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公开(公告)号:US3413312A
公开(公告)日:1968-11-26
申请号:US55306166
申请日:1966-05-26
申请人: DOW CHEMICAL CO
发明人: MOSS RODNEY D , PAIGE JANET N
IPC分类号: B01J23/656 , B01J23/86 , B01J27/055 , C07D319/12
CPC分类号: B01J27/055 , B01J23/6567 , B01J23/868 , C07D319/12
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公开(公告)号:US3004969A
公开(公告)日:1961-10-17
申请号:US79299259
申请日:1959-02-13
申请人: DOW CHEMICAL CO
发明人: PAIGE JANET N
IPC分类号: A01N43/16 , C07D311/16
CPC分类号: A01N43/16 , C07D311/16
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公开(公告)号:US3501458A
公开(公告)日:1970-03-17
申请号:US3501458D
申请日:1967-02-06
申请人: DOW CHEMICAL CO
发明人: TOMALIA DONALD A , PAIGE JANET N
IPC分类号: C07D203/20 , C07D23/06
CPC分类号: C07D203/20
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公开(公告)号:US3004988A
公开(公告)日:1961-10-17
申请号:US79299359
申请日:1959-02-13
申请人: DOW CHEMICAL CO
发明人: PAIGE JANET N
IPC分类号: A01N43/16 , C07D311/16
CPC分类号: C07D311/16 , A01N43/16
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5.
公开(公告)号:US3567652A
公开(公告)日:1971-03-02
申请号:US3567652D
申请日:1968-05-17
申请人: DOW CHEMICAL CO
发明人: MOSS RODNEY D , PAIGE JANET N
IPC分类号: B01J23/656 , B01J23/86 , B01J27/055 , C07D319/12 , B01J11/82
CPC分类号: B01J27/055 , B01J23/6567 , B01J23/868 , C07D319/12
摘要: THE INVENTION RELATES TO A NEW AND IMPROVED PROCESS FOR PREPARING 2,3-DIHYDRO-PARA-DIOXIN. MORE PARTICULARLY THE PRESENT INVENTION CONCERNS THE PREPARTION OF 2,3DIHYDRO-PARA-DIOXIN BY THE SIMULTANEOUS DEHYDROGENATION AND DEHYDRATION OF DIETHYLENE GLYCOL IN THE LIQUID PHASE USING A COPPER CHROMITE CATAYST PROMOTED WITH AN ALKALI META ACID SULFATE OR AN ALKALIMETAL PYROSULFATE.
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公开(公告)号:US3563920A
公开(公告)日:1971-02-16
申请号:US3563920D
申请日:1969-06-16
申请人: DOW CHEMICAL CO
发明人: TOMALIA DONALD A , PAIGE JANET N
IPC分类号: C07D263/10 , C07D263/14 , C07D265/08 , C08G8/00 , C08G59/50 , C08G69/00 , C08G73/02 , C07D85/36 , C08G33/02 , C08G45/00
CPC分类号: C07D263/10 , C07D263/14 , C07D265/08 , C08G59/5046 , C08G69/00 , C08G73/02
摘要: (-O-CH2-(CH(-R''))N-CH2-N=)>C-R-X-R-C AND, OPTIONALLY, ALSO UNITS OF THE FORMULA
-((CH2)G-N(-)-CO-R-X-R-CO-N(-)-(CH2)G)M-
WHEREIN R IS ALKYLENE, PHENYLENE, VINYLENE, OR PHENYLENEALKYLENE, WHEREIN, "ALKYLENE" ALONE OR IN A COMBINED NAME, DESIGNATES AN ALKYLENE MOIETY THAT IS OF FROM 1 TO 10 CARBON ATOMS, AND X IS -S- OR -O-; N IS ZERO OR 1; OPTIONALLY ALSO WITH AN OXAZOLINE AS COMONOMER, ARE CATIONICALLY POLYMERIZED TO POLYMERS CONTAINING RECURRING UNITS OF THE FORMULA
O-)
WHEREIN G IS AN INTEGER 2 OR 3, M REPRESENTS THE DEGREE OF POLYMERIZATION, AND R'' IS HYDROGEN OR A SPECIFIED RADICAL.
-CH2-CH2-N(-CO-R'')-
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