Invention Grant
US5772909A Process for separation of vanillin from other chemicals by means of
azeotropic distillation with dibenzyl ether and mixtures of vanillin
and dibenzyl ether used in such process
失效
通过与二苄醚的共沸蒸馏和在此过程中使用的香草醛和二苄醚的混合物将香兰素与其他化学品分离的方法
- Patent Title: Process for separation of vanillin from other chemicals by means of azeotropic distillation with dibenzyl ether and mixtures of vanillin and dibenzyl ether used in such process
- Patent Title (中): 通过与二苄醚的共沸蒸馏和在此过程中使用的香草醛和二苄醚的混合物将香兰素与其他化学品分离的方法
-
Application No.: US552227Application Date: 1995-11-02
-
Publication No.: US5772909APublication Date: 1998-06-30
- Inventor: Thomas Jones , Jeffrey L. Finnan , Joseph Arvizzigno
- Applicant: Thomas Jones , Jeffrey L. Finnan , Joseph Arvizzigno
- Applicant Address: NY New York
- Assignee: International Flavors & Fragrances Inc.
- Current Assignee: International Flavors & Fragrances Inc.
- Current Assignee Address: NY New York
- Main IPC: A23L27/10
- IPC: A23L27/10 ; B01D3/36 ; C07C45/84 ; C07C47/58 ; C11B9/02 ; C09K3/00 ; A23L1/00
Abstract:
Vanillin is difficult to separate from second organic chemicals produced therewith such as parahydroxybenzaldehyde by conventional distillation or rectification because of the proximity of their boiling points. Vanillin can now be readily separated from such second organic chemicals by azeotropic distillation using as an effective azeotropic distillation agent, dibenzyl ether.
Public/Granted literature
- US4609524A Nuclear reactor component rods and method of forming the same Public/Granted day:1986-09-02
Information query
