Kuraray Europe Gmbh

Dritte Patentportfolio Beteiligungsgesellschaft Mbh &Co. Kg

Kuraray Specialities Europe Gmbh

Ht Troplast Ag

Kuraray Co., Ltd.

Holger Stenzel

Uwe Keller

Martin Steuer

Bernd Papenfuhs

Jan Beekhuizen

Alexander Kraft

Andreas Karpinski

Karl-Heinz Heckner

Matthias Rottmann

Bernhard Koll

Manfred Hoss

Bernard Koll

Helmut Ridder

Joachim Schnieder

An ion-conductive thermoplastic compositions contains a partially acetalated polyvinyl alcohol, at least one support electrolyte and at least one plasticizer. The partially acetalated polyvinyl alcohol contains two different acetal units. Electrochromic laminated glass systems produced using the ion-conductive compositions and a method for producing the systems are also provided.

Ion-conductive thermoplastic composition, electrochromic composite system and process for producing ion-conductive foil

The invention relates to a plastic film, at least one side of which is provided with a surface structure comprising parallel rows of elevations (a). Said elevations (a) are interconnected by means of webs (b) that are at least 10 percent lower than the elevations (a). The inventive films can be used for producing laminated glass.

Embossed plastic films for laminated glass

The invention relates to ion-conductive thermoplastic compositions consisting of a partially acetalated polyvinyl alcohol, at least one support electrolyte and at least one softener, the partially acetalated polyvinyl alcohol containing two different acetal units. The invention also relates to electrochromic laminated glass systems produced using the ion-conductive compositions and to a method for producing said systems.

Ion-conductive thermoplastic compositions for electrochromic glazing

Plasticized films suitable as an intermediate layer in laminated safety glass and based on partially acetalized polyvinyl alcohols, in particular PVB, have not only the required excellent adhesion to glass but also undesired self-adhesion (susceptibility to blocking). Amounts of from 0.001 to 0.1% by weight of a pentaerythritol ester are proposed for use as an additive which reduces self-adhesion. This additive does not alter the adhesion of the film to glass. The invention is used for producing films for the production of laminated safety glass. The need to cool the films for stacking or wind-up is substantially eliminated.

Film for composite security disks with self-adhesiveness

The present invention relates to a plasticized foil based on a partially acetalized polyvinyl alcohol (PVB resin) and suitable as an intermediate layer in a laminated safety glass, and comprising:

PVB film containing a plastifying agent

Known intermediate foils for compound glasses with improved sound insulation consist of several layers or special materials which cannot be further processed in conventional plants. The aim of the present invention is to provide an intermediate foil for compound glasses with improved sound insulation, whereby said foil consists of one layer as far as possible and is based upon PVB. Said intermediate foil allows for an improved sound insulation of the compound glasses in room temperature and has essentially unchanged working properties, whereby said compound glasses are produced from the intermediate foil. To resolve the aim of the invention, an intermediate foil is provided which contains: 50 to 80 wt. % PVB (partially acetalised polyvinyl alcohol), 20 to 50 wt. % of a softener mixture containing 30 to 70 wt. %, calculated as a portion of the softener mixture, of one or more polyalkylene glycoles of the group consisting of polyalkylene glykoles of the general formula HO&#x2014;(R&#x2014;O)n-H with R=alkylene and n&#x3e;5, block copolymers made of ethylene- and propylene glycole of the general formula HO&#x2014;(CH2-CH2-O)n-(CH2-CH(CH3)-O)m-H with n&#x3e;2, m&#x3e;3 and (n+m)&#x3c;25, derivatives of block copolymers made of ethylene- and propylene glycole of the general formula R1O&#x2014;(CH2-CH2-O)n-(CH2-CH(CH3)-O)m-H or HO&#x2014;(CH2-CH2-O)n-(CH2-CH(CH3)-O)m-R1 with n&#x3e;2, m&#x3e;3 and (n+m)&#x3c;25 and R1 as the organic radical, derivatives of polyalkylene glycols of the general formula R1-O&#x2014;(R2-O)n-H with R2=alkylene and n&#x3e;2, wherein the hydrogen of one of the two terminal hydroxygroups of the polyalkylene glycol is replaced by an organic Rest R1, derivatives of polyalkylene glycols of the general formula R1-O&#x2014;(R2-O)n-R3 with R2=alkylene and n&#x3e;5, wherein the hydrogen of the two terminal hydroxygroups of the polyalkylene glycol is replaced by an organic Rest R1 or R3.

Compound safety glass and PVB foil for the production thereof

Growing community of inventors

Hennef, Germany

Holger Stenzel