36 results about "Bisphenol A dimethacrylate" patented technology

A composition includes a light-curable viscous mixture that includes: 0-50% by weight of a poly(methyl methacrylate) / methyl methacrylate solution; 5-20% by weight of at least one kind of multifunctional aliphatic (meth)acrylate; 5-40% by weight of at least one kind of aliphatic urethane (meth)acrylate oligomer; 25-65% by weight of at least one kind of difunctional bisphenol-A dimethacrylate; 0.1 to 5% by weight of at least one kind of a photoinitiator; 0.05 to 2% by weight of at least one kind of light stabilizer; and 0.1 to 3% by weight of color pigment based on the total weight of the composition.

The present invention provides a three-dimensional printing article for making dental products and the preparation method thereof, which comprises: Ethoxylated bisphenol A dimethacrylate, Diurethane dimethacrylate, Triethylene glycol dimethacrylate, and Diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide. It not only improves the present time-consuming and labor-intensive dental device making, but also can be used in mass production of dental devices.

The invention discloses a photocurable photochromic material and a preparation method thereof. The components contained in the photocurable photochromic material and the weight percentage of each component are as follows: bisphenol A dimethacrylate: 30% to 70%; Polyethylene glycol diacrylate: 10% to 60%; multifunctional acrylate monomer: 10% to 30%; the rest are modifying additives, totaling 100%. The invention can not only shorten the production time of the lens from the original 20 hours to 15 minutes, but also improve its impact resistance, avoid the phenomenon that it is prone to cracking during use, and at the same time improve its weather resistance and avoid severe cold and heat. Cracks are prone to appear during the change process.

A novel monomer, 1,1,1-tri-[4-(methacryloxyethylaminocarbonyloxy)-phenyl]ethane (MPE) can be used in preparing dental compositions The MPE monomer can be combined into a dental adhesive with hydroxyethyl methacrylate (HEMA) and BisGMA (bisphenol A dimethacrylate). The MPE polymer can be polymerized with a photoinitiator system, such as a system that includes an iodonium salt. The iodonium salt can be diphenyliodonium hexafluorophosphate.

The present disclosure provides a method of making an article particularly a dental article having a desired color, the method comprising the steps of: (a) providing a color array, said array comprising a plurality of distinct color points, each color point being independently composed of a resin mixture comprising one or more master batch resins; (b) comparing the desired color with the color points on the color array and selecting a color point that substantially corresponds to the desired color of the article; (c) identifying the resin mixture corresponding to said selected color point; and (d) making the article using said identified resin mixture. The embodiments include the preparation of master batch resins comprising mainly bisphenol A dimethacrylate, polyethylene glycol) di acrylate, tetrahydrofurfuryl methacrylate, phenylbis(2,4,6 trimethyl benzoyl)phosphine oxide and 2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene, as well as the preparation of 36-color array by mixing the master batch resins at different ratios.

Disclosed is drying-out-free type die bonding glue. The glue comprises, by weight, 100 parts of bisphenol A epoxy diacrylate, 10-50 parts of ethoxylated bisphenol A dimethacrylate, 5-15 parts of reactive diluents, 1-15 parts of tougheners, 1-5 parts of initiators, 0.1-2 parts of organic acid, 1-5 parts of saccharin, 0.1-2 parts of accelerants and 0.01-1 part of stabilizing agent. The invention also provides a preparation method of the drying-out-free type die bonding glue. The glue has the advantages that the glue can be stored stably at the room temperature, the storage period is long (the storage period is more than 12 months at the room temperature), the bonding performance for printed circuit board (PCB) base plates and chips is good, chips can be solidified quickly without drying after being attached at the room temperature (chips can be solidified primarily within five minutes and wiring requirements are met), the glue has stable and proper viscosity, the trailing phenomenon cannot exist during usage, and process requirements of high-speed dispensing are met.

The invention provides a visible-light-cured adhesive including the following components: by weight, 20-50% of methacrylate monomer, 10-30% of a methacrylate diluent, less than 5% of a visible light initiator, 30-68% of silica, glass powder or alumina powder and 0.1-5% of nano fumed silica, the methacrylate monomer is at least one substance from bisphenol A-glycidyl dimethacrylate, ethoxylated bisphenol A dimethacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate, and the invention also provides a preparation method of the visible-light-cured adhesive. The visible-light-cured adhesive is low in mobility, short in curing time, highin bonding strength, and suitable for industrial application.

The invention discloses a preparation method and application of a PTFE and polyester-based composite film for preventing wind turbine blades from icing. The method includes the steps that a bonding composite agent is adopted for lamination complexing, an interface adhesive is applied, and a pressure-sensitive adhesive is adopted for photo-initiated pressure-sensitive adhesive application. The bonding complexing agent is prepared from 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate, vinyl acetate, ethyl carbamate, alpha-linolenic acid, benzoyl peroxide and (4)ethoxylated bisphenol A dimethacrylate; the photo-initiated pressure-sensitive adhesive is prepared from a poly[butyl acrylate-glycidyl methacrylate-n-butoxy methacrylamide]copolymer, butyl acrylate, (4)ethoxylated bisphenol A dimethacrylate, 4,4'-bis(diethylamino)benzophenone and dimethylformamide. The method and the composite film solve the non-adhesion technical problem that a PTFE film can not be pasted on the surfaces of wind turbine blades with an adhesive directly, the bonding peel strength is improved, and the composite film is suitable for wind turbine blades of various models.