137results about How to "Fast cross-linking" patented technology

An apparatus and a method are provided for treating a targeted area of ocular tissue in a tissue-sparing manner comprising use of two or more therapeutic modalities, including thermal radiation source (such as an CW infrared fiber laser), operative in a wavelength range that has a high absorption in water, and photochemical collagen cross-linking (CXL), together with one or more specific system improvements, such as peri-operative feedback measurements for tailoring of the therapeutic modalities, an ocular tissue surface thermal control/cooling mechanism and a source of deuterated water/riboflavin solution in a delivery system targeting ocular tissue in the presence of the ultraviolet radiation. Additional methods of rapid cross-linking (RXL), are provided that further enables cross-linking (CXL) therapy to be combined with thermal therapy.

The present invention relates to a crosslinkable composition comprising at least one crosslinkable component crosslinkable by a latent base crosslinking catalyst comprising a substituted carbonate salt according to formula 1 wherein X⁺ represents a cation and wherein R is hydrogen, alkyl, aryl or aralkyl group, and wherein the crosslinkable composition comprises 0.1-10 wt %, preferably 0.1-5, more preferably 0.2-3 and most preferably 0.5-1.5 wt % water (relative to total weight of the crosslinkable composition). The invention further relates to a coating composition comprising the crosslinkable composition according to the invention, a novel catalyst composition and to the use of said catalyst composition according to the invention as a latent base crosslinking catalyst in coating compositions, preferably in RMA crosslinkable compositions.

The invention relates to a solar cell packaging EVA adhesive film capable of resisting heat, humidity, ultraviolet light and aging, which comprises the following materials by weight portions: 100 portions of copolymer of ethylene vinyl acetate, 0.8-1.4 portions of crosslink curing agent, 0.05-0.15 portion of crosslink curing accelerator, 0.2-0.6 portion of tackifier, 0.1-0.5 portion of antioxidant, 0.05-0.25 portion of ultraviolet light stabilizer and 0.1-0.3 portion of ultraviolet light absorbent, wherein the crosslink curing agent is tert butyl peroxy 2-ethyl hexyl carbonate; the crosslink curing accelerator is triallyl isocyanurate; the tackifier is r-glycidyl ether oxy-propylltrimethoxysilane; the antioxidant is one or two selected from the group consisting of bis(2,4-dicumylphenyl)pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, tris(nonyl phenyl)phosphate and tris(2,4-butylphenyl)phosphate; and ultraviolet light absorbent is gas phase silicon dioxide. The solar cell packaging EVA adhesive film can resist high temperature of 85 DEG C, humidity of 85 percent, ultraviolet light and thermal oxidative aging.

The present invention relates to technological process of making cable insulating polyethylene material with cross-linking completed at natural condition, fast reaction speed, simple production process and easy operation. The making process includes the following steps: 1. melting, mixing and pelletizing two groups of material in a double screw extruder separately to obtain material A comprising polyethylene 100 weight portions, initiator 0.05-0.2 weight portions, silane coupler 0.5-5.0 weight portions and pre-cross linking resisting agent 0.1-0.5 weight portions; and material B comprising polyethylene 100 weight portions, catalyst 0.5-5 weight portions, antioxidant 1-10 weight portions, machining assistant 1-10 weight portions and pre-cross linking resisting agent 0.5-5 weight portions; and 2. mixing the material A and the material B in the weight ratio of 18-20 to 1, and melting and extruding in a double screw extruder to form the cable insulating layer.

The invention discloses a preparation method of crosslinkable polyethylene cable material, which includes the steps and the following components are represented in proportion by weight: throwing polyethylene 75-95 proportion by weight, ethylene-vinyl acetate copolymer 0-20 proportion by weight, unsaturated silicone hydride 1.0-5 proportion by weight, free radical evocating agent 0.1-0.5 proportion by weight, organotin catalyst 0.1-1 proportion by weight, organic acid compound 0.1-1 proportion by weight, anti-oxidant 0.1-0.5 proportion by weight, anti-copper agent 0.1-0.5 proportion by weight, and lubricant 0.5-2 proportion by weight into the high speed mixing machine with rotary speed at 80-120 rpm for mixing 15-25 minutes, and then adding the mixture into the double-screw extruder, melting and prilling for obtaining crosslinkable polyethylene cable material. The method provided by the invention mixes all the material and dispersing uniformly, and then executes grafting reaction, thereby realizing more uniform grafting reaction and guaranteeing homogeneity of the crosslinking process, in addition, the invention uses organic acid compound which remarkably improves catalysis function of organotin catalyst, and improves crosslinking speed of silicone hydride, and overcomes the defect that the conventional silicone hydride crosslinked plastic can be linked only in warm water or steam environment with long time cooking, thereby saving production cost for manufacturer considerably. The crosslinkable polyethylene cable material obtained according to the invention is extruded by plastic cable extrusion machine unit for obtaining cable insulation layer, and is placed under the condition of 23 DEG C. with 50% humidity for one day naturally, then the crosslinking process is finished, moreover the product can pass performance indexes of hot extension performance test, dynamics test and aging characteristic test according to the national standard request.

A curable organosilicon composition includes a radical curable organosilicon compound, an organoborane amine complex, a condensation curable organosilicon compound, a condensation cure catalyst, and a condensation-reactive cross-linking compound. The curable organosilicon composition may further include an amine-reactive compound. A method of forming the curable organosilicon composition introduces the organoborane-amine complex and the amine-reactive compound into separate reaction vessels. The curable organosilicon composition is used to form various articles.

The invention relates to a bi-crosslinking mussel binding protein bionic hydrogel for a tissue adhesive and a preparation method of the bi-crosslinking mussel binding protein bionic hydrogel. The hydrogel is obtained by taking mercapto group modified chitosan containing dopa residues as a matrix and performing bi-crosslinking under the condition of four-arm polyethyleneglycol succinimidyl carbonate and sodium periodate. The preparation method comprises the following steps of preparation of dopa residue modified chitosan, preparation of dopa residue and mercapto group modified chitosan, preparation of four-arm polyethyleneglycol succinimidyl carbonate and preparation of the bi-crosslinking mussel binding protein bionic hydrogel. In the preparation method provided by the invention, by takingthe sodium periodate as a crosslinking agent which performs rapid crosslinking and the four-arm polyethyleneglycol succinimidyl carbonate as a crosslinking agent which is relatively slow in reaction,the hydrogel is prepared by bi-crosslinking, the crosslinking speed is rapid, and the prepared hydrogel has very good adhesion performance, biocompatibility and mechanical strength and is hydrogel which can be used for the tissue adhesive.

Materials crosslinkable at room temperature by condensation are based on organosilicon compounds which cure to give permanently resilient materials, and which employ one or more compounds of the metals Li, Na, K, Mg, Ca, or Sr as catalyst.

The invention relates to a fracturing fluid cross-linking agent and a preparation method and application thereof. The cross-linking agent prepared by the invention can rapidly react with dialkyl phosphate, so that gelled fracturing fluid is formed by lower alkanes. The preparation method of the cross-linking agent comprises the following steps: (1) preparing a complex solvent, namely mixing an alcohol and water according to the mass ratio of 1:2-1:4, stirring uniformly, thereby obtaining the complex solvent; (2) sequentially adding the following components in parts by mass into a reaction container: 40-70 parts of the complex solvent, 30-60 parts of a trivalent iron salt and 6-25 parts of a complexing agent, and stirring and reacting at the temperature of 50-70 DEG C for 3-4 hours; and (3) cooling the reaction solution to the temperature of 30 DEG C, adding 2-8 parts of a cross-linking accelerator, uniformly stirring, thereby obtaining the lower alkane anhydrous fracturing fluid cross-linking agent.

The invention relates to a silicone adhesive composition. The silicone adhesive composition comprises, by mass, 100 parts of a low-viscosity silicone adhesive, 0.1 to 1 part of polydimethylsiloxane, 0.2 to 2 parts of a platinum catalyst, 0.05 to 0.5 part of polyether modified polydimethylsiloxane and 50 to 100 parts of an organic solvent. The invention also relates to an optical double-sided tape employing the silicone adhesive composition and used for a toughened glass protection film, and a preparation method thereof. Compared with the prior art, the optical double-sided tape provided by the invention can effectively overcome difficulty is bubble elimination during applying, enables an applied surface not to generate water ripple bubbles and snowflake bubbles and greatly improves the integral appearance and usage effect of the toughened glass protection film.

The invention relates to a carrier film for a transparent conductive film and a laminated body. The invention provides the carrier film for the transparent conductive film. The carrier film for the transparent conductive film can maintain an appropriate adhesive force in a condition that changes occur to aging environments. According to the carrier film for the transparent conductive film, at least a single surface of a support body has an adhesive layer, wherein the adhesive layer is formed by adhesive composites. The adhesive composites contain (methyl) acrylic polymers (A) and aliphatic polyisocyanic acid ester cross-linking agents (B). A glass transition temperature of the (methyl) acrylic polymers (A) is below minus 50 DEG C. The (methyl) acrylic polymers (A) is obtained through polymerization of 59.5-91 % by weight of (meth) acrylic acid alkyl esters with a carbon atom number being 2-14, 8.5-40 % by weight of hydroxyl-containing monomers, 0.001-0.5 % by weight of carboxylic-containing monomers and 0-10 % by weight of other monomers and other copolymerization monomer composition relative to the amount of monomer composition total quantity.

The invention relates to a radiation crosslinkable hot melt pressure sensitive adhesive comprised of a radiation crosslinkable polymer as component (A) based on epoxidized polyoflefins, wherein the epoxy groups are not consolidated in blocks; a tackifying resin possessing no epoxy groups as component (B); optionally a low molecular weight oligomer as component (C) that possesses reactive groups that can react with the epoxy groups of component (A); and an additive comprising a photo initiator as component (D).

A method of fabricating a wind turbine blade tubular spar, wherein the tubular spar extends along a designated axis, is made of reinforced polymer material having fibers arranged in at least two directions, and a polymer matrix incorporating the fibers, and has two caps and two webs; the method including the steps of: molding and cross-linking at least part of a cap or web in composite material; molding and cross-linking an L-shaped structure, which has two opposite parallel flanges, and at least partly incorporates the previously molded, cross-linked cap or web of composite material; repeating the above steps to mold and cross-link a further L-shaped structure; and joining the two cross-linked, L-shaped structures, with the flanges positioned facing in pairs.

The invention relates to the technical field of biological medicines and particularly relates to a silicone gel capable of removing a scar and a preparation method of the silicone gel. The silicone gel is prepared from the following raw materials in parts by weight: 1-10 parts of dimethyl silicone oil, 10-30 parts of hexamethyldisiloxane, 20-60 parts of a polydimethylsiloxane self-crosslinking polymer, 0-10 parts of a natural plant antimicrobial agent and 0-5 parts of an antipruritic agent. The dimethyl silicone oil and the polydimethylsiloxane self-crosslinking polymer can be quickly crosslinked and combined with other components under the action of the hexamethyldisiloxane and the hexamethyldisiloxane has high volatility, is capable of quickly promoting various substances to form a thin film after being crosslinked and combined, and is well tightly laminated with epidermis; hydration of skin is ensured; the silicone gel has the effects of smoothing and softening scars caused by various external causes; and meanwhile, various components work together, so that scar hyperpigmentation is significantly improved and the symptoms such as pruritus and erythema are improved.

The invention provides a double-substituted maleic amide connexon coupled with an antibody as well as a preparation method and application of the connexon. Particularly, a strong cytotoxic activity substance and biological macromolecules are coupled through a kind of new connexon. The kind of connexon can selectively act with a disulfide chain at the same time, so that the substance homogeneity and stability of a conjugate are greatly improved. The conjugate prepared from the connexon has high inhibitory activity for cell strains which express corresponding antigens. The invention further provides a preparation method and application of the conjugate.

Organopolysiloxane compositions prepared from an organopolysiloxane and a crosslinking agent comprising bis-4-methylbenzoyl peroxide (PMBP) and at least one compound from the group consisting of benzoyl peroxide, dicumyl peroxide, 2,5-dimethyl-hexane-2,5-di-tert-butyl peroxide (DHBP) and di-tert-butyl peroxide exhibit less tendency to yellow upon vulcanization, and can produce tear resistant, substantially odor free vulcanizates.