Colorless allyl diglycol carbonate articles

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

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528277, 528306, C08G 6352

Patent

active

041396944

ABSTRACT:
Composition of matter and process for imparting a colorless appearance to cast allyl diglycol carbonate articles such as lenses and lens blanks and for simultaneously imparting to the article an ability to fluoresce when subjected to ultraviolet light. The composition comprises about 40 parts maleic anhydride, maleic acid, copolymers of propylene glycol with maleic acid or maleic anhydride, or mixtures thereof, and between about 0.5 and 1.5 parts of a mixture of 10 parts cobalt acetyl acetonate and between about 0.4 parts to 1.2 parts copper acetyl acetonate. Between about 0.05 and 0.15 parts of the composition is mixed with 1600 parts allyl diglycol carbonate monomer-catalyst prepolymer mixture and cast to form the desired article.

REFERENCES:
patent: 3216958 (1965-11-01), Sheld
patent: 3872042 (1975-03-01), Bond
patent: 3920590 (1975-11-01), Jacobs et al.
patent: 4001348 (1977-01-01), Selbeck et al.

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