公开(公告)号：US3770834A

公开(公告)日：1973-11-06

申请号：US3770834D

申请日：1970-04-02

Applicant: HERCULES INC

Inventor： PROSSER T

IPC: C07C201/00 ,  C07C205/22 ,  C07C207/04 ,  C07C39/02 ,  C07C79/22

CPC classification number: C07C201/06 ,  C07C201/00 ,  C07C205/22 ,  C07C207/04

Abstract: DISCLOSED IS A PROCESS FOR NITROSATING NITROSATABLE PHENOLIC MATERIAL. NITROGEN TRIOXIDE AND THE PHENOLIC MATERIAL ARE INTRODUCED SIMULTANEOUSLY AT SPECIFIC RATES INTO AN AGITATED, ACIDIC, AQUEOUS MEDIUM ESTABLIXHED AND MAINTAINED IN THE TEMPERATURE RANGE FROM ABOUT -20 TO ABOUT 20* C., AND HAVING AN INITIAL CONCENTRATION OF NITROUS ACID IN A RANGE FROM ANOUT 0 TO ABOUT 1% BY WEIGHT OF THE AQUEOUS MEDIUM. THE INITIAL PH OF THE AQUEOUS MEDIUM IS LESS THAN ABOUT 5, PREFERABLY ABOUT 1, AND COMPRISES WATER AND, DISSOLVED IN THE WATER, ACID MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE STRONG ACIDS LIKE NITRIC ACID AND SULFURIC ACID. THE RATE OF INTRODUCTION OF THE PHENOLIC MATERIAL INTO THE AQUEOUS MEDIUM IS PREFERABLY SUBSTANTIALLY THE RATE AT WHICH THE PHENOLIC MATERIAL IS NITROSATED IN THE AQUEOUS MEDIUM. THE RATE OF INTRODUCTION OF NITROGEN TRIOXIDE INTO THE AQUEOUS MEDIUM IS SUBSTANTIALLY AT THE RATE AT WHICH A SLIGHT STOICHIOMETRIC EXCESS, RELATIVE TO THE PHENOLIC MATERIAL BEING INTRODUCED INTO THE AQUEOUS MEDIUM OF NITROUS ACID IS ESTABLISHED AND MAINTAINED IN THE REACTION MEDIUM. AS REACTION TAKES PLACE NITROSATED PHENOLIC PRODUCT FORMS AND PRECIPITATES. PREFERABLY THE REACTION MIXTURE THAT RESULTS IS MAINTAINED WITH AGITATION IN THE TEMPERATURE RANGE UNTIL THE REACTION IS SUBSTANTIALLY COMPLETE, AND THEN THE PRECIPITATED NITROSATED PHENOLIC PRODUCT IS SEPARATED FROM THE REACTION MIXTURE.

公开(公告)号：BR7706655A

公开(公告)日：1978-07-18

申请号：BR7706655

申请日：1977-10-05

Applicant: HERCULES INC

Inventor： PROSSER T

IPC: C08F8/00 ,  C08F8/48 ,  C08F10/06

Abstract: Disclosed is a process for the conversion of stereoregular or crystallizable forms of polypropylene to the amorphous atactic form.

公开(公告)号：DK119506B

公开(公告)日：1971-01-18

申请号：DK180668

申请日：1968-04-23

Applicant: HERCULES INC

Inventor： PROSSER T

IPC: C07C201/00 ,  C07C205/22 ,  C07C207/04 ,  C07C79/00 ,  C07C79/26