发明授权
US4687850A Purification of 1-(2-amino-2-alkylpropyl)-3,3,5,5-tetraalkylpiperazinones
失效
纯化1-(2-氨基-2-烷基丙基)-3,3,5,5-四烷基哌嗪酮
- 专利标题: Purification of 1-(2-amino-2-alkylpropyl)-3,3,5,5-tetraalkylpiperazinones
- 专利标题(中): 纯化1-(2-氨基-2-烷基丙基)-3,3,5,5-四烷基哌嗪酮
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申请号: US677667申请日: 1984-12-03
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公开(公告)号: US4687850A公开(公告)日: 1987-08-18
- 发明人: Pyong-Nae Son , Charles P. Jacobs
- 申请人: Pyong-Nae Son , Charles P. Jacobs
- 申请人地址: OH Akron
- 专利权人: The B.F. Goodrich Company
- 当前专利权人: The B.F. Goodrich Company
- 当前专利权人地址: OH Akron
- 主分类号: C08K5/34
- IPC分类号: C08K5/34 ; C07D241/08 ; C08K5/00 ; C08K5/3442 ; C08K5/3462
摘要:
Novel piperazinones having the formula ##STR1## are useful UV stabilizers and are purified by fractional distillation in the presence of an inorganic base.
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