Oxidative carbonylation of monohydroxy aryl compounds by methyl formate
申请人:Bayer MaterialScience AG
公开号:EP2781503A1
公开(公告)日:2014-09-24
The field of the present invention relates to a process for continuously preparing alkylaryl carbonates and diarylcarbonates from methyl formate and at least one monohydroxy aryl compound in the presence of catalysts, and to the use thereof for preparation of polycarbonates.
The invention pertains to a method for making a fluoropolymer comprising an aqueous emulsion polymerization of one or more fluorinated monomers wherein said aqueous emulsion polymerization is carried out in the presence of at least one cyclic fluorocompound of the following formula (I):
wherein X
1
, X
2
, X
3
, equal or different from each other are independently selected among H, F, and C
1-6
(per)fluoroalkyl groups, optionally comprising one or more catenary or non-catenary oxygen atoms; L represents a bond or a divalent group; R
F
is a divalent fluorinated C
1-3
bridging group; Y is a hydrophilic function selected among anionic functionalities, cationic functionalities and non-ionic functionalities.
Methods of blocking an ethylene response in plants using cyclopropene derivatives
申请人:——
公开号:US20010019995A1
公开(公告)日:2001-09-06
Methods of applying cyclopropene derivatives and compositions thereof to block ethylene receptors in plants are disclosed. One such method comprises applying to the plant an effective ethylene response-inhibiting amount of cyclopropene derivatives or compositions thereof. Also disclosed are methods of inhibiting abscission in plants, methods of prolonging the life of cut flowers, methods of inhibiting ripening of picked fruits, and methods of inhibiting ripening of picked vegetables.
PROCESS FOR PREPARING DIARYL CARBONATES FROM DIALKYL CARBONATES
申请人:Düx Andre
公开号:US20100010252A1
公开(公告)日:2010-01-14
The invention provides a process for preparing diaryl carbonates from dialkyl carbonates and aromatic hydroxyl compounds using at least two reaction columns, a process section for recovering the dialkyl carbonate used in the reaction and for removing the alcohol of reaction, one or more process steps for removing the by-products obtained in the process which have a boiling point between that of the dialkyl carbonate and that of the alkyl aryl carbonate formed during the preparation of the diaryl carbonate, and a process step for further purification of the diaryl carbonate obtained from the reaction columns.
PROCESS FOR PREPARING DIARYL CARBONATES OR ALKYL ARYL CARBONATES FROM DIALKYL CARBONATES
申请人:DÜX Andre
公开号:US20100261928A1
公开(公告)日:2010-10-14
The invention relates to a process for preparing diaryl carbonates and/or alkyl aryl carbonates from dialkyl carbonates and aromatic hydroxy compounds using a reactive dividing wall column.