Polyester melt-adhesive compositions and methods of making and u

Details Polyester melt-adhesive compositions and methods of making and u Polyester melt-adhesive compositions and methods of making and u

1988-06-10

1989-12-05

Short, Patricia

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524590, 524602, 525440, C08G 1842, C08L 7506

Patent

active

048853313

ABSTRACT:
Heat-resistant, polymer-containing, solvent-free adhesive compositions are prepared by reacting a novel mixture of saturated polyester or copolyester with capped isocyanate under the influence of temperature and, if necessary, catalysts, with evident viscosity increase, with cross-linking as appropriate.
The adhesive compositions combine the process-technical properties of low-viscosity melt-adhesives and the strength, tenacity and stability of cross-linked duroplasts or high-viscosity thermoplasts. Subsequent working and protection from explosion are not necessary. Use is possible in each known art for melt-adhesives, e.g. as paste, powder, melt, textiles, or flat structures. In addition, the compositions are suitable as melt coatings or for injection moulding reactions.

REFERENCES:
patent: 3822240 (1974-07-01), Schmitt
patent: 3991034 (1976-11-01), Takeo
patent: 4093674 (1978-06-01), Tsutsui
patent: 4150211 (1979-04-01), Muller
patent: 4151220 (1979-04-01), Watamabe
patent: 4246380 (1981-01-01), Gras
patent: 4413079 (1983-11-01), Disteldorf
patent: 4442270 (1984-04-01), Passmore
patent: 4528355 (1985-07-01), Gras

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