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Stuttgart, Germany

Photochromic interlayer films for laminated glass are composed of at least two individual films based on plasticizer-containing polyvinyl acetal, individual films of the interlayer film containing at least one photochromic compound, wherein the individual films having photochromic compounds have glass transition temperatures which differ from each other by at least 5 K.


Patent
Kuraray Europe GmbH | Date: 2015-04-16

Fluorescent displays are manufactured by lamination of at least one film A containing a polyvinyl acetal PA and, optionally, a plasticizer WA and at least one film B containing a polyvinyl acetal PB and at least one plasticizer WB between two glass panes, wherein prior to lamination, film A contains less than 22 wt. % plasticizer WA and contains 0.001 to 5 wt. % fluorophores, and film B contains at least 22 wt. % plasticizer WB and contains 0.005-5 wt. % UV absorber, each before lamination.


Patent
Kuraray Europe GmbH | Date: 2015-04-16

The invention relates to the use of one or more UV absorbers of the formulae (1a), (1b), (2) or (3) in films formed from plasticiser-containing polyvinyl acetal


Patent
Kuraray Europe GmbH | Date: 2014-01-27

Laminated glass is produced by laminating at least one film A, having a glass transition temperature TA and containing a polyvinyl acetal PA and optionally at least one plasticiser WA, and at least one film B, having a glass transition temperature TB and containing a polyvinyl acetal PB and at least one plasticiser WB, between two glass sheets, wherein, before the lamination process,


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.

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