∷
∷
| CAS:18925-66-1，Bis(hexafluoroisopropyl) carbonate，（BHFC） |
Synonym: Bis(1,1,1,3,3,3-hexafluoropropan-2-yl) carbonate
CAS Number: 18925-66-1
MDL Number: MFCD28334297
Molecular Formula: C7H2F12O3
Molecular Weight: 362.07
BP：95-97℃
| Safety Information |
|
|
| MSDS Information |
[Journal of Organic Chemistry, 2021, vol. 86, # 14, p. 9811 - 9819]
Method for producing polycarbonate polyol
Current Patent Assignee: AGC INC; KOBE UNIVERSITY - JP2023/61092, 2023, A
Patent Family Members: JP2023/61092 A
Abstract
To provide a method for producing a polycarbonate polyol that efficiently yields a polycarbonate polyol useful as a raw material for production of resins such as polyurethane and elastomers without using highly toxic phosgene and under relatively moderate conditions.SOLUTION: A method for producing a polycarbonate polyol causes a polyhydroxy compound to react with a predetermined fluorinated carbonate, with a ratio of the fluorinated carbonate of 0.3 mol or more and less than 1 mol to the polyhydroxy compound of 1 mol, in the presence of a catalyst.SELECTED DRAWING: None
Photo-on-Demand Base-Catalyzed Phosgenation Reactions with Chloroform: Synthesis of Arylcarbonate and Halocarbonate Esters
Abstract
Carbonate esters are utilized as solvents and reagents for C1 building blocks in organic synthesis. This study reports a novel photo-on-demand in situ synthesis of carbonate esters with CHCl3 solutions containing a mixture of an aromatic or haloalkyl alcohol having relatively high acidity, and an organic base. We found that the acid-base interaction of the alcohol and base in the CHCl3 solution plays a key role in enabling the photochemical reaction. This reaction allows practical syntheses of diphenyl carbonate derivatives, haloalkyl carbonates, and polycarbonates, which are important chemicals and materials in industry.
POLYCARBONATE MANUFACTURING METHOD AND POLYCARBONATE
Current Patent Assignee: AGC INC - EP2987817, 2020, B1
Patent Family Members: CN105121505 A; CN105121505 B; EP2987817 A1; EP2987817 A4; EP2987817 B1; ...
Abstract
The present invention relates to a method of producing polycarbonate containing following step (a) and step (b), (a) a step of reacting a specific fluorine-containing carbonate (Compound (1), etc.) and an aromatic dihydroxy compound in the presence of a condensation catalyst, to obtain a prepolymer, and (b) a step of heating the prepolymer at a temperature which is lower than a melting temperature of the prepolymer and performing solid phase polymerization on the prepolymer while a fluorine-containing alcohol that is produced as a by-product is discharged out of a system, to obtain a polycarbonate.
Contact: Mr Hsu
Phone: +86(0)1815701-8567
Tel: +86(0)570780-5618
Email: sales@fluorio.com
Add: No.5,Longfei Road,Longyou Eco-Tech Development Zone, Quzhou, Zhejiang, China
