发明授权
- 专利标题: Lightly modified prepolymers and uses thereof
- 专利标题(中): 轻度改性预聚物及其用途
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申请号: US13809147申请日: 2011-07-11
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公开(公告)号: US09487616B2公开(公告)日: 2016-11-08
- 发明人: Hans-Georg Pirkl , Manfred Schmidt , Reinhard Albers , Johannes Braak , Rolf Roers
- 申请人: Hans-Georg Pirkl , Manfred Schmidt , Reinhard Albers , Johannes Braak , Rolf Roers
- 申请人地址: DE Leverkusen
- 专利权人: Covestro Deutschland AG
- 当前专利权人: Covestro Deutschland AG
- 当前专利权人地址: DE Leverkusen
- 代理机构: K&L Gates LLP
- 优先权: DE102010027052 20100713; DE102011050220 20110509
- 国际申请: PCT/EP2011/061738 WO 20110711
- 国际公布: WO2012/007418 WO 20120119
- 主分类号: C08G18/42
- IPC分类号: C08G18/42 ; C08G18/83 ; C08G18/10 ; C08G18/44 ; C08G18/48 ; C08G18/50 ; C08G18/76 ; B32B5/18 ; B32B15/04 ; B32B15/18 ; B32B27/06 ; B32B27/40 ; C08G101/00
摘要:
An isocyanate-terminated prepolymer C having an NCO content of from ≧26% by mass to ≦31.0% by mass is obtainable from the reaction of an isocyanate composition A having a viscosity at 25° C. of from ≧60 mPas to ≦800 mPas, comprising from ≧25% by mass to ≦60% by mass MDI and from ≧40% by mass to ≦75% by mass pMDI, wherein the sum of the amounts of those components is ≦100% by mass, with a bifunctional polyester ether polyol B having an OH number of ≧200 mg(KOH)/g and ≦500 mg(KOH)/g, obtained from the reaction of a dicarboxylic acid/dicarboxylic acid derivative with at least one polyol and with an epoxide, wherein the polyester ether polyol B is used in amounts of from ≧1.5% by mass to ≦6.0% by mass, based on the sum of the masses of A and B. The invention further provides a PUR/PIR polymer produced from the prepolymer C, its use and composite elements based thereon.
公开/授权文献
- US20130183880A1 SLIGHTLY MODIFIED PREPOLYMERS AND THEIR USES 公开/授权日:2013-07-18