发明授权
- 专利标题: Water-dispersible binder composition, a process for the production of a stoving filler and a coating prepared therefrom
- 专利标题(中): 水分散性组合物,生产填充填料的方法及其制备的涂料
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申请号: US602595申请日: 1990-10-24
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公开(公告)号: US5126393A公开(公告)日: 1992-06-30
- 发明人: Harald Blum , Jurgen Meixner , Josef Pedain , Hans-Heribert Burgdorfer
- 申请人: Harald Blum , Jurgen Meixner , Josef Pedain , Hans-Heribert Burgdorfer
- 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: DEX3936288 19891101
- 主分类号: C08G18/00
- IPC分类号: C08G18/00 ; B01F17/42 ; C08G18/08 ; C08G18/10 ; C08G18/12 ; C08G18/42 ; C08G18/66 ; C08G18/75 ; C09D161/20 ; C09D175/06
摘要:
The present invention relates to a water-dispersible binder composition which is suitable for the production of a stoving filler to be processed from the aqueous phase and which containsa) 65 to 95% by weight of a urethane-modified polyester resin containing carboxyl groups,b) 5 to 35% by weight of a crosslinker resin andc) 0 to 2% by weight of an emulsifier,wherein the percentages are based on the total weight of components a) to c), characterized in that component a) has an acid value of 15 to 36, a hydroxyl value of at least 40 and a molecular weight (M.sub.w) of 5,000 to 50,000 and has been obtained by reactinga1) 72 to 80% by weight of a polyester polyol having a hydroxyl value of 130 to 200 and an acid value of 1 to 5 anda2) 4 to 7% by weight of a 2,2-bis-(hydroxymethyl)-alkane carboxylic acid or a quantity corresponding to this quantity of acid of a tertiary amine salt of such an acid witha3) 15 to 24% by weight of at least one cycloaliphatic diisocyanate having a molecular weight of 166 to 294,wherein the percentages are based on the total weight of components a1) to a3).The present invention also relates to a process for the production of an aqueous stoving filler which is suitable for the production of chip resistant coatings and to the chip resistant coatings produced therefrom.
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