Process for preparing chain extended polymers and graft and bloc

Details Process for preparing chain extended polymers and graft and bloc Process for preparing chain extended polymers and graft and bloc

1993-11-12

1994-07-05

Seidleck, James J.

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

Synthetic resins

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

525419, 525420, 525425, 525432, 525181, 525397, 5283082, C08L 7700, C08L 6700, C08G 6391

Patent

active

053268300

ABSTRACT:
The invention relates to a process for forming chain extended polymers and graft and block polymers and copolymers which comprises the steps of: (a) forming an intimate mixture of one or more polymers and one or more effective phosphorus (III) chain extension reagent compounds; wherein at least one of said effective chain extension reagents has bonded to the phosphorus (III) atom at least one group which is a nitrogen-containing heteroaromatic moiety that is bonded through a nitrogen of the heteroaromatic moiety to the phosphorus (III) atom by a single bond; and (b) heating said mixture for a time and at a temperature sufficient to form said extended chain polymer or copolymer. Further embodiments relate to polymers and copolymers prepared in accordance with the process of this invention as well as articles formed from these polymers and polymer compositions comprising the polymeric materials of this invention.

REFERENCES:
patent: 4390667 (1983-06-01), Aharoni et al.
patent: 4417031 (1983-11-01), Aharoni et al.
patent: 4417032 (1983-11-01), Khanna et al.
patent: 4433116 (1984-02-01), Largman et al.
patent: 4568720 (1986-02-01), Aharoni et al.
patent: 4946909 (1990-08-01), Bhattacharjee et al.
patent: 4963311 (1990-10-01), Aharoni et al.
patent: 5037897 (1991-08-01), Glans
patent: 5055509 (1991-10-01), Bhattacharjee et al.
U.S. Patent Application, Ser. No. 903,438, filed on Jun. 24, 1992.

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