1079 results about "Diglycidyl ether" patented technology

Disclosed are Bisphenol A (BPA), Bisphenol F, Bisphenol A diglycidyl ether (BADGE), and Bisphenol F diglycidyl ether (BFDGE)-free coating compositions for metal substrates including an under-coat composition containing a polyester (co)polymer, and an under-coat cross-linker; and an over-coat composition containing a poly(vinyl chloride) (co)polymer dispersed in a substantially nonaqueous carrier liquid, an over-coat cross-linker, and a functional (meth)acrylic (co)polymer. Also provided is a method of coating a metal substrate using the BPA, BPF, BADGE and BFDGE-free coating system to produce a hardened protective coating useful in fabricating metal storage containers. The coated substrate is particularly useful in fabricating multi-part foodstuffs storage containers with “easy-open” end closures.

The shape memory polymers disclosed are a reaction product of at least one reagent containing two active amino-hydrogen or two active phenolic-hydrogen with at least one multifunctional cross linking reagent which contains at least three or more active amino- or phenolic-hydrogen or is a reagent containing at least three glycidyl ether moieties which is then further mixed with at least one diglycidyl ether reagent whereupon the resulting mixture is cured and has a glass transition temperature higher than 00C. This reaction creates crosslinking between the monomers and polymers such that during polymerization they form a crosslinked thermoset network.

A polymer matrix that may coated on an electrode is created by co-crosslinking (1) an adduct of a polyaniline formed by templated oxidative polymerization on a polymer acid; (2) a water-soluble crosslinker; and (3) a redox enzyme. The polymer matrix may be hydrated, and the absorbed water may make it permeable to, for example, glucose. The polyaniline may be polyaniline itself or a substituted polyaniline; the water-soluble crosslinker may be poly(ethylene glycol) diglycidyl ether, and the redox enzyme may be glucose oxidase. The polymer matrix may be produced by co-crosslinking (1) an adduct of an electrically conductive polymer and a polymer acid; (2) a water-soluble crosslinker; and (3) a redox enzyme in a single step at an about neutral pH, curing by drying. After hydration, the crosslinked polymer matrix may form a 3-dimensional glucose-permeable bioelectrocatalyst, catalyzing the electrooxidation of glucose.

The invention provides a novel method for preparing a latent nonionic self-emulsifying epoxy curing agent. The method comprises the following steps of: reacting long alkyl chain fatty amine with diglycidyl ether to prepare an addition product of which the middle part is connected with a long hydrophobic side chain and two ends are provided with epoxy groups; and reacting polyamine with a carbonyl compound to prepare an imine compound which contains secondary amine, and sealing the end to prepare the latent nonionic self-emulsifying epoxy curing agent. Under water environment, the imine structure in the curing agent hydrolyzes hydrophilic amino, and the curing agent contains the long hydrophobic alkyl chain, so the curing agent has the functions of emulsifying and curing an epoxy resin. The curing agent can be used for water-based epoxy emulsion coatings, water-based epoxy resin modified emulsified asphalt and cement and the like, and has excellent adhesion performance of ketimine on a wet surface. Due to the introduction of hydrophobic chains, the stability of the imine curing agent is improved in the water environment, and the performance of the curing agent in the aspect of wet surface or underwater adhesion can also be improved.

The invention relates to a high slump retaining type polycarboxylic acid water reducing agent with a sustained-release effect and a preparation method thereof. The preparation method is characterized by comprising the following steps of: preserving 5-30 mol% of monomer A, 30-60 mol% of monomer B, 20-55 mol% of monomer C at 60-80 DEG C for 1-3 h under the effect of an initiator, a chain transfer agent and a polymerization inhibitor; copolymerizing the monomers to obtain a polymer with molecular weight of 30000-100000; and then adding alkali to neutralize the polymer, wherein the total amount of the monomers A, B and C is 100 mol%; the monomer C comprises a slump retaining auxiliary 1 and a slump retaining auxiliary 2 according to a mol ratio of 1:20-13:20; the monomer A is isopentene alcohol polyoxyethylene ether, allyl polyethylene glycol, 1-methyl-2-allyl polyethylene glycol or allyl poly diglycidyl ether with polymerization degree n of 20-60; and the monomer B is acrylic acid or methacrylic acid. The high slump retaining type polycarboxylic acid water reducing agent with the sustained-release effect, provided by the invention, has the advantages of excellent slump retaining property, substantially no loss for slump degree within 3 h and wide applicability.

The invention discloses a preparation method of non-isocyanate polyurethane and application of the non-isocyanate polyurethane in spraying polyurea. The preparation method of the non-isocyanate polyurethane comprises the following steps: (1) preparing a polyether diol diglycidyl ether intermediate; (2) preparing a heterogeneous loaded potassium carbonate and potassium iodide catalyst; (3) preparing polyether bicyclo carbonate; and (4) preparing the non-isocyanate polyurethane product. The invention has the advantages as follows: 1, the preparation method is low in energy consumption, free of pollution and low in cost and has a concept of environment friendliness, low-carbon economy and atomic economy; and 2. the prepared non-isocyanate polyurethane, as a amine resin for the spraying polyurea, has better chemical resistance, hydrolysis resistance and the penetration resistance and is superior to amino-terminated polyether in adhesion to substrate and leveling property.

The invention discloses long-chain branched polyester and a preparation method thereof. The long-chain branched polyester is obtained by carrying out esterification and polycondensation on a diacid component A, a diacid component B and a bifunctional branching agent component C such as biglycidyl ester, diglycidyl ether or glycidol and the like. According to the invention, a non-toxic bifunctional branching agent is directly adopted to in situ generate branching points; the preparation method is unique, preparation process is simple and environmentally-friendly, branching reaction is uniform,branching degree is easy to regulate and control, and the high molecular weight long-chain branched polyester can be prepared; and the preparation method can be used for preparation of non-degradablepolyester and preparation of biodegradable polyester, thereby being beneficial to the realization of commercialization. The long-chain branched polyester has the characteristics of long-chain branching and large molecular weight in structure and is beneficial to increase of melt strength and improvements of blow molding and foaming processing performance.

The invention relates to an epoxy acrylate prepolymer resin and a preparation method thereof and an application in a photocurable coating. The prepolymer has the characteristics of low viscosity, good flexibility, good adhesion and basic colorlessness and can be used for preparing various photocurable coatings and coating various base materials, such as bamboo floor. The epoxy acrylate prepolymer resin is prepared by epoxy resin and methacrylate under the action of the catalyst through ring-opening esterification and is characterized in that the prepolymer resin comprises the following components according to parts by weight: 100 parts of epoxy resin, 35-50 parts of methacrylate, 2-8 parts of long chain saturated dicarboxylic acid, 12-25 parts of polyethylene glycol, 8-12 parts of diglycidyl ether, 0.01-0.05 parts of antioxidant, 0.2-0.5 parts of catalyst and 0.005-0.01 parts of polymerization inhibitor. The viscosity reduction, toughening and modification are carried out for the epoxy acrylate prepolymer resin, the flexibility and strength are improved, the viscosity of the prepolymer resin is effectively reduced, and the prepolymer resin is applicable for preparing the photocurable coatings.

The invention discloses an acrylic acid rosin and epoxy resin prepolymer and a preparation method thereof. Acrylic acid rosin is molten, diglycidyl ether is added to the molten acrylic acid rosin and reacts with the same under the action of esterification catalyst at the reaction temperature of 120-200 DEG C until the acid number of the reaction system is lower than 10mgKOH/g, the product of reaction is cooled and the acrylic acid rosin and epoxy resin prepolymer is obtained. The acrylic acid rosin and epoxy resin prepolymer is prepared by cheap and available natural products, has excellent mechanical property and uvioresistant property, is especially suitable to manufacture outdoor weather-resisting electric engineering insulating material and can be used as weather-resisting epoxy adhesive, epoxy resin coating, hydrated epoxy coating and the like.

The invention relates to a preparation method of 1,4-butanediol diglycidyl ether cross-linked sodium hyaluronate gel. The method comprises the steps of: by taking high-concentration sodium hyaluronate solution as reaction matrix, performing first cross-linking for a longer time under the low-temperature condition by adding less cross-linking agent, then performing secondary deep cross-linking under high-temperature condition, and finally processing and pelleting through short-time dialysis technique, thereby obtaining the sodium hyaluronate gel product. With the method, the cross-linking condition of the high-concentration cross-linking agent under the traditional high-temperature condition can be eliminated, milder secondary depth cross-linking condition is adopted, the reaction efficiency of the less cross-linking agent can be greatly improved, the residual cross-linking agent is more easily removed, and the excellent biocompatibility of the cross-linked sodium hyaluronate gel can be ensured. The method is simple in preparation technique, excellent in controllability and easier to practically produce on large scale.

The invention discloses a flame-retardant high temperature-resistant epoxy resin composition capable of being used for pultrusion and a preparation method thereof. The flame-retardant high temperature-resistant epoxy resin composition capable of being used for pultrusion comprises three components of A, B, and C, and is characterized in that the A component comprises diglycidyl ether epoxy resin, cycloaliphatic epoxy resin and an epoxy resin active diluents; the B component comprises cycloaliphatic acid anhydride, arene poly(acid anhydride), a thermoplastic phenolic resin curing agent, a maleic anhydride-grafted rubber flexibilizer, a polysiloxane toughening modifier, and an epoxy resin curing accelerator; the C component comprises an inorganic fire retardant which has an ultrafine particle size and is subjected to surface modification by a silane coupling agent and a hydrophobic modifier; the weight ratio of the A, B, and C components is that A:B:C=100:50-250:20-150.

The invention discloses epoxy anti-corrosive paint used for underwater concrete. Liquid epoxy resin DER351 is used as a base material; polysulfide rubber is used as a flexibilizer; pentanediol diglycidyl ether 6286 is used as a diluent; zinc phosphate and iron oxide red are used as active anti-corrosive pigment; spherical silicon carbide, ceramic microspheres, mica iron oxide, sericite and precipitate vitriolic barium are used as fillings; cashew shell oil, modified phenolic aldehyde amine and modified aliphatic amine are used as curing agents; and a silane coupling agent 1121 is used as an adhesion promoter. With the cooperation of functional promoters, the raw materials are made into solvent-free double-component epoxy anti-corrosive paint used for underwater concrete through conventional preparation technique equipment. The epoxy anti-corrosive paint used for underwater concrete is highly environmental-friendly and can be directly painted or smeared on damp interfaces of underwater concrete and rapidly solidified into films; the coating has great adhesion and strong abrasion resistance and corrosion prevention. The epoxy anti-corrosive paint used for underwater concrete is widely applied to the corrosion prevention of various underwater concrete facilities.

Disclosed is a holographic optical recording medium, comprising a recording layer containing a three dimensionally cross-linked polymer matrix, a radically polymerizable compound, and a photo radical polymerization initiator, the three dimensionally cross-linked polymer matrix comprising a cured material of a reaction product between a diglycidyl ether and an amine, the diglycidyl ether being selected from the group consisting of 1,6-hexanediol diglycidyl ether and diethylene glycol diglycidyl ether.

An epoxy resin containing side-chain-tethered caged POSS and a preparation method thereof as well as epoxy resin material containing POSS-epoxy and a preparation method thereof are disclosed. The epoxy resin containing side-chain-tethered caged POSS (POSS epoxy) is formed by tethering of POSS group to the side chain of the diglycidyl ether of bisphenol A (DGEBA) epoxy resin. The preparation method of the POSS epoxy includes a step of reacting epoxy resin with caged POSS to form epoxy resin containing side-chain-tethered caged POSS (POSS-epoxy). The preparation method of epoxy resin material containing POSS-epoxy includes a step of reacting DGEBA epoxy resin with POSS-epoxy to get epoxy resin material containing POSS-epoxy. The POSS-epoxy is distributed evenly in the epoxy resin material with POSS-epoxy.

The invention discloses a reversible repair functional matrix resin for pultrusion and a preparation method of the matrix resin. The matrix resin is prepared from the following raw materials in parts by weight: 30-60 parts of 4,4'-diallylbisphenol A diglycidyl ether epoxy resin, 20-35 parts of furfuryl amine, 15-30 parts of 4,4'-bismaleimide diphenylmethane, 0-25 parts of liquid epoxy resin and 5-15 parts of curing agent. The preparation method comprises the following steps: dissolving the 4,4'-diallylbisphenol A diglycidyl ether epoxy resin in a formula amount into a solvent, slowly adding the furfuryl amine into a reaction container for reacting, adding the 4,4'-bismaleimide diphenylmethane, liquid epoxy resin and curing agent, reacting and mixing for a hour, performing reduced pressure distillation to remove the solvent, and cooling. The reversible repair functional matrix resin for pultrusion and the preparation method of the matrix resin disclosed by the invention have the beneficial effects that the matrix resin has good molding manufacturability, the molecular structure contains furan and imide structures, the heating and repairing functions of the prepared composite material can be realized by virtue of a Diels-Alder reversible reaction, and the matrix resin also has the advantages of high strength and high heat resistance.

The invention relates to a preparation method of a hyperbranched polyetheramine-grafted GO adsorbent used for heavy metal and dye adsorption as well as an application thereof. The hyperbranched polyetheramine-grafted GO adsorbent is characterized in that polyether diglycidyl ether and a polyamine monomer are employed to prepare the hyperbranched polyetheramine HPEA, an alkalescence catalyst grafting oxidation graphene GO is used, so that the hyperbranched polyetheramine-grafted oxidized graphene GO-HPEA. The adsorbent preparation method is simple and easy, the adsorption quantity for the heavy metal ion or cation dye can be more than 500mg/g, and the hyperbranched polyetheramine-grafted GO adsorbent has the advantages of easy solid-liquid separation and repeatable utilization, and can be used for high efficiency treatment of heavy metal and dye in waste water.

The invention discloses a synthesis method of water-absorbent resin with a novel structure. The synthesis method is characterized by comprising, by weight, 200-300 parts of acrylic acid, 1-5 parts of cross-linking agents, 700-800 parts of deionized water, 0.5-2 parts of oxidation reduction initiating agents, 50-80 parts of octylene glycol, 10-80 parts of ethyl alcohol, 5-15 parts of butanediol diglycidyl ether, 20-40 parts of aluminum sulfate, 2-5 parts of silicon dioxide and sodium hydroxide solution. According to the synthesis method, the acrylic acid is firstly polymerized at the indoor temperature and then neutralized by the aid of the sodium hydroxide solution, triple cross-linking treatment of the surface is performed, so that the water-absorbent resin has high gel intensity and pressurizing absorption capacity, good liquid passing performance and water retention capacity and fundamentally solves the problem that gel intensity and absorption ratio cannot be completely considered, and the synthesized water-absorbent resin is quite excellent in performance and has high infiltration speed, super-low reverse osmosis and super-dry and comfortable surfaces when being applied to paper diapers.

The invention relates to an anion chromatographic column a preparation method thereof, particularly relates to a preparation method of a surface-grafting anion chromatography stationary phase. The method disclosed herein is characterized by: preparing monodispersed linear polystyrene microspheres seeds by dispersion polymerization, activating the seeds, then synthesizing polystyrene-divinyl benzene-glycidyl methacrylate microballoons by one-step seed swelling method, and extracting to remove the pore forming agent; adopting multi-step grafting synthetic method, taking methylamine and 1,4-butanediol diglycidyl ether as raw materials, and introducing a large amount of positively charged quaternary ammonium groups as the anion exchange functional group to the surface of the prepared polystyrene-divinyl benzene-glycidyl methacrylate microballoons; and packing by homogenate method. According to the invention, the method disclosed herein has the advantages of low cost and simple process, the prepared filling material has uniform granularity and has no need to be screened, and the particle size distribution is narrow.

It is an object of the present invention to provide a fiber reinforced composite material combining good properties such as toughness and impact resistance and to provide an epoxy resin composition to obtain this. This object is achieved by the an epoxy resin composition comprising the following [A], [B], [C], and [D]:

• • [A] a diglycidyl ether-type epoxy resin having a molecular weight of 1,500 or more;
  • [B] an epoxy resin in which an SP value of a structural unit thereof is greater by 1.5 to 6.5 than an SP value of a structural unit of [A];
  • [C] a diglycidyl ether-type epoxy resin having a molecular weight of 500 to 1,200; and
  • [D] an epoxy resin curing agent,

in a ratio that satisfies the following formulas (1) to (4):

0.2≦A/(A+B+C+E)≦0.6;  (1),

0.2≦B/(A+B+C+E)≦0.6;  (2),

0.15≦C/(A+B+C+E)≦0.4; and  (3),

0≦E/(A+B+C+E)≦0.2,  (4)

• • wherein A, B, and C represent weights of [A], [B], and [C], respectively, and E represents a weight of an epoxy resin other than [A], [B], and [C].

The invention discloses a nonionic self-emulsifying water-based epoxy curing agent with Gemini surfactant structure, of which the molecular general formula is disclosed in the specification. The preparation method comprises the following steps: 1) adding alkyl phenol, polyamine and formalin in a solvent to carry out Mannich reaction, and removing the solvent and byproduct after the reaction finishes, thereby obtaining Mannich amine containing primary amine group; and 2) sufficiently reacting the Mannich amine containing primary amine group with diglycidyl ether, cooling after the reaction finishes, adding water, and sufficiently dispersing to obtain an emulsion, thereby obtaining the product. The synthesis technique is simple and pollution-free; the synthesized curing agent does not need to perform salification reaction to implement self-emulsifying action by using organic acid; the epoxy curing agent has the advantages in the Gemini surfactant and has the characteristics of excellent wettability, excellent emulsibility, excellent stability and the like; and the epoxy curing agent can directly emulsify and cure the liquid epoxy resin, and can also cure an epoxy resin dispersion solution.

The invention discloses a preparation of a protective agent for reinforcing fibroin and an application thereof. The protective agent is formed by two parts of fibroin solution and an auxiliary agent, namely, an ethylene glycol diglycidyl ether aqueous solution, and the preparation of the protective agent is that A) silk fiber is put into Na2CO3 solution and boiled for degumming; B) the silk fiber after the treatment is put into a CaCl2 solution for dissolution at high temperature, and then dissolving liquor is cooled and filtered, and filtrate is put into a dialysis bag and arranged in deionized water for dialysis to obtain pure fibroin solution; C) the obtained fibroin solution is arranged in a spray drier for spraying and drying to form soluble fibroin powder, and reserved for later use; D) the soluble fibroin powder is used for preparing the fibroin solution by the deionized water; and E) the ethylene glycol diglycidyl ether aqueous solution is prepared; when in use, the fibroin solution is sprayed on silk to be reinforced and then the ethylene glycol diglycidyl ether aqueous solution is sprayed on the silk to be reinforced; the preparation can substantially improve the strength of fragile silk and is applied to the protection of silk cultural relics, and has the advantages of simple method, convenient operation, no influence on the appearance of the silk cultural relics, and the like.

The invention discloses a thermosetting resin composition. The thermosetting resin composition comprises the following solids by weight: (a) a modified bismaleimide prepolymer, (b) a curing accelerator, (c) a fire retardant, and (d) inorganic fillers. A preparation method of the modified bismaleimide prepolymer comprises the following step: heating bismaleimide and a composite allyl compound in a reaction bottle, wherein the composite allyl compound is composed of a first-class allyl compound and a second-class allyl compound, the first-class allyl compound is selected from one or more of diallyl bisphenol A, diallyl bisphenol S, allyl phenoxy resin and diallyl diphenyl ether, and the second-class allyl compound is selected from one or more of diallyl bisphenol A diglycidyl ether, diallyl bisphenol S diglycidyl ether and diallyl diphenyl ether diglycidyl ether. A laminated board integrates high heat resistance, high toughness, low water absorption, excellent dielectric property and good fire resistance.