发明授权
- 专利标题: Anthraquinone colorants
- 专利标题(中): 蒽醌着色剂
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申请号: US35163申请日: 1979-05-02
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公开(公告)号: US4249007A公开(公告)日: 1981-02-03
- 发明人: Leonard A. Bunes
- 申请人: Leonard A. Bunes
- 申请人地址: CA Palo Alto
- 专利权人: Dynapol
- 当前专利权人: Dynapol
- 当前专利权人地址: CA Palo Alto
- 主分类号: C07D221/18
- IPC分类号: C07D221/18 ; C09B1/20 ; C09B5/14 ; C09B69/10
摘要:
Red colors having the anthraquinone structure ##STR1## are disclosed wherein R.sub.1 and R.sub.2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, and R.sub.3 and R.sub.4 are independently selected from hydrogens, alkyls and alkylsulfonates. Precursors are disclosed as well. In a preferred embodiment R.sub.4 is an alkyl-containing polymer linking a plurality of anthraquinones into a polymeric colorant especially useful as a nonabsorbable colorant for edibles.
公开/授权文献
- USD402183S Picture frame stablizer 公开/授权日:1998-12-08
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