INTERMEDIATE FILM FOR MULTILAYER GLASS AND MULTILAYER GLASS Russian patent published in 2019 - IPC C03C27/12 C03C27/02 B32B17/10 

FIELD: glass.

SUBSTANCE: intermediate film for multilayer glass, by means of which it may be difficult to form a gap caused by absence of an intermediate film in a sheet of multilayer glass. Intermediate film for multilayer glass according to the present invention is an intermediate film for multilayer glass having a single-layer structure or a structure of two or more layers, and comprises a first layer comprising a thermoplastic polymer, a first layer softening temperature of 60 °C or more, intermediate film has direction MD and direction TD, and as to coefficients of thermal shrinkage obtained when first inner part, second inner part and central part are heated for 2 minutes at 80 °C, respectively, the absolute value of the difference between the thermal shrinkage index MDMAX and the thermal shrinkage factor MDMIN is less than 10 %.

EFFECT: invention relates to an intermediate film and to a multilayer glass containing said intermediate film.

13 cl, 4 tbl, 5 dwg