and block copolymer of

Details Forming preblend of flexible coil polymer and block copolymer of Forming preblend of flexible coil polymer and block copolymer of

1991-12-23

1993-11-30

Short, Patricia A.

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

Synthetic resins

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

525425, 525432, 525437, C08L 6702, C08L 7700

Patent

active

052666581

ABSTRACT:
Preblends with improved interfacial adhesion, capable of later melt blending, can be formed by heating, above their glass transition temperatures but below their melting temperatures, a flexible coil polymer, to serve as the matrix, and a lesser amount of a block copolymer of a thermotropic liquid crystal polymer and a flexible coil polymer.

REFERENCES:
patent: 4228218 (1980-10-01), Takayanagi
patent: 4386174 (1983-05-01), Cogswell
patent: 4438236 (1984-03-01), Cogswell
patent: 4728698 (1988-03-01), Isayev
patent: 4792587 (1988-12-01), Kanoe
patent: 5043400 (1991-08-01), Tsuruta et al.
M. Paci, "Compatibility of Blends of Poly(Butylene terephthalate) and Liquid Crystal Polymers: A DSC Study" Thermochimica Acta 137 (1988) 105-114.
D. Dutta, "Polymer Blends Containing Liquid Crystals: A Review" Pol. Eng. & Sci. vol. 30, No. 17 (1990) 1005-1018.
M. Kimura, "Compatibility of Poly(butylene terephthalate) with a Liquid-Crystalline Copolyester" J Pol. Sci. vol. 22 (1984) 1697-1698.
B. Shin, "Speculation on Interfacial Adhesion . . . Spacer Groups" Pol. Eng. & Sci vol. 30 No. 1 (1990) pp. 13-21.

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