ACOUSTIC POLYMERIC INTERMEDIATE LAYERS, SUSTAINABLE TO DEFECTS FORMATION Russian patent published in 2017 - IPC B32B27/30 B32B17/10 C03C27/12 

FIELD: technological processes.

SUBSTANCE: polymer layer for multi-layer glass panels comprises three polymer layers containing plasticized polyvinyl butyral with a molecular weight less than 140,000 Da in which the second polymer layer is positioned between the first polymer layer and the third polymer layer to form a polymer intermediate layer with two outer layers and one inner layer.

EFFECT: creation of an intermediate layer for shatterproof glass, which provides glass with an increased level of sound insulation, reduced light transmission, and the absence of optical defects.

10 cl, 3 tbl, 4 dwg