Process using supercooled liquid lactam mixtures

Details Process using supercooled liquid lactam mixtures Process using supercooled liquid lactam mixtures

1983-01-27

1985-01-29

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26432816, 528315, 528325, B29F 100

Patent

active

044965141

ABSTRACT:
This invention relates to reaction injection molding of a mixture of lactams in presence of a catalyst and a promotor which is carried out by mixing at least two lactams in a liquid state with the catalyst and promoter before injecting the mixture into a preheated mold. The use of a mixture of lactams results in a supercooled mixture which remains liquid at ambient temperature for at least 2 hours.

REFERENCES:
patent: 3017391 (1962-01-01), Mottus et al.
patent: 3017392 (1962-01-01), Butler et al.
patent: 3234152 (1966-02-01), Fuller
patent: 3427289 (1969-02-01), Warner
patent: 3637608 (1972-01-01), Schaaf et al.

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