公开(公告)号：US5340654A

公开(公告)日：1994-08-23

申请号：US033586

申请日：1993-03-18

申请人： Naoki Ueda ,  Kenichi Asahina ,  Hirohumi Omura ,  Jiro Miyai

发明人： Naoki Ueda ,  Kenichi Asahina ,  Hirohumi Omura ,  Jiro Miyai

IPC分类号： B32B17/10 ,  B32B27/30

CPC分类号： B32B27/30 ,  B32B17/10009 ,  B32B17/10678 ,  B32B17/10761 ,  Y10T428/31909 ,  Y10T428/31942 ,  Y10T428/31946

摘要： An interlayer film for laminated glass comprising laminated layers of at least one layer (A) which comprises a plasticizer and polyvinyl acetal resin for which the number of carbon atoms in the acetal group is 4, 5 or 6 and the mole ratio of the average amount of the ethylene groups bonded to acetyl groups is 8-30 mole % of the total amount of the main chain ethylene groups, and at least one layer (B) which comprises a plasticizer and polyvinyl acetal resin for which the number of carbon atoms in the acetal group is 3 or 4 and the mole ratio of the amount of the average ethylene groups bonded to acetyl groups is 4 mole % or less of the total amount of the main chain ethylene groups.

摘要翻译： 一种夹层玻璃用中间膜，其包含至少一层（A）的叠层，所述层（A）包含缩醛基中的碳原子数为4,5或6的增塑剂和聚乙烯醇缩醛树脂，并且所述平均量的摩尔比 与乙酰基键合的亚乙基基团为主链亚乙基基团总量的8-30摩尔％，和至少一层（B），其包含增塑剂和聚乙烯醇缩醛树脂，其中碳原子数为 缩醛基为3或4，并且与乙酰基键合的平均亚乙基的量的摩尔比为主链亚乙基的总量的4摩尔％以下。