Preparation method of masterbatch composition for thermoplastic

Details Preparation method of masterbatch composition for thermoplastic Preparation method of masterbatch composition for thermoplastic

1989-06-29

1990-05-29

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...

264143, 524490, C08L 2318, C08L 2308

Patent

active

049296809

ABSTRACT:
A method for the preparation of masterbatch compositions for use in thermoplastic resin modification by blending polybutene with an ethylene..alpha.-olefin copolymer which is obtained by copolymerizing ethylene and .alpha.-olefin in the presence of specific catalysts and has specific characteristics such as a density of exceeding 0.910 g/cm.sup.3 and 0.940 g/cm.sup.3 or less, and successively by kneading and extruding the blend in the temperature range from the maximum peak temperature (Tm) to (Tm-45.degree. C.) in accordance with differential scanning calorimetry (DSC).

REFERENCES:
patent: 3455871 (1969-07-01), Coover et al.
patent: 4337188 (1982-06-01), Climenhage et al.
patent: 4542188 (1985-07-01), van de Heijden
patent: 4657982 (1987-04-01), Brecke et al.
patent: 4803035 (1989-02-01), Kresge et al.

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