Near infrared absorbing polymerizate, from dicarboxylic compound

Details Near infrared absorbing polymerizate, from dicarboxylic compound Near infrared absorbing polymerizate, from dicarboxylic compound

1983-04-11

1984-08-07

Anderson, Harold D.

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

Synthetic resins

From heavy metal or aluminum reactant having at least one...

528271, 528370, 528392, 252587, C08G 8300

Patent

active

044645252

ABSTRACT:
Disclosed is an optically clear casting prepared by polymerizing a composition comprising (1) a diol bis(allyl carbonate) monomer, e.g., diethylene glycol bis(allyl carbonate), (2) from about 1 to about 10 weight percent of a saturated aliphatic or aromatic dicarboxylic acid containing from 3 to 10 carbon atoms, e.g., succinic acid and phthalic acid or the anhydrides of succinic acid and phthalic acid, and (3) an infrared absorbing amount, e.g., 1.5 to 4.0 weight percent, of a metal hexacarbonyl, e.g., tungsten, molybdenum or vanadium hexacarbonyl. The castings are capable of absorbing near infrared radiation and are useful as optical, e.g., ophthalmic, lenses.

REFERENCES:
patent: 3355294 (1967-11-01), Giddings
patent: 3576755 (1971-04-01), Patella et al.
patent: 3692688 (1972-09-01), Castellion et al.
patent: 4069168 (1978-01-01), Leatherman et al.
patent: 4181626 (1980-01-01), Leatherman
M. A. El-Sayed, "A New Class of Photochromic Substances:Metal Carbonyls," J. Phys. Chem., 68(2), pp. 433-434, Feb. 1964.
A. G. Massey, "A Reversible Photochromic Polymer," Nature, 4796, p. 1387, (Sep. 30, 1961).

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