24936-68-3

Basic information

• Product Name: POLY(BISPHENOL A CARBONATE)
• Synonyms: 2,2-bis(4-Hydroxyphenyl)propanepolycarbonate;BisphenolA-phosgenepolymer;lexan;Poly(isopropylidenediphenylenecarbonate);poly(oxycarbonyloxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene);Poly[oxycarbonyloxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene];Poly-4,4’-isopropylidenediphenylcarbonate);polycarbonatepc
• CAS NO: 24936-68-3
• Molecular Formula: [-C6H4C(CH3)2C6H4OCO2-]n
• Molecular Weight: 0
• EINECS: 607-454-4
• Mol File: 24936-68-3.mol
• Article Data: 8

Chemical Properties

• Melting Point: 243 °C
• Boiling Point: 333.6oC at 760 mmHg
• Flash Point: 449 °C
• Appearance: Clear/Pellets
• Density: 1.2 g/mL at 25 °C(lit.)
• Vapor Pressure: 2.58E-05mmHg at 25°C
• Refractive Index: n20/D 1.586
• Solubility: chlorinated solvents: soluble
• CAS DataBase Reference: POLY(BISPHENOL A CARBONATE)(CAS DataBase Reference)
• NIST Chemistry Reference: POLY(BISPHENOL A CARBONATE)(24936-68-3)
• EPA Substance Registry System: POLY(BISPHENOL A CARBONATE)(24936-68-3)

Safety Data

• Safety Statements: 24/25
• WGK Germany: 3
• Hazardous Substances Data: 24936-68-3(Hazardous Substances Data)

Usage

Chemical Properties

clear pellets

InChI:InChI=1/CH2O3/c2-1(3)4/h(H2,2,3,4)/p-2

Upstream product

• 80-05-7 BPA 
• 616-38-6 carbonic acid dimethyl ester 
• 2937-50-0 Allyl chloroformate 
• 106-75-2 diethylene glycol bischloroformate 
• 32091-42-2 2,2-di(4-hydroxyphenyl)propane 
• 24424-99-5 di-tert-butyl dicarbonate 
• 495-18-1 Benzohydroxamic acid 
• 105-58-8 Diethyl carbonate 
• 110726-28-8 4,4'-(1-(4 (2-(4-hydroxyphenyl)propane-2-yl)phenyl)ethane-1,1-diyl)bis(phenol) 

Relevant articles and documents

Chemical Upcycling of Waste Poly(bisphenol A carbonate) to 1,4,2-Dioxazol-5-ones and One-Pot C?H Amidation

Chemical upcycling of poly(bisphenol A carbonate) (PC) was achieved in this study with hydroxamic acid nucleophiles, giving rise to synthetically valuable 1,4,2-dioxazol-5-ones and bisphenol A. Using 1,5,7-triazabicyclo[4.4.0]-dec-5-ene (TBD), non-green carbodiimidazole or phosgene carbonylation agents used in conventional dioxazolone synthesis were successfully replaced with PC, and environmentally harmful bisphenol A was simultaneously recovered. Assorted hydroxamic acids exhibited good-to-excellent efficiencies and green chemical features, promising broad synthetic application scope. In addition, a green aryl amide synthesis process was developed, involving one-pot depolymerization from polycarbonate to dioxazolone followed by rhodium-catalyzed C?H amidation, including gram-scale examples with used compact discs.

METHOD FOR PRODUCING POLYCARBONATE OLIGOMERS

A process for producing an oligomer comprising contacting a dialkyl carbonate and a dihydroxy compound in a reaction zone in the presence of an oligomerization catalyst under oligomerization conditions to form the oligomer wherein the molar ratio of dihydroxy compound to dialkyl carbonate in the reaction zone is at least 2:1.

Studies on the carboxymethylation and methylation of bisphenol A with dimethyl carbonate over TiO2/SBA-15

Carboxymethylated species were selectively synthesized from dimethyl carbonate (DMC) and bisphenol A (BPA) over TiO2/SBA-15. On the basis of catalyst characterization by means of XRD, FT-IR, HPLC and GC-MS, the relations between catalytic performance and catalyst properties were discussed. Si-O-Ti was active sites for reaction, and the interaction mode between Ti-O-Si and DMC was main factor to determine carboxymethylation and methylation. When DMC was attacked by Ti-O-Si on two oxygen atoms of CH3-O moiety, BPA attacked carbonyl carbon to form carboxymethylated products. If the interaction occurs through the oxygen of C{double bond, long}O moiety, BPA attacked methyl carbon to form methylated products. Chemisorbed H2O over TiO2/SBA-15 made DMC to act as methylating agent. After chemisorbed H2O was removed, carboxymethylated species of two-methylcarbonate-ended-BPA (DmC(1)) and one-methylcarbonate-ended-BPA (MmC(1)) were selectively synthesized.