Photoactive compounds for use with narrow wavelength band ultrav

Details Photoactive compounds for use with narrow wavelength band ultrav Photoactive compounds for use with narrow wavelength band ultrav

1998-09-30

2000-10-31

Berman, Susan W.

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

Synthetic resins

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

522 46, 522 48, 522 49, 522 50, 522 53, 522 57, 522 63, 522 65, 522 68, 522142, 522 2, C08F 248, C08F 400, C08F 2020

Patent

active

061403857

ABSTRACT:
Novel substituted diaryl ketones, photopolymerization compositions including the compounds, and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with ultraviolet light using conventional techniques and radiation sources to give greatly improved cure speeds. The compounds of the invention also show a significantly elevated level of reactivity at a narrow wavelength band, with a peak emission wavelength at or near 308 nm. Because of the increased level of activity, the photoinitiator can be used in considerably lower amounts.

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