Electron beam curable polyrethane compositions

Details Electron beam curable polyrethane compositions Electron beam curable polyrethane compositions

1982-08-02

1984-05-01

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525404, 525408, 525411, 525412, 525415, 525438, 525454, 525920, 20415919, C08F28306, C08G 6532, C08L 7504

Patent

active

044462867

ABSTRACT:
Improved electron beam curable compounds are prepared by mixing 100 weight parts of (1) polyurethanes prepared from polymeric polyols, organic diisocyanates and polyethers having terminal hydroxyl and unsaturated groups, or terminal hydroxyl and pendant unsaturated groups with (2) to 1 to 25 weight parts of an acrylate or alkacrylate terminated polyurethanes prepared by reacting isocyanate terminated prepolymers of hydroxyl terminated polymers with hydroxyl-terminated acrylates or alkacrylates. Compositions of this blend may be crosslinked or cured in a few seconds by electron beam to provide an improved stable coating that can be cured to a variety of hardnesses. These polyurethanes combined with phenoxy resins also form particularly useful binder systems for magnetic tape.

REFERENCES:
patent: 3493634 (1970-02-01), Kolycheck
patent: 4188455 (1980-02-01), Howard
patent: 4254230 (1981-03-01), Howard

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