Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2011-03-29
2011-03-29
Cain, Edward J (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C523S106000, C523S107000, C523S108000, C523S113000, C526S264000
Reexamination Certificate
active
07915322
ABSTRACT:
The present invention relates to a polymerizable water-soluble or alcohol-soluble ultraviolet absorber, which is represented by the following formula (I):wherein R1is H or C1˜5alkyl; R2is H, Cl, Br or I; R3is H or methyl; and m each is an integer in the range from 3 to 12. The above-mentioned compounds are suitable for copolymerizing with one or more monomers to form copolymers so that the UV-light resistance of the copolymer can be efficiently promoted. For example, the polymer made by copolymerizing the above-mentioned compound with acrylate monomers can be applied to the production of optical medical materials, especially contact lenses or intraocular lenses.
REFERENCES:
patent: 4304895 (1981-12-01), Loshaek
patent: 4528311 (1985-07-01), Beard et al.
patent: 6036891 (2000-03-01), Liao et al.
patent: 11049824 (1999-02-01), None
Chang Chih-Kang
Chen Wei-Ju
Chung Cheng-Han
Hung Chiu-Ming
Jiang Hsiang-Lin
Bacon & Thomas PLLC
Cain Edward J
Everlight USA, Inc.
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