Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1974-09-30
1976-07-27
McCamish, Marion E.
Stock material or miscellaneous articles
Composite
Of polyamidoester
427416, 427443, 428426, 428484, B32B 2740
Patent
active
039718646
ABSTRACT:
Retarding bloom in normally blooming polyurethane interlayers which are used in laminated windows, particularly motor vehicle safety glass windows in which one major surface of the polyurethane is exposed to the atmosphere, by applying a layer of wax to the exposed major surface of the polyurethane interlayer is disclosed. The resulting window is free from bloom for at least several months.
REFERENCES:
patent: 2962390 (1960-11-01), Fain et al.
patent: 3171825 (1965-03-01), Mark
patent: 3616191 (1971-10-01), Fuerholzer et al.
patent: 3670049 (1972-06-01), Stein
Testro "Blushing: Blooming in Product Finishing" (London) pp. 79-82 May 1954.
Beestrice William R.
Cherenko Joseph
Frey William I.
Mates Edward I.
McCamish Marion E.
PPG Industries Inc.
Roche R. J.
Uhl William J.
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