Composite quasi-crystalline material

Details Composite quasi-crystalline material Composite quasi-crystalline material

1981-08-03

1983-09-20

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

264 24, 430345, C08L 3502

Patent

active

044057334

ABSTRACT:
A composite quasi-crystalline material made of a polymeric support matrix having disposed therein polar quasi-crystals of photochromic spiropyran complexes, believed to be of the formula A.sub.n B, in which A represents the "colorless" photochromic spiropyran molecule and B represents the colored merocyanine form which is the photolysis product of A, and n is 2 or 3. The polar quasi-crystals are present in the composite material in a substantially polar aligned form. Methods for making the composite material are also disclosed.

REFERENCES:
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patent: 3938881 (1976-02-01), Biegelsen et al.
patent: 4034408 (1977-07-01), Starkweather
patent: 4040096 (1977-08-01), Starkweather
patent: 4171980 (1979-10-01), Ceintrey
patent: 4205348 (1980-05-01), De Benedicts et al.
patent: 4213157 (1980-07-01), De Benedicts et al.
patent: 4237207 (1980-12-01), Ceintrey
IBM Technical Disclosure Bulletin, vol. 14, No. 1, pp. 290-292, (Jun. 1971).
V. A. Krongauz, S. N. Fishman & E. S. Goldburt, "Quasi-Crystals Growth from Photochromic Spiropyrans in a Constant Electric Field", Journal of Physical Chemistry, 82(23): pp. 2469-2474, (1978).
Israel Journal of Chemistry 18: pp. 304-311, (1979).

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