| 摘要 |
1,166,897. Laminated glass. LIBBEYOWENS-FORD CO. 17 April, 1967 [25 April, 1966], No. 17510/67. Heading B5N. [Also in Division C3] A laminated glass unit includes two sheets of glass bonded together with a transparent sheet comprising 100 g. of polyvinyl butyral, 30- 50 g. of a plasticizer therefor and 0À1-5 g. milliequivalents of mono-potassium maleate citraconate, malate, malonate, phthalate and/or citrate. |
