Process for injection molding a rapidly crystallizing polyethyle

Details Process for injection molding a rapidly crystallizing polyethyle Process for injection molding a rapidly crystallizing polyethyle

1981-04-15

1983-09-13

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

260 40R, 26432818, 525 64, B29F 108

Patent

active

044041616

ABSTRACT:
This disclosure is concerned with a process for molding polyethylene terephthalate at a reduced mold temperature, i.e., less than 120.degree. C., and still obtaining crystalline parts by incorporating a small amount of a two phase polyacrylate comprised of a cross-linked elastomeric first phase to which a rigid thermoplastic second phase has been grafted. It is also concerned with a glass reinforced polyethylene terephthalate especially suitable for molding into colder molds which contain this two phase polyacrylate.

REFERENCES:
patent: 3368995 (1968-02-01), Furukawa
patent: 3516957 (1970-06-01), Gray
patent: 3671487 (1972-06-01), Abolins
patent: 3692744 (1972-09-01), Rich
patent: 3808180 (1974-04-01), Owens
patent: 3814725 (1974-06-01), Zummerman
patent: 4022748 (1977-05-01), Schlichting
patent: 4034013 (1977-07-01), Lone
patent: 4086296 (1978-04-01), Carty
patent: 4096202 (1978-06-01), Farnham
patent: 4212791 (1980-07-01), Avery
patent: 4352904 (1982-10-01), Deyrup
Die Angewandte Makromolekulare Chemie, 65 (1977), pp. 1-21 (translation).

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