Process for preparing polyester fiber composite materials useful

Details Process for preparing polyester fiber composite materials useful Process for preparing polyester fiber composite materials useful

1978-11-08

1981-02-03

Kendall, Ralph S.

Stock material or miscellaneous articles

Composite

Of epoxy ether

428395, 4284237, 4284239, 4284247, 427386, 156110A, 4284248, C09J 500, D02G 348

Patent

active

042489385

ABSTRACT:
A process for preparing a polyester fiber composite material having an excellent bonding property to rubber, a proper softness and a high resistance to fatigue, comprises the steps of first impregnating a polyester fiber material much as fabric, cord or thread, with a first treating liquid containing (A) a polyepoxide compound having two or more epoxy groups per molecule of the compound, (B) a blocked polyisocyanate compound, for example, an addition product of a polyisocyanate compound with a phenol, tertiary alcohol or aromatic secondary amine compound and (C) a rubber latex such as vinyl pyridine-styrene-butadiene terpolymer latex; first drying and heat treating the first impregnated material at a temperature of, preferably, 180.degree. C. or higher but lower the melting point of the polyester fiber material; second impregnating the first impregnated and heat-treated material with a second treating liquid containing a resorcinformaldehyde reaction product, a rubber latex and, optionally, an ethylene urea compound of the formula ##STR1## wherein R is an aromatic or aliphatic hydrocarbon residue and n is 0.1 or 2, and; second drying and heat-treating the second impregnated material at a temperature of, preferably, 120.degree. C. or more but lower than the melting point of the polyester fiber material.

REFERENCES:
patent: 3307966 (1967-03-01), Shoaf
patent: 3460973 (1969-08-01), Hantzer et al.
patent: 3464878 (1969-09-01), Schwarz
patent: 3503845 (1970-03-01), Hollatz
patent: 3897585 (1975-07-01), Wood

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