Increasing the molecular weight of polyamides

Details Increasing the molecular weight of polyamides Increasing the molecular weight of polyamides

1997-04-07

1998-05-26

Gulakowski, Randy

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

Synthetic resins

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

525504, 525508, 525533, 525538, 528 89, 528108, C08F28304, C08G 828, C08G 5968

Patent

active

057565961

ABSTRACT:
An increase in the molecular weight of a polyamide or recycled polyamide, essentially without crosslinking, can be achieved by blending said polyamide with a polyfunctional epoxy resin and a sterically hindered hydroxyphenylalkylphosphonic acid ester or half-ester and heating the blend to above the melting point (or the glass transition temperature) of the polyamide, in the absence of a catalyst of the type used in the polymerization of polyamides.

REFERENCES:
patent: 2732367 (1956-01-01), Shokal
patent: 3281505 (1966-10-01), Spivack
patent: 3310575 (1967-03-01), Spivack
patent: 3790648 (1974-02-01), Schmidt et al.
patent: 3824192 (1974-07-01), DiBattista et al.
patent: 3865786 (1975-02-01), Mueller et al.
patent: 3901848 (1975-08-01), DiBattista et al.
patent: 3932781 (1976-01-01), Fenyes et al.
patent: 4069200 (1978-01-01), Spivack
patent: 4778840 (1988-10-01), Linhart et al.
patent: 4845168 (1989-07-01), Dukes et al.
patent: 4912175 (1990-03-01), Wheland et al.
patent: 5013818 (1991-05-01), Takemura et al.
patent: 5116919 (1992-05-01), Buzinkai et al.
patent: 5142000 (1992-08-01), Wheland
patent: 5250619 (1993-10-01), Heinz et al.
P. Baierweck et al., "Betriebsmittelkantaminierte Kfz-Teilewiederverwerten"; Kunstoffe 82(1992) pp. 915-920.

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