发明授权
- 专利标题: Novel transparent polyurethane polyurea films for lamination of glazing materials and their method of production
- 专利标题(中): 用于层压玻璃材料的新型透明聚氨酯聚脲膜及其生产方法
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申请号: US947121申请日: 1978-09-29
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公开(公告)号: US4254176A公开(公告)日: 1981-03-03
- 发明人: Hanns P. Muller , Wolfgang Oberkirch , Kuno Wagner , Bernd Quiring
- 申请人: Hanns P. Muller , Wolfgang Oberkirch , Kuno Wagner , Bernd Quiring
- 申请人地址: DEX
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX
- 优先权: DEX2644434 19761001
- 主分类号: C03C27/12
- IPC分类号: C03C27/12 ; B32B7/12 ; B32B17/10 ; C08G18/00 ; C08G18/08 ; C08G18/12 ; C08G18/28 ; C08G18/65 ; C08G18/71 ; C08G18/75 ; C09J175/00 ; B29D7/02 ; C08G18/32
摘要:
The present disclosure is concerned with a novel transparent polyurethane polyurea which is particularly suitable for lamination to glass and glasslike transparent plastics. The polymer is the reaction product of high molecular weight diols, optionally low molecular weight diols, dihydroxy carboxylic acids, diisocyanates with only aliphatically and cycloaliphatically bound isocyanates and organic diamines having aliphatically and cycloaliphatically bound primary amino groups. It has specified contents of carboxyl groups and urea groups, and it has a minimum shear modulus at both 20.degree. and 60.degree. C.The present disclosure is also concerned with a process for synthesizing such polymers. A preferred method is to react the diisocyanate and hydroxyl bearing compounds to prepare an isocyanate terminated prepolymer and chain extend with the diamine.Also discussed are the production of film from these polymers by extrusion and solution casting, the production of laminates with glass and glasslike plastics and the laminates so produced. The solution cast or extruded films can be laminated to these substrates by the application of heat and pressure.
公开/授权文献
- US5851579A Aqueous enteric coating compositions 公开/授权日:1998-12-22
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