公开(公告)号：US3708440A

公开(公告)日：1973-01-02

申请号：US3708440D

申请日：1972-02-14

申请人： UPJOHN CO

发明人： FRULLA F ,  ODINAK A ,  SAYIGH A

IPC分类号： C08G18/00 ,  C08G18/82 ,  C08J11/00 ,  C08J11/18 ,  C08G53/22

CPC分类号： C08J11/24 ,  C08G18/1808 ,  C08G18/1825 ,  C08G18/1858 ,  C08G18/3878 ,  C08G18/4607 ,  C08G18/4615 ,  C08G18/5024 ,  C08G18/6677 ,  C08G18/7664 ,  C08G2101/00 ,  C08G2101/0025 ,  C08G2105/02 ,  C08J9/147 ,  C08J2201/022 ,  C08J2203/144 ,  C08J2375/04 ,  Y02W30/706

摘要： A PROCESS IS DISCLOSED FOR CONVERTING SCRAP POLYISOCYANURATE FOAM INTO A POLYOL WHICH CAN BE USED, WITHOUT THE NEED FOR ANY FURTHER TREATMENT, AS THE POLYOL COMPONENT IN THE PREPARATION OF POLYURETHANE AND RELATED FOAMS. THE PROCESS COMPRISES HEATING THE SCRAP AT ABOUT 175* C. TO ABOUT 250* C. IN THE PRESENCE OF A MIXTURE OF (A) AN ALIPHATIC DIOL HAVING FROM 2 TO 6 CARBON ATOMS, INCLUSIVE, AND A BOILING POINT ABOVE ABOUT 180* C. AND (B) A DIALKANOLAMINE HAVING FROM 4 TO 8 CARBON ATOMS, INCLUSIVE, THE DIALKANOLAMINE CONSTITUTING FROM ABOUT 2 PERCENT TO ABOUT 20 PERCENT BY WEIGHT OF THE MIXTURE.

公开(公告)号：US3738946A

公开(公告)日：1973-06-12

申请号：US3738946D

申请日：1971-08-05

申请人： UPJOHN CO

发明人： SAYIGH A ,  FRULLA F ,  ODINAK A

IPC分类号： C07C43/11 ,  B29B11/00 ,  B29B17/00 ,  C07C27/00 ,  C07C29/128 ,  C07C31/20 ,  C07C41/00 ,  C07C67/00 ,  C07C213/00 ,  C07C213/10 ,  C07C215/12 ,  C08G18/00 ,  C08G18/54 ,  C08G18/82 ,  C08J11/18 ,  C08G41/00 ,  C08G53/22

CPC分类号： B29C43/003 ,  B29K2105/26 ,  C08G18/546 ,  C08J11/18 ,  C08J2375/04 ,  Y02W30/706

摘要： A PROCESS IS DISCLOSED FOR COVERING SCAP POLYURETHANE INTO A POLYOL WHICH IS RE-USABLE WITHOUT THE NEED FOR PURIFICATION IN THE PREPARATION OF POLYURETHANE FOAM. THE PROCESS COMPRISES HEATING THE SCRAP AT ABOUT 175*C. TO ABOUT 250*C. (PREFERABLY AT 185 TO 225*C.) IN THE PRESENCE OF A DIHYDROXY COMPOUND CONSISTING OF (I) FROM 100 PERCENT TO 90 PERCENT BY WEIGHT OF AN ALIPHATIC DIOL HAVING FROM 2 TO 6 CARBON ATOMS, INCLUSIVE, AND HAVING A BOILING POINT ABOVE ABOUT 180*C. AND (II) FROM 0 PERCENT TO 10 PERCENT BY WEIGHT OF A DIALKANOLAMINE HAVING FROM 4 TO 8 CARBON ATOMS, INCLUSIVE. THE PROCESS IS PARTICULARLY ADVANTAGEOUS IN THE RECOVERY OF USEFUL POLYOLS FROM SCRAP RIGID POLYURETHANE FOAMS DERIVED FROM A POLYMETHYLENE POLYPHENYL POLYISOCYANATE AND A POLYOL OBTAINED BY REACTION OF PROPYLENE OXIDE WITH A MIXTURE OF POLYMETHYLENE POLYPHENYL POLYAMINES PRODUCED BY ACID CONDENSATION OF ANILINE AND FORMALDEHYDE.

公开(公告)号：US3717683A

公开(公告)日：1973-02-20

申请号：US3717683D

申请日：1970-01-12

申请人： UPJOHN CO

发明人： VON E DOERING W ,  FARRISSEY W ,  FRULLA F ,  SAYIGH A

IPC分类号： C07C37/045 ,  C07C37/07 ,  C07C37/00

CPC分类号： C07C37/045 ,  C07C39/08

摘要： A NOVEL PROCESS FOR PREPARING HYDROQUINONE BY CONVERSION OF P-NITROSOPHENOL IS DISCLOSED.