发明名称 |
WERKWIJZE VOOR HET ISOLEREN VAN EEN POLYMERE KLEURSTOF EN WERKWIJZE VOOR HET VERKLEUREN VAN LEVENSMIDDELEN MET DEZE KLEURSTOF. |
摘要 |
Polymeric water-soluble colorants, characterized by containing not more than 1% of nonwater impurities having molecular weights below about 1000 are disclosod as is their achievement by a purification process comprising ultrafiltration of a crude aqueous solution of said colorants followed by spray-drying of the retentate resulting from said ultrafiltration. |
申请公布号 |
NL7710379(A) |
申请公布日期 |
1978.03.29 |
申请号 |
NL19770010379 |
申请日期 |
1977.09.22 |
申请人 |
DYNAPOL, INC. TE PALO ALTO, CALIFORNIE, VER. ST. V. AM. |
发明人 |
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分类号 |
A23L1/275;C08F6/04;C08F28/00;C09B35/50;C09B67/54;C09B69/00;C09B69/10 |
主分类号 |
A23L1/275 |
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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