B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/70
B05D 1/38 (2006.01) B32B 7/02 (2006.01) B32B 17/10 (2006.01) B65D 23/08 (2006.01) C03C 17/32 (2006.01) C08G 18/66 (2006.01)
Patent
CA 1127471
ABSTRACT OF THE DISCLOSURE An improved method of coating glass articles par- ticularly glass bottles, is disclosed whereby the plastic coating has superior properties. The articles are first treated with an aqueous or alcoholic silane size and dried and-then coated with a composition consisting of aliphatic and or cycloaliphatic diisocyanates or their conversion products with water in a 2: ? 1 molar ratio, and a mixture of compounds containing hydroxyl groups consisting of 40-80% by wt. trifunctional poly- ester polyols containing hydroxyl groups, from aliphatic and/or cycloaliphatic dicarboxylic acids and a mixture of triols or tricarboxylic acids and diols, with a mean molecular weight of 300 to 1,400, 15-50% by wt. bifunctional polyester polyols containing hydroxyl groups, from aliphatic and/or cycloaliphatic dicarboxylic acids and diols, with a mean molecular weight of 400 to 2,000 and, optionally, 2.5 - 25% by wt. aliphatic and/ or cycloaliphatic diols, referred to the total quantity of the polyester polyols. The coating is then hardened by the use of heat as required.
313197
Borden Ladner Gervais Llp
Chemical Werke Huls Aktiengesellschaft
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