Abstract: The invention is directed to multilayer sound dampening interlayer films comprising ethylene vinyl acetals.

Abstract: An interlayer film for laminated glazing has at least one first and at least one second layer, each layer containing plasticized polyvinyl acetal, the first layer comprising polyvinyl acetal having a polyvinyl alcohol content from 10 to 16% by weight and a plasticizer content of at least 33% by weight, wherein the interlayer film has a total plasticiser content of at least 29% by weight and, when laminated between two glass panes of 2.1 mm thickness, exhibits after at least 4 weeks aging after lamination, a second mode frequency f2 according to ISO PAS 16940 of less than 720 Hz.

Abstract: A fluorescent display suitable for use in a heads up display contains a laminated glass structure containing a plasticized polyvinyl acetal film, at least one fluorophore, and at least one UV absorber, wherein the fluorophore and UV absorber are and remain spatially separated in the laminating film such that UV light projected from a display generating projector remains able to activate the fluorophores, and a UV component of sunlight has lessened ability to activate the fluorophore.

Abstract: A fluorescent display suitable for use in a heads up display contains a laminated glass structure containing a plasticized polyvinyl acetal film, at least one fluorophore, and at least one UV absorber, wherein the fluorophore and UV absorber are and remain spatially separated in the laminating film such that UV light projected from a display generating projector remains able to activate the fluorophores, and a UV component of sunlight has lessened ability to activate the fluorophore.

Abstract: The invention relates to an intermediate layer film for laminated glazing, constructed from at least one first and at least one second sub-film containing plasticiser-containing polyvinyl acetal each with different plasticiser content, wherein the first sub-film consists of plasticiser-containing polyvinyl acetal with a polyvinyl alcohol content from 17 to 22% by weight, and the second sub-film consists of plasticiser-containing polyvinyl acetal with a polyvinyl alcohol content from 11 to 14% by weight, and the intermediate layer film has a total plasticiser content of less than 28% by weight. The film can be used in particular for windscreens with use of glasses with a total thickness of less than 3.7 mm.

Abstract: Film laminates are formed from at least three layers A, B and C, each containing at least one plasticizer and at least one polyvinyl acetal, wherein two outer layers A and C each contain at least one identical or different polyvinyl acetal having a proportion of polyvinyl alcohol groups of 18.5 to 23% by weight, at least one inner layer B contains a polyvinyl acetal having a proportion of polyvinyl alcohol groups of 12 to 18% by weight, and at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal. The film laminates can be used for the production of glass/film laminate/glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules.

Abstract: The invention relates to film laminates, formed from at least three layers A, B and C, each layer containing at least one plasticizer and at least one polyvinyl acetal, wherein, at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal having a mean degree of polymerization of less than 3000, 10 to 25% by weight of polyvinyl alcohol groups and a proportion 50 to 80% by weight of polyvinyl (iso)acetal groups, and wherein layer B has a plasticizer content of less than 32% by weight. The film laminates can be used for the production of glass/film laminate/glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules.

Abstract: Provided is an interlayer film for laminated glass comprising: a layer x which contains polyvinyl acetal (A1) having a content of vinyl alcohol units of 22 mol % or less, a plasticizer (B), heat ray shielding microparticles (C), phosphoric acid ester (D), and alkali metal salt and/or alkali earth metal salt (F), and has an acid number in accordance with JIS K2501 of 1.5 KOH mg/g or less; and a layer y containing polyvinyl acetal (A2) having a content of vinyl alcohol units of from 25 to 34 mol %, the plasticizer (B), and an ultraviolet absorber (E), wherein the layers y are located on both sides of the layer x. This enables to provide an interlayer film for laminated glass that is excellent in transparency, adhesion, durability, sound insulation, and a heat ray shielding property.

Abstract: Film laminates are formed from at least three layers A, B and C, each containing at least one plasticizer and at least one polyvinyl acetal, wherein two outer layers A and C each contain at least one identical or different polyvinyl acetal having a proportion of polyvinyl alcohol groups of 18.5 to 23% by weight, at least one inner layer B contains a polyvinyl acetal having a proportion of polyvinyl alcohol groups of 12 to 18% by weight, and at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal. The film laminates can be used for the production of glass/film laminate/glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules.

Abstract: Plasticizer-containing films based on polyvinyl acetal containing a UV absorbers of the oxanilide type of formula (1) exhibit high UVA transmission while also exhibiting low UVB transmission, with reduced tendency to yellow.

Abstract: The invention relates to film laminates, formed from at least three layers A, B and C, each layer containing at least one plasticizer and at least one polyvinyl acetal, wherein, at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal having a mean degree of polymerisation of less than 3000, 10 to 25% by weight of polyvinyl alcohol groups and a proportion 50 to 80% by weight of polyvinyl (iso)acetal groups, and wherein layer B has a plasticizer content of less than 32% by weight. The film laminates can be used for the production of glass/film laminate/glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules.

Abstract: A film contains a mixture of at least one non-aromatic plasticizer having a polarity, expressed by the formula 100×O/(C+H), of less than/equal to 9.4 wherein O, C and H represent the number of oxygen, carbon and hydrogen atoms in the respective molecule, and a polyvinyl (iso)acetal having a proportion of polyvinyl (iso)acetal groups of 60 to 85% by weight and a proportion of polyvinyl alcohol groups of 14 to 40% by weight. The films may be used in the automotive industry, in windscreens, in the field of architecture, in façade components, or for the production of photovoltaic modules.

Abstract: An interlayer film for laminated glass with sound-absorbing properties contains at least two individual films, wherein the first individual film comprises a polyvinyl acetal with a portion of polyvinyl acetate groups of 0.1 to 11 mol % and a second individual film comprises a polyvinyl acetal with a portion of polyvinyl acetate groups of between 5 and 8 mol %.

Abstract: Plasticizer-containing films based on polyvinyl acetal containing a UV absorbers of the oxanilide type of formula (1) exhibit high UVA transmission while also exhibiting low UVB transmission, with reduced tendency to yellow.

Abstract: An interlayer film for laminated glass with sound-absorbing properties contains at least two individual films, wherein the first individual film comprises a polyvinyl acetal with a portion of polyvinyl acetate groups of 0.1 to 11 mol % and a second individual film comprises a polyvinyl acetal with a portion of polyvinyl acetate groups of between 5 and 8 mol %.