HYDROXYARYLQUINAZOLINES AND THEIR USE AS UV-ABSORBERS

1,249,370. Laminated glass. E. I. DU PONT DE NEMOURS & CO. 11 July, 1969 [12 July, 1968], No. 35033/69. Heading B5N. [Also in Divisions C2, C3 and D1] A tinting ink comprising polyvinyl butyral, Violet 2R Base, Oil Blue A and 2,4-bis(2,4-dihydroxyphenyl)quinazoline (as photostabilizer) in dimeth...

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Bibliographic Details
Main Authors RICHARD PATER, JAN-ERIK ANDERS OTTERSTEDT
Format Patent
LanguageEnglish
Published 25.01.1972
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
HETEROCYCLIC COMPOUNDS
LAUNDERING
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
TEXTILES
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OF TEXTILES OR THE LIKE
TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:1,249,370. Laminated glass. E. I. DU PONT DE NEMOURS & CO. 11 July, 1969 [12 July, 1968], No. 35033/69. Heading B5N. [Also in Divisions C2, C3 and D1] A tinting ink comprising polyvinyl butyral, Violet 2R Base, Oil Blue A and 2,4-bis(2,4-dihydroxyphenyl)quinazoline (as photostabilizer) in dimethylformamide is printed on plasticized polyvinylbutyral sheeting, the latter seasoned at 65 degrees for 6 days, conditioned to 23% relative humidity and laminated in clear plate and heat absorbing glass. The products are useful as tinted automotive windshields.
Bibliography:Application Number: USD3637693