Thermoplastic compositions, process for their preparation and th

Details Thermoplastic compositions, process for their preparation and th Thermoplastic compositions, process for their preparation and th

1980-01-25

1982-06-22

Ziegler, J.

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

Synthetic resins

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

525148, 525390, 525391, 525437, 525445, C08L 6900

Patent

active

043363482

ABSTRACT:
This disclosure is concerned with an improved process for preparing polymer blends by synthesizing a polyester by the phase boundary condensation synthesis wherein a preformed polymer is dissolved in the organic solvent phase of the synthesis system. This polymer is inert to the diphenol acid chloride and alkali used to form the polyester and differs from this polyester by at least molecular weight and may differ from it in chemical identity. This disclosure is also concerned with the polymer blends so obtained which display superior properties to those obtained by physically blending two already formed polymers.

REFERENCES:
patent: 3000849 (1961-09-01), Clachan et al.
patent: 3143525 (1964-08-01), Ott

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