Polymer-optical brightener combinations in transparent film form

Plant husbandry – Process

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8 1W, 47 17, 47 29, 47DIG6, 25230132, 428522, 428523, 525 3, B32B 2706, B32B 2718, B32B 2732, C09K 1106, F21V 916

Patent

active

041898664

ABSTRACT:
This invention relates to a polymeric material having incorporated therein, 2,5-di-(5-tert-butyl-2-benzoxazolyl) thiophene for use as a substance transmissive to visible light.

REFERENCES:
patent: 2190890 (1940-02-01), Sellei
patent: 2222225 (1940-11-01), Green
patent: 3043709 (1962-07-01), Amborski
patent: 3089280 (1963-05-01), Klaas
patent: 3095421 (1963-06-01), Liechti et al.
patent: 4048367 (1977-09-01), Carlsson et al.
Modern Plastics Encyclopedia, McGraw-Hill, New York, 44 (1A), pp. 491-493 and 509, (1966).

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