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| | 1,4-Butanediol dimethacrylate Basic information |
| | 1,4-Butanediol dimethacrylate Chemical Properties |
| Melting point | −117 °C(lit.) | | Boiling point | 132-134 °C/4 mmHg (lit.) | | density | 1.023 g/mL at 25 °C (lit.) | | vapor density | 2.09 (vs air) | | vapor pressure | 430 mm Hg ( 25 °C) | | refractive index | n20/D 1.456(lit.) | | Fp | 38 °F | | storage temp. | 2-8°C | | solubility | Chloroform (Sparingly), Methanol (Slightly) | | pka | 9.8(at 25℃) | | form | Liquid | | color | Clear colorless to slightly yellow | | Water Solubility | 243mg/L at 20℃ | | Merck | 14,9710 | | BRN | 956566 | | Cosmetics Ingredients Functions | FILM FORMING | | LogP | 3.1 at 20℃ | | CAS DataBase Reference | 2082-81-7(CAS DataBase Reference) | | NIST Chemistry Reference | 1,4-Butylene glycol dimethacrylate(2082-81-7) | | EPA Substance Registry System | 1,4-Butanediol dimethacrylate (2082-81-7) |
| | 1,4-Butanediol dimethacrylate Usage And Synthesis |
| Description | Sensitization to 1,4-butanediol dimethacrylate (BUDMA)
was reported in dental technieians, with cross
reactivity to methylmethacrylate. | | Chemical Properties | 1,4-Butanediol dimethacrylate has a clear liquid appearance and is used as a cross-linking methacrylic monomer of polymers. They are present in dental composite materials, sealants, and inks. 1,4-Butanediol dimethacrylate is a non flammable liquid, with a low volatility and a moderatesolubility in water. | | Uses | cross-linking methacrylic monomer for use in dental-composite materials, sealants, prostheses, etc. | | Application |
1,4-Butanediol dimethacrylate is an important crosslinking agent, which can be used as a crosslinking agent for rubber and plastics, a modifier for rubber and synthetic resins, an adhesive for acrylic sheets, and a plasticizer for glass fibers. It is widely used in injection moldings, rubber, optical plastics, adhesives, dental materials, wire and cable coatings, etc. At present, the preparation of 1,4-butanediol dimethacrylate is usually carried out by a reactive distillation ester exchange process in the presence of a catalyst and an inhibitor. The purpose of adding a catalyst and an inhibitor is to accelerate the reaction process and prevent polymerization during the reaction and distillation under the action of light and heat.
| | Synthesis | Methyl methacrylate and 1,4-butanediol are taken as raw materials. The following steps conclude: reacting the methyl methacrylate with the 1,4-butanediol to prepare the product of 1,4-butanediol dimethacrylate with the purity of over 99.0 percent by adopting a reaction distillation ester exchange process in the presence of a catalyst and a polymerization inhibitor, wherein the catalyst is an organic tin catalyst. The polymerization inhibitor is a composite polymerization inhibitor. |
| | 1,4-Butanediol dimethacrylate Preparation Products And Raw materials |
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