Ultraviolet-hardening urethane acrylate oligomer

Details Ultraviolet-hardening urethane acrylate oligomer Ultraviolet-hardening urethane acrylate oligomer

1992-09-30

1994-06-21

Berman, Susan

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522174, 528 52, 528 53, 528 54, 528 57, 528 73, 528 84, C08F 248, C08G 1818, C08G 1872

Patent

active

053228618

ABSTRACT:
Disclosed is an urethane acrylate oligomer to be obtained by reacting an isocyanate group-having urethane prepolymer and hydroxyl group-having acrylate and/or methacrylate, in which the urethane prepolymer is one having isocyanurate rings and the hydroxyl group-having acrylate and/or methacrylate comprises 4-hydroxybutyl acrylate and/or 4-hydroxybutyl methacrylate. The oligomer has a much lower viscosity of itself and a much higher ultraviolet-hardening speed, than the conventional urethane acrylate oligomers, and may be hardened to give a film having excellent physical properties of flexibility, heat resistance, weather resistance of hot-cold repetition cycles and scratch resistance.

REFERENCES:
patent: 4382102 (1983-05-01), Noomen
patent: 4485226 (1984-11-01), Noll et al.

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