| 摘要 |
<p>1,137,188. Glass laminates. P.P.G. INDUSTRIES Inc. 23 Feb., 1966 [24 Feb., 1965], No. 7882/66. Heading B5N. [Also in Division C3] A laminated glass article contains a glass member bonded by means of a polyurethane layer to another member, the polyurethane being made by the reaction of an organic polyisocyanate and a polyfunctional organosilicon compound having at least two active hydrogen-containing groups, the number of active hydrogen atoms per average molecule of said organosilicon compound being greater than two. The polyurethane is produced in situ. The glass member may be bonded to a further glass layer or to a layer of plastics material. Many polyisocyanates and organosilicon compounds are specified. .</p> |
