44 results about "Dimethyl-p-toluidine" patented technology

A photopolymerization initiator comprising (A) an alpha -diketone compound such as camphorquinone, (B1) an aliphatic amine compound such as triethanolamine or N-methyldiethanolamine, (B2) an aromatic amine compound such as ethyl p-dimethylaminobenzoate or N,N-dimethyl p-toluidine, and (C) a triazine compound substituted with a trihalomethyl group, such as 2,4,6-tris(trichloromethyl)-s-triazine or 2-phenyl-4,6-bis(trichloromethyl)-s-triazine. The photopolymerization initiator remains stable against the environmental light such as the indoor illumination light from a fluorescent lamp or the dental light illuminating the interior of the oral cavity, is excellently handled, is quickly cured by the irradiation with an intense light emitted from a light irradiator for polymerization, provides a cured body having excellent properties, can be stably preserved even at high temperatures, and is very useful as a dental composite resin.

The invention discloses self-developing polymethacrylate used for bone cement and a preparation method for the self-developing bone cement. The powder body of the bone cement consists of self-developing polymethyl iodine alcohol acrylate and benzoperoxide, wherein the self-developing polymethyl iodine alcohol acrylate is polymerized by methacrylic acid and non-ionic contrast agent, namely an iodine alcohol compound after esterification; a liquid consists of a methyl acrylate monomer, N,N-dimethyl-p-toluidine and hydroquinone; the polymethacrylate is endowed with the developing property by utilizing iodine, and meanwhile, the defect that the nonionic contrast agent cannot develop for a long time in vivo is improved. The bone cement can be used for plastic surgery, osteoporosis fracture fixation and bone defect filling, and can also be used as a denture base material.

The invention discloses an injectable water-absorbing and swelling bone cement, which comprises the following raw materials in percentage by weight: 0.002%-0.09% of methyl methacrylate monomers, 0.001%-0.0018% of N,N-Dimethyl-p-toluidine, 0.0015%-0.0045% of hydroquinone, 0.705%-66.6023% of methyl methacrylate-styrene copolymer, 0.12%-14.4014% of polymethyl methacrylate, 0.05%-9% of barium sulfate, 9.9%-90.1205% of water-absorbing resin fibers. The invention further provides a preparation method of the bone cement, and the preparation method specifically comprises the following step: mixing the prepared water-absorbing resin fibers with the injectable bone cement precursor to obtain injectable water-absorbing and swelling bone cement. The water-absorbing resin fibers in the injectable water-absorbing and swelling bone cement are increased in volume after absorbing water, the elastic modulus of the bone cement can be reduced, the volume contraction of PMMA bone cement in self polymerization can be offset, and the bone and prosthesis are firmly bonded.

The invention relates to a biodegradable active medical tissue adhesive and its preparation. The adhesive includes adhesives for bonding soft tissue, dental hard tissue, and orthopedic hard tissue, and its liquid phase is hydroxyethyl methacrylate ring-opening polymerized cyclic ester macromonomer, alcohol Biodegradable cross-linking agent with functional group as the central block, vinylpyrrolidone, N,N-dimethyl-p-toluidine, hydroquinone, etc.; solid phase is encapsulated natural bone powder, porogen, benzoyl peroxide, etc. . The preparation method includes mixing the liquid phase and the solid phase, and the obtained adhesive is easy to use and operate, has good biocompatibility of the material, and has adjustable mechanical strength and degradation rate.