Patent ID: 9657149
Date: 2017-05-23
CPC Classifications: B32B,C08J,C08K,H01L,Y02E

Claim:
1. A plasticizer-containing polyvinyl acetal laminating film comprising: a) a polyvinyl acetal polymer having a Tg less than 74° C. measured by differential scanning calorimetry in accordance with DIN 53765 with a heating rate of 10K/min over a temperature range of −50° C. to 150° C., the polyvinyl acetal having a Tg less than 74° C. present in an amount of from 60 to 90% by weight based on the weight of the plasticizer-containing polyvinyl acetal laminating film; and b) from 10 to 40% by weight based on the weight of the plasticizer-containing polyvinyl acetal laminating film of at least one cyclohexane dicarboxylic acid ester plasticizer having 4 to 17 C atoms in the ester groups of the at least one cyclohexane dicarboxylic acid ester plasticizer, wherein the plasticizer-containing film is of a thickness suitable for use as a laminating film in laminated safety glass or in photovoltaic modules.