Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1978-09-06
1980-07-01
Smith, Ronald H.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
215DIG6, 427 29, 427302, 427314, 427386, 4274072, 428417, 428429, 428447, 428448, 528 45, B65D 1122, B05D 302
Patent
active
042106877
ABSTRACT:
A method for the coating of glass surfaces in order to prevent the scattering of glass particles upon bursting, with a transparent, duroplastic protective coat by depositing a paste of hydroxy group-containing 1,2-epoxy compounds with at least one 1,2-epoxide group in the molecule and a lower melting point of more than 40.degree. C. and hardening agents, and hardening the overlay at higher temperatures; which comprises first treating the clean glass surface with an aqueous or alcoholic silane skim coat, drying said surface if necessary and thereafter warming said surface to a temperature up to 120.degree. C., coating the glass surface with said paste of hydroxy group containing 1,2-epoxy compounds and hardening said paste with further addition of heat, wherein said hardening agents are polyisocyanates blocked with cyclic amidines of the general formula ##STR1## wherein the R's are the same or different substituents selected from the group consisting of hydrogen, alkyl-, cycloalkyl-, arylalkyl- and aryl, wherein the hardening agent is added in an amount of 2-15% by weight, calculated with respect to the amount of 1,2-epoxide compounds.
REFERENCES:
patent: 2854354 (1958-09-01), Gottlieb
patent: 3708321 (1973-01-01), Spieles
patent: 3926875 (1975-12-01), Tsugukuni et al.
patent: 4060655 (1977-11-01), Johannes et al.
patent: 4092953 (1978-06-01), Waugh
patent: 4096291 (1978-06-01), Dunwald et al.
Dormann Gunter
Gras Rainer
Obendorf Johann
Wolf Elmar
Chemische Werke Huls Aktiengesellschaft
Page Thurman K.
Smith Ronald H.
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