Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1996-11-27
1999-10-26
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
252586, 252589, 4304951, 430962, 526260, 526319, 5263231, 5263232, 5263285, 526333, C08F 1824, C08L 3502, G03C 173
Patent
active
059730935
ABSTRACT:
Describes polymerizable organic compositions of a major amount of a first monomer component which is a polyol(allyl carbonate), e.g., diethylene glycol bis(allyl carbonate), and from about 2 to 35 weight percent of a second monomer component which is an alkoxylated bisphenol (or hydrogenated bisphenol) having acrylate or methacrylate groups, e.g., dimethacrylate of bisphenol A having 25 to 35 ethoxy units. Substantially completely cured polymerizates prepared from such compositions may be used to prepare photochromic articles, e.g., lenses, by incorporating a photochromic substance, e.g., by thermal transfer, into the polymerizate.
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Techniques of Chemistry, Photochromism, vol. 3, "Photochromic Processes Involving Heterolytic Cleavage", R. C. Bertelson, Chap. 3, pp. 48-55, pp. 252-254, pp 399, p 842, Wylie-Interscience.
Crano John C.
Daughenbaugh Randy E.
Herold Robert D.
Wiedrich Charles R.
Franks James R.
PPG Industries Ohio Inc.
Stein Irwin M.
Zitomer Fred
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