BISPHENOL A DIGLYCIDYL ETHER RESIN
| Price | USD1.00 |
| Packge | 1KG |
- Min. Order:1G
- Supply Ability:100KG
- Time:2019-07-06
Product Details
- Product NameBISPHENOL A DIGLYCIDYL ETHER RESIN
- CAS No.25068-38-6
- EINECS No.500-033-5
- MFC15H16O2
- MW228.28634
- AppearancepelletsGardner: ≤3
- density 1.18
- Melting point 64-74 °C
- Boiling point 114-118 °C
- storage temp. room temp
- Water Solubility 7mg/L at 25℃
AD68
| BISPHENOL A DIGLYCIDYL ETHER RESIN Basic information |
| Product Name: | BISPHENOL A DIGLYCIDYL ETHER RESIN |
| Synonyms: | (Chloromethyl)oxirane,4,4’-(1-methylethylidene)bisphenolcopolymer;2,2’-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)]bis[oxirane],homopoly;4,1-phenyleneoxymethylene)]bis[oxirane];4,4’-(1-methylethylidene)bisphenol,-,polymerwith2,2’-[(1-methylethylidene);4,4’-(1-methylethylidene)bis-phenopolymerwith(chloromethyl)oxirane;4,4’-(1-methylthylidene)bisphenol,polymerwith2,2’-[(1-methylethylidene)bis(;4’-(1-methylethylidene)bisphenol,-polymerwith(chloromethyl)oxirane;aralditegy250 |
| CAS: | 25068-38-6 |
| MF: | C18H21ClO3 |
| MW: | 0 |
| EINECS: | 500-033-5 |
| Product Categories: | Polymers;A;Stains and Dyes;Stains&Dyes, A to;Dyestuff Intermediates |
| Mol File: | Mol File |
| BISPHENOL A DIGLYCIDYL ETHER RESIN Chemical Properties |
| density | 1.18 |
| Fp | 78 °C |
| color | Gardner: ≤3 |
| Safety Information |
| Hazard Codes | Xi,N,Xn,T |
| Risk Statements | 36/38-43-51/53-42/43-63-62-36/37-20/21/22-45-23/24/25 |
| Safety Statements | 28-37/39-61-36-26-23-45-36/37-53 |
| RIDADR | UN 3082 9/PG 3 |
| WGK Germany | 2 |
| RTECS | KC2100000 |
| BISPHENOL A DIGLYCIDYL ETHER RESIN Usage And Synthesis |
| Introduction | Bisphenol A diglycidyl ether (DGEBA) is a pale yellow liquid epoxy compound formed by the polycondensation of epichlorohydrin (ECH) and bisphenol A (BPA). Bisphenol A diglycidyl ether (DGEBA) can be called a small-molecule adhesive. Epoxy groups located at both ends of the molecule can undergo reactions of ring-opening, cross-linking and solidity with amines, anhydrides, and other curing agents of epoxy resins. Therefore, they are effective adhesion for most substrates such as glass, ceramics, silicon wafers, and polymer materials. It is the lowest molecular weight epoxy resins, and also used as the packaging material for coatings, adhesives, insulating paints, semiconductors, and integrated circuits and other electronic components. In recent years, DGEBA has been used for the inner coating of packaging materials such as canned food. |
| Preparation | Add bisphenol A and epichlorohydrin in the amount of 1:4 into a three-necked flask equipped with a reflux device, place it in a constant-temperature oil bath, melt it with 70 °C of heat, and dropwise 28.57% aqueous sodium hydroxide solution with a dropping funnel, in which the ratio of the amount of sodium hydroxide and bisphenol A is 4:1. When dropping is completed within half an hour, heat it for 12-24 hours under temperature 70-80°C。 Stop the heating after bisphenol A is completely disappeared validated by TLC method. Cool the mixture to room temperature; add extractant toluene/water (volume ratio 2:1) and stir it at room temperature for half an hour. Transfer to a pear-shaped separatory funnel to separate the liquid, continue washing and separating with deionized water until the solution turns to neutral from alkaline. Distillation and vacuum distillation are used to remove toluene and unreacted epichlorohydrin, respectively. Use a solvent mixture of petroleum ether and ethyl acetate (volume ratio 3:1) a developing solvent to purify it by column chromatography according to the above procedure to obtain DGEBA.  This process, also known as a one-step process, is commonly used for the preparation of low and medium molecular weight bisphenol A epoxy resins. When the low-molecular-weight bisphenol A epoxy resin is continuously reacted with bisphenol A, the obtained bisphenol A epoxy resin has a high polymerization with a relative molecular mass 1400 or more. This is called a two-step method. When the number-average molecular weight is less than 400, the main component is bisphenol A diglycidyl ether (DGEBA, relative molecular weight 340). To fix the amount of fixed bisphenol A and make excess epichlorohydrin can obtain DGEBA. The reaction process is as follows:  As can be seen from above, the product is bisphenol A diglycidyl ether when there is sufficient epichlorohydrin and enough sodium hydroxide as the catalyst. Excessive amounts of bisphenol A generate linear high molecular compounds with hydroxyl-, ether- and epoxy-terminated groups. The internal rotation function of the ether bond increases the flexibility of the molecule, and the hydroxyl group enhances the chemical reactivity and the bonding ability, the epoxy group cross-links molecules into a three-dimensional network structure by reacting with a curing agent. The performance represented by each part of the Bisphenol A-type epoxy resin is shown here:  |
Company Profile Introduction
Henan CoreyChem Co., Ltd, based on the original Zhengzhou Cote Chemical Research Institute, be brave in absorbing highly educated talents & overseas returnees; actively responded to Zhengzhou City High-tech Zone Government’s Special Care Policy, reorganized and founded in National University of Science and Technology Park, which is a high-tech, stock enterprise of high-end chemical Custom synthesis;The park was created by the People's Government of Henan Province, and proved by Ministry of Education and the National Science & Technology, taking the construction mode of "many college a park, and common development", mainly depends on Zhengzhou University and Henan University’s scientific research and talent advantage to set up Universities, scientific research institute and enterprise scientific research achievements transformation platform, to make high-tech enterprises incubate, is the new high-tech talent gathering base, high and new technology industry enterprise radiation base, colleges and universities technological innovation base.
Henan Coreychem Co., Ltd, facing global High-tech pharmaceutical raw materials, high complex new type intermediates, fine chemicals custom synthesis, scale-up production and Rare chemicals trade. Corey have well-equipped machine, strong technical force and considerate marketing team service. We also have rich experience advantage in basic research, small scale process development, scale-up, industrial technology development & production and cost control.
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