Patent ID: 9023463
Filing Date: 2015-05-05
Classification: B32B,C08K,C08L,Y10T

Abstract:
1. A multiple layer interlayer comprising: a first poly(vinyl butyral) layer having a concentration of about 0.01 to 0.6 wt. % of an antiblocking agent and having a thickness of less than 0.4 millimeters; and a second poly(vinyl butyral) layer disposed in contact with the first poly(vinyl butyral) layer, wherein the second poly(vinyl butyral) layer has no added antiblocking agent, wherein the interlayer has a haze value of less than 3%, and wherein the antiblocking agent is a fatty acid amide of the formula: wherein R is a hydrocarbon chain having about 12 to about 40 carbon atoms, and R