公开(公告)号：EP0477593A1

公开(公告)日：1992-04-01

申请号：EP91114752.8

申请日：1991-09-02

Applicant: ELF ATOCHEM NORTH AMERICA, INC.

Inventor： Overgaard, Thomas Harvey ,  Verduce, Louis Philip

IPC: C07C215/12 ,  C07C213/10

CPC classification number: C07C213/10

Abstract: Off-color N-(C₄-C₁₀)alkyl di(C₂-C₃) alkanolamines purified and decolorized by vacuum distillation at a pressure within the range of 1 to 50 mm.Hg (1-50 torr) in the presence of water and or water-soluble metal borohydride whereby the distilled alkanolamine has a reduced APHA color rating which is maintained on storage.

Abstract translation: 在水存在下，通过真空蒸馏在1至50mmHg（1-50托）范围内的压力下纯化和脱色脱色N-（C 4 -C 10）烷基二（C 2 -C 3）烷醇胺，或 水溶性金属硼氢化物，其中蒸馏的链烷醇胺具有降低的APHA颜色等级，其保持在储存状态。

公开(公告)号：EP0477593B1

公开(公告)日：1995-01-18

申请号：EP91114752.8

申请日：1991-09-02

Applicant: ELF ATOCHEM NORTH AMERICA, INC.

Inventor： Overgaard, Thomas Harvey ,  Verduce, Louis Philip

IPC: C07C215/12 ,  C07C213/10

CPC classification number: C07C213/10