Reactive compatibilization of polyacetal and polypropylene blend

Details Reactive compatibilization of polyacetal and polypropylene blend Reactive compatibilization of polyacetal and polypropylene blend

1990-12-05

1991-12-03

Marquis, Melvyn I.

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

Synthetic resins

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

525 64, C08G 6348, C08G 6391, C08L 5100, C08L 6100

Patent

active

050701444

ABSTRACT:
A compatible polymer blend containing a polyacetal, a hydroxylated polyacetal, polypropylene, and an acid-grafted polyolefine such as a muconic acid-polypropylene graft copolymer. The polyacetal is preferably a polyoxymethylene polymer such as Celcon.RTM.. The preferred hydroxylated polyacetal is one having a structure very similar to the polyacetal. The invention also includes a process for forming a compatible blend containing polypropylene and polyacetal by melt mixing polypropylene and polyacetal with an acid grafted polyolefin and hydroxylated polyacetal.

REFERENCES:
patent: 4299927 (1981-11-01), Dombroski
patent: 4556690 (1985-12-01), Nakagawa
patent: 4584347 (1986-04-01), Harpell et al.
patent: 4670508 (1987-06-01), Ohdaira et al.
patent: 4788258 (1988-11-01), Collins et al.
patent: 4942208 (1990-07-01), Forschirm et al.

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