| 摘要 |
<p>A composition and a sheet of such composition for laminated glazings comprising polyvinyl butyral resin plasticized with a mixture of a) dioctyl adipate (DOA) and b) an exudation-reducing amount of i) one or more monoesters of a glycol and a C16 to C20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule or ii) castor oil or iii) a mixture of i) and ii), the ratio of i) to ii) in the mixture of iii) being between about 1:1 to 5:1. On a weight basis the plasticizer mixture is about 65-95 %, preferably 70-90 %, DOA and 35-5 %, preferably 30-10 % of b).</p> |
