Abstract:
The present invention generally relates to processes for coating substrates, preferably metals, with solutions having fluoro-copolymers that comprise trans-1,3,3,3-tetrafluoropropene monomers and vinylidene difluoride monomers and at least 50 weight percent of the fluoro-copolymer comprises trans-1,3,3,3-tetrafluoropropene monomers. The fluoro-copolymer has a surface energy below about 40 mJ/m2. The surfaces of the substrates may be subjected to a phosphate treatment prior to application of the fluoro-copolymer coating, and/or the fluoro-copolymer coating may be applied directly onto the surface of the substrate.
Abstract:
The present invention describes a process for making CF3CH═CHF (HFO-1234ze). The process involves the addition of carbon tetrachloride (CCl4) to 1,2-dichloroethylene to form CCl3CHClCHCl2. The compound CCl3CHClCHCl2 thus can then either be treated with HF to produce CF3CHClCHClF as the main product, or it can be converted to CCl2═CHCHCl2 (1230za) by dechlorination. CCl2═CHCHCl2 can be treated with HF such that the main product obtained is CF3CHClCHClF. CF3CH═CHCl may be produced as a by-product, but upon treatment with HF, it affords the compound CF3CHClCHClF. The desired compound, CF3CH═CHF (HFO-1234ze), is obtained as a trans/cis mixture by dehydrochlorination of CF3CH2CHClF or by dechlorination of CF3CHClCHClF.
Abstract:
The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides several routes for forming HCFO-1233zd from 3,3,3-trifluoropropene (FC-1234zf).
Abstract:
Disclosed is a process for the preparation of cis-1-chloro-3,3,3-trifluoropropene (cis-1233zd) comprising the steps of (a) providing CF3CHClCHCl2 (233da), and (b) treating the 233da with a dechlorinating agent to produce a mixture of compounds including cis-1-chloro-3,3,3-trifluoropropene, preferably wherein the amount of the cis-isomer generated in the reaction is not less than 30%.
Abstract:
The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides routes for HCFO-1233zd from inexpensive and commercially available trifluoromethane (HFC-23).
Abstract:
The present invention provides a simple three step process for the production of 1,3,3,3-tetrafluoropropene (HFO-1234ze). In the first step, carbon tetrachloride is added to vinyl fluoride to afford the compound CCl3CH2CHClF (HCFC-241fb). HCFC-241fb is then fluorinated with anhydrous HF to afford CF3CH2CHClF (HCFC-244fa) in the second step. Dehydrochlorination of HCFC-244fa, in the third step, affords the desired product, CF3CH═CHF (HFO-1234ze). Following similar chemistry, vinyl chloride may be used in place of vinyl fluoride.
Abstract:
Disclosed is a process for the preparation of cis-1-chloro-3,3,3-trifluoropropene (cis-1233zd) comprising the steps of (a) providing CF3CHClCHCl2 (233da), and (b) treating the 233da with a dechlorinating agent to produce a mixture of compounds including cis-1-chloro-3,3,3-trifluoropropene, preferably wherein the amount of the cis-isomer generated in the reaction is not less than 30%.
Abstract:
Fumigation compositions and methods which utilize or comprise cis-1-chloro-3,3,3-trifluoropropene in amounts and under conditions effective to produce a substantial fumigation affect and preferably are essentially free of methyl iodide and/or are essentially free of any compound having a LD50 toxicty of less than about 50 mg/kg (oral, rat).
Abstract:
The present invention provides a simple three step process for the production of 1,3,3,3-tetrafluoropropene (HFO-1234ze). In the first step, carbon tetrachloride is added to vinyl fluoride to afford the compound CCl3CH2CHClF (HCFC-241fb). HCFC-241fb is then fluorinated with anhydrous HF to afford CF3CH2CHClF (HCFC-244fa) in the second step. Dehydrochlorination of HCFC-244fa, in the third step, affords the desired product, CF3CH═CHF (HFO-1234ze). Following similar chemistry, vinyl chloride may be used in place of vinyl fluoride.
Abstract:
The present invention describes a process for making CF3CH═CHF (HFO-1234ze). The process involves the addition of carbon tetrachloride (CCl4) to 1,2-dichloroethylene to form CCl3CHClCHCl2. The compound CCl3CHClCHCl2 thus can then either be treated with HF to produce CF3CHClCHClF as the main product, or it can be converted to CCl2═CHCHCl2 (1230za) by dechlorination. CCl2═CHCHCl2 can be treated with HF such that the main product obtained is CF3CHClCHClF. CF3CH═CHCl may be produced as a by-product, but upon treatment with HF, it affords the compound CF3CHClCHClF. The desired compound, CF3CH═CHF (HFO-1234ze), is obtained as a trans/cis mixture by dehydrochlorination of CF3CH2CHClF or by dechlorination of CF3CHClCHClF.