Radiation curable acrylated polyurethane

Details Radiation curable acrylated polyurethane Radiation curable acrylated polyurethane

1977-09-29

1978-12-26

Cockeram, H.S.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

260 775AM, 260 775AN, 260 775AP, 26015919, 20415919, 528 59, 528 75, C08G 1867, C08G 1842, C08G 1812

Patent

active

041316029

ABSTRACT:
Radiation curable acrylated polyurethane is porduced by (a) producing an isocyanate-terminated intermediate by coreacting an organic diisocyanate with a combination of organic tri/tetraol and organic diol, said combination being chosen from polyester tri/tetraol-polyether diol and polyether tri/tetraol-polyester diol combinations; (b) reacting the isocyanate-terminated intermediate with an hydroxyacrylate such as 2-hydroxyethyl acrylate. Unexpectedly, the oligomer has desirably low viscosity, yet cures upon exposure to radiation to a coating having good physical properties.

REFERENCES:
patent: 3642943 (1972-02-01), Noel
patent: 3700643 (1972-10-01), Smith et al.
patent: 3741918 (1973-06-01), Koleske et al.
patent: 3746665 (1973-07-01), Koleske et al.
patent: 3782961 (1974-01-01), Takahashi et al.
patent: 3891523 (1975-06-01), Hisamatsu et al.
patent: 3954584 (1976-05-01), Miyata et al.
patent: 4013806 (1977-03-01), Volkert et al.

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