SHEET AND LAMINAR MATERIAL FROM THERMOPLASTIC RESIN Russian patent published in 2010 - IPC B32B27/00 C08L29/14 B32B27/22 B32B27/18 C03C27/12 

FIELD: process engineering.

SUBSTANCE: invention relates to sheet from thermoplastic resin to be used as a film for multilayer glass. Sheet has laminar structure and comprises layer made from first poly(vinyl acetal) resin (A) made on both sides of the layer made from second poly(vinyl acetal) resin (B). Layer from first poly(vinyl acetal) resin (A) consists of the products of acetylation of poly(vinyl alcohol) by aldehyde (a) consisting of 4 to 6 carbon atoms. Layer from second poly(vinyl acetal) resin (B) consists of the products of acetylation of poly(vinyl alcohol) by aldehyde (a) consisting of 4 to 6 carbon atoms, and aldehyde (b) consisting of 1 to 3 carbon atoms. Note here that polymer link (X) representing acetylated link of poly(vinyl acetal) resin produced from first aldehyde (a) and polymer link (Y) representing acetylated link of poly(vinyl acetal) resin produced from first aldehyde (b) that, combined, make 55 % (mole). Only first of said first polymer link (X) makes 0.5 to 80 % (mole) per cumulative product of co-acetylation.

EFFECT: higher resistance against penetration in the range of low- to high-temperatures.

30 cl, 18 ex, 10 tbl, 1 dwg