Title:
【発明の名称】光互変性ポリマー製物品
Document Type and Number:
Japanese Patent JPH0737612
Kind Code:
B2
Abstract:
A photochromic article having improved photochromic equilibrium response is described. In particular, a photochromic compound is incorporated into or applied to an article, e.g., matrix, of a synthetic organic resin prepared from a composition comprising from about 55 to about 90 weight percent of a polyol(allyl carbonate), e.g., diethylene glycol bis(allyl carbonate), from about 10 to about 40 weight percent of an aliphatic polyurethan having terminal ethylenic unsaturation, e.g., an aliphatic polyesterurethan diacrylate, and from about 0 to about 5 weight percent of a difunctional monomer selected from the group consisting of allyl methacrylate and allyl acrylate. Such photochromic articles have an improved photochromic equilibrium response at ambient temperatures compared to the response of a comparable photochromic article prepared from a polyol(allyl carbonate) homopolymer, e.g., homopolymers of diethylene glycol bis(allyl carbonate), at the same ambient temperatures.
Inventors:
McBain, Douglas S
Kurano, John Sea
Kurano, John Sea
Application Number:
JP50555390A
Publication Date:
April 26, 1995
Filing Date:
March 28, 1990
Export Citation:
Assignee:
PPG INDUSTRIES, INCORPORATED
International Classes:
C08L31/00; C08F18/00; C08F218/00; C08F218/16; C08F290/00; C08F290/06; C08F299/06; C08L57/00; C09K9/02; (IPC1-7): C09K9/02; C08F290/06; C08L57/00
Domestic Patent References:
| JPS61159458A | 1986-07-19 | |||
| JPS62187784A | 1987-08-17 |
Foreign References:
| US3565814A | 1971-02-23 | |||
| US4360653A | 1982-11-23 |
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)
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