Polymerization method using ultraviolet light

Details Polymerization method using ultraviolet light Polymerization method using ultraviolet light

1979-09-19

1981-12-29

Bleutge, John C.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415924, C08F 250

Patent

active

043081207

ABSTRACT:
What is disclosed is a method for the free-radical polymerization, at a temperature between 0.degree. C. and 100.degree. C. using ultraviolet light, of a material to be polymerized which comprises at least one unsaturated monomer, which method comprises adding an ultraviolet absorber which is only weakly effective or is inert as a free-radical initiator to the material to be polymerized, initiating polymerization of the material in an initiation phase by irradiation thereof with ultraviolet light, controlling the further course of the polymerization in a polymerization phase by increasing the intensity of the irradiating ultraviolet light with time, and concluding the polymerization by irradiation with ultraviolet light in a terminal phase, said ultraviolet absorber absorbing in the wavelength region of the irradiating ultraviolet light.

REFERENCES:
patent: 3655483 (1972-04-01), Borrell et al.
patent: 3912607 (1975-10-01), Communal et al.
patent: 3943046 (1976-03-01), De Sorga et al.
patent: 4105519 (1978-08-01), Pennewiss et al.
patent: 4165265 (1979-08-01), Nakabayashi et al.
patent: 4178221 (1979-12-01), Boutin et al.

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