Hotmelt bonding process

Details Hotmelt bonding process Hotmelt bonding process

1991-03-15

1995-04-18

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563314, 4272082, 427422, 525440, 528 59, 528 83, C09J 400

Patent

active

054075173

ABSTRACT:
The invention relates to a process for bonding surfaces with isocyanate-containing prepolymers having an isocyanate group content of less than 1.8% by weight, based on the prepolymer, and an average molecular weight MW.sub.n of at least 4,500 in which (a) the prepolymers are prepared by the reaction of (i) polyester diols prepared from dodecanedioic acid and even-numbered alkane diols containing at least 6 carbon atoms and (ii) diisocyanates; (b) the prepolymer is applied as a hotmelt adhesive at a temperature of 80 to 160.degree. C. by spin-spraying onto at least one surface to be bonded; and (c) the treated surface is brought into intimate contact with a second surface to be bonded.

REFERENCES:
patent: 3911173 (1975-10-01), Sprague
patent: 4808255 (1989-02-01), Markevka
patent: 5019638 (1991-05-01), Muller et al.

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