发明名称 |
PROCESSO PARA REMOVER FORMADORES DE COR A PARTIR DE PRODUTOS POLIMERICOS DE CONDENSACAO DE FENOL-FORMALDEIDO SULFONADOS,PARA PROPORCIONAR PRODUTOS DE CONDENSACAO APRESENTANDO MENOS TENDENCIA A FICAREM AMARELADOS E QUE PROPORCIONARAO RESISTENCIA CONTRA MANCHAS OU TINGIMENTOS A SUBSTRATOS TEXTEIS DE POLIAMIDA;E SUBSTRATO TEXTIL DE POLIAMIDA |
摘要 |
<p>Process for removing color-formers from polymeric sulfonated phenol-formaldehyde condensation products so as provide condensation products having reduced tendencies to turn yellow and which provide stain-resistance to polyamide textile substrates which comprises dissolving a polymeric sulfonated phenol-formaldehyde condensation product in an aqueous base, acidifying the resulting aqueous solution so as to form a slurry, heating the slurry so as to form a two-phase system comprising an aqueous solution and a water-insoluble taffy-like material, separating the aqueous solution and the water-insoluble material from one another, and dissolving the water-insoluble material in an aqueous base.</p> |
申请公布号 |
BR8901353(A) |
申请公布日期 |
1989.11.07 |
申请号 |
BR19898901353 |
申请日期 |
1989.03.22 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
LUANN RUE MARSHALL |
分类号 |
C08G8/00;C08G8/18;D06M15/41;D06M15/431;D06M101/00;D06M101/16;D06M101/30;D06M101/34;(IPC1-7):C08G14/12;C08G14/04 |
主分类号 |
C08G8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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