FILM FROM PLASTICIZER POLYVINYL(ISO)ACETAL Russian patent published in 2016 - IPC C08L29/14 C08J5/18 C08K5/10 B32B27/30 B32B17/10 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer films for use as an intermediate layer in multilayer safe glass or as an adhesive film in a photovoltaic module and concerns a film from a plasticizer polyvinyl(iso)acetal. Film contains a mixture of at least one nonaromatic plasticizer with a polarity expressed by formula 100×O/(C+H) is smaller than/equals to 9.4, herewith O, C and H are the number of atoms of oxygen, carbon and hydrogen in the corresponding molecule, and polyvinyl(iso)acetal with the content of polyvinyl(iso)acetal groups of 60-85 wt% and the content of polyvinyl alcohol groups of 14-40 wt%. Nonaromatic plasticizer is selected from a group consisting of dioctyl sebacate (DOS), dioctyl adipate (DOA), dioctyl phthalate (DOP), triethylene glycol-bis-2-propylhexanoate, triethylene glycol-bis-iso-nonanoate, di-2-butoxyethyl sebacate (DBES), triethylene glycol-bis-2-ethylhexanoate (3G8), di-isononyl ether of 1,2 cyclohexane dicarboxylic acid (DINCH). Films are used in automotive industry for windshields, in architectural industry for structural elements of faces or for producing photovoltaic modules.

EFFECT: invention provides higher efficiency of the film without aromatic plasticizers.

6 cl, 2 tbl