209 results about "Bisphenol A 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 present invention relates to a low-temp. soldified resin emulsion for cathodic electrophoretic coating. It is made of 20-70% of modified epoxy resin, 5-50% of polyamine and 10-30% of closed polyisocyanate which can completely declosed at 120-140 deg.C, through the processes of chemical reaction, mixing, neutralizing with organic acid and dispersing in water, in which the modified epoxy resin is made up by using epoxy compound and polyhydroxylated compound and adopting epoxy resin synthesis method under the action of catalyst, its molecular weight is 300-3000, and the pure solid weight ratio of epoxy compound and polyhydroxylated compound is 5-8/2-5. The described epoxy compound is bisphenol A diglycidyl ether and glicidyl ether containing flexible chain or glycidyl ester, and the polyhydroxylated compound is bisphenol A and polyhydroxylated compound containing flexible chain.

A coating composition comprising a resinous binder and up to 10 percent by weight of a phosphatized polyester. The compositions are useful for coating containers of all sorts such as food and beverage containers, and the phosphatized polyester provides enhanced adhesion of the coating to the container substrate. The compositions can be formulated to be substantially free of bisphenol A (BPA) and bisphenol A diglycidyl ether (BADGE).

The invention discloses a method for manufacturing polyesterimide wire enamel, which comprises the steps of preparing polyesterimide resin and letdown treatment. During the preparation of polyesterimide resin, bisphenol A diisopropanol ether is used to replace part of Ethylene glycol (EG) is used as a reactant, and the imidization reaction is carried out by feeding in steps. The method of the invention can overcome the disadvantages of poor flexibility, low adhesion and small DV value of the polyesterimide enameled wire produced by the prior method. The polyesterimide wire enamelled varnish manufactured by the method of the invention has a large line coating process margin and a fast line coating speed. The method of the invention can be used to manufacture novel 180 grade high DV value polyesterimide wire enamels.

A coating composition comprising a resinous binder and up to 10 percent by weight of the reaction product of (i) a phosphorus acid, and (ii) a polyglycidyl ether of cyclohexane dimethanol. The compositions are useful for coating containers of all sorts, such as food and beverage containers, and the reaction product provides enhanced adhesion of the coating to the substrate. The compositions can be formulated to be substantially free of bisphenol A (BPA) and derivatives thereof such as bisphenol A diglycidyl ether (BADGE).

A coating composition comprising a polyether polyol having a hydroxyl functionality of 3 to 8 and the reaction product of:

(i) a phosphorus acid, and

(ii) a polyepoxide and/or a polyester.

The compositions are useful for coating containers of all sorts, such as food and beverage containers. The compositions can be formulated to be substantially free of bisphenol A (BPA), bisphenol A diglycidyl ether (BADGE) and other derivatives of BPA.

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.

The invention discloses room temperature cured high-temperature resistant epoxy adhesive. The adhesive is double-component epoxy adhesive composed of resin component and curing agent component, with a weight ratio of 100:(45-60) when in use. The resin component is composed of carboxyl-terminated liquid nitrile-butadiene rubber modified tetraglycidylamine epoxy resin 100-120 weight parts and bisphenol A diglycidyl ether 25-40 weight parts; and the curing agent is prepared from (by wt%) modified amine 5.8-7.2, polyamide 18-25, 4,4-diaminodiphenylmethane 15.2-16.5, imidazole 2.3-4.8, tertiary amine catalyst 0.75-1.5, filling 16-40, and inorganic filling 1.5-3.5. The invention has curing temperature of room temperature, and shearing strength reaching 4.5 MPa at 200 DEG C.

The instant invention relates to compositions comprising a benzoxazine resin and an advancement resin based on bisphenol A diglycidyl ether and bisphenol S and, optionally, ferrocene and aluminium trihydrate. Such compositions are, when cured to form polymeric networks, difficultly inflammable and resistant to high temperatures. Such compositions may especially be used in the production of printed wiring boards.

The invention discloses a method for preparing hybrid non-isocyanate polyurethane by carbon dioxide, including the following steps: first, synthesizing soybean oil based pentabasic cyclic carbonate through reaction of the carbon dioxide and epoxidized soybean oil; second, synthesizing bisphenol A-type cyclic carbonate through reaction of the carbon dioxide and bisphenol A diglycidyl ether; third, synthesizing the hybrid non-isocyanate polyurethane through reaction of the synthesized cyclic carbonates and amine. The method has the advantages of fine comprehensive mechanical properties and simplicity in preparation.

The invention discloses a halogen-free flame-retardant polyimide resin composition, comprising, by weight, bismaleimide a, composite allyl compound b, and phosphorous compound c. A preparing method of the halogen-free flame-retardant polyimide resin composition includes: heating the bismaleimide, the composite allyl compound and the phosphorous compound in a reaction flask for reaction, with the composite allyl compound being composed of first allyl compound and second allyl compound. The first allyl compound is made from one or any of diallyl bisphenol A, diallyl bisphenol S, allyl phenoxy resin, and diallyl diphenyl ether. The second allyl compound is made from one or any of diallyl bisphenol A diglycidyl ether, diallyl bisphenol S diglycidyl ether, diallyl diphenyl ether diglycidyl ether. A laminate made from the halogen-free flame-retardant polyimide resin composition has the advantages of high resistance, high toughness, low water absorption rate, and excellent dielectric property and flame retardance.

An exemplary coating of the invention, suitable for use as an interior coating for metal cans, comprises (a) a polyester resin; (b) a resol resin; and (c) a solvent, the coating being substantially free of bisphenol-A-diglycidyl-ether and bisphenol-F-diglycidyl ether (e.g., 'BADGE' or 'BADGE-type' components), and preferably also substantially free of polyvinyl chloride.

The present invention relates to a composition, which is useful for producing coatings for metal sheet substrates of metal cans for storing and/or transporting food or beverages or a lid thereof, and which comprises the following components:

• (a) 30 to 90 wt. % of a polyvinylchloride-(PVC)-polymer,
• (b) 7 to 25 wt. % of an acrylic resin,
• (c) 3 to 40 wt. % of a crosslinking agent, which is produced from phenol, para-tert.-butylphenol, xylenol or a mixture thereof, and formaldehyde,
• (d) 0 to 8 wt. % additive,
• (e) 0 to 50 wt. % pigment and
• (f) a solvent-component,

where all weight percentages are on the basis of the total dry weight of the coating composition (without solvents) and the composition is substantially free of bisphenol-A-diglycidyl-ether (“BADGE”) and also substantially free of bisphenol-A-resins. The composition provides metal can coatings that have suitable flexibility, scratch resistance, adherence and sterilization resistance when processed in contact with food. The coatings are suitable for three-piece cans as well as deep-drawn metal cans. In particular they are, however, useful for lids that are to be torn open due to their extraordinary flexibility and sterilization resistance.

The invention discloses a hydrolysis-resistant thermoplastic polyurethane elastomer containing the following components in parts by mass: 100 parts of thermoplastic polyurethane resin, 3-20 parts of hydrolysis-resistant compound, 0.15-0.3 part of antioxidant and 0.2-0.4 part of lubricant. The thermoplastic polyurethane resin is polyester type polyurethane resin; the hydrolysis-resistant compound is a mixture of one or more of the following matters: polycarbodiimide, 1,2-epoxy-3-phenoxypropane, bisphenol A diglycidyl ether, 3-(2,3-glycidoxy)propyl-trimethoxy silane and maleic anhydride grafted styrene-ethylene/butylene-styrene block copolymer; the antioxidant is a mixture of one or both of pentaerythritol tertrakis(methyl-beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) and 4,4'-di-tert-octyldiphenylamine; and the lubricant is a mixture of one or both of zinc stearate and calcium stearate. The hydrolysis-resistant thermoplastic polyurethane elastomer disclosed by the invention is suitable for being taken as electric wire and cable sheath layer materials, medical materials, various hoses, shoe materials, sealing elements, wear-resistant components and the like.

The invention belongs to the technical field of purification enrichment pre-treatment for food packaging material pollutant biphenol substance. The purification enrichment pre-treatment technology comprises the following steps of: activating a C18 inverse solid phase extraction small column by methanol and ultra pure water and then loading, firstly leaching with 20% of methanol aqueous solution, then eluting with methanol, drying eluate with nitrogen in a blowing manner, redissolving residue with acetonitrile, filtering, and then carrying out liquid chromatography-fluorescence detection. By adopting the pre-treatment technology provided by the invention, recovery ratio of six biphenol substances (biphenol A (BPA), biphenol B (BPB), biphenol E (BPE), biphenol F (BPF), biphenyl A diglycidyl ether (BADGE) and biphenol F diglycidyl ether (BFDGE)) is 75.92-102.10%, relative deviation is respectivel lower than 5%, and accuracy and precision are high.

The invention discloses a carbon nanotube reinforced anti-oxidation geogrid, which is composed of the following raw materials in parts by weight: 1.6-2 calcium acetylacetonate, 0.7-1 alkenyl succinic anhydride, and 1-2 barium stearate , lithium aluminum hydride 0.1‑0.3, 4‑dimethylaminopyridine 0.3‑1, antioxidant 10100.4‑1, multi-walled carbon nanotubes 10‑15, antioxidant 1680.6‑1, polypropylene imine 10‑17, acrylic acid Tert-butyl ester 6-8, high-density polyethylene 140-160, bisphenol a diglycidyl ether 0.3-1, 2-mercaptobenzimidazole 0.6-1, dibutyl maleate 4-6, cycloalkane Lithium Oxide 0.4‑1. The invention greatly reduces the content of free radicals participating in the automatic oxidation chain reaction of polymers, delays the oxidation degradation process of polymers, and improves the oxidation resistance of finished materials.

The invention discloses a method for synthesizing bisphenol A diglycidyl ethers through halogen-free epoxidation, which is characterized by comprising the following steps of: adding bisphenol A diallyl ethers, a solvent I and a phosphotungstic acid quaternary ammonium salt catalyst into a reactor, adding a hydrogen peroxide solution into the reactor while stirring, raising the temperature of a reactant to 30-80 DEG C, and reacting the obtained object for 5-24 hours at a temperature of 30-80 DEG C so as to obtain a reacted material; cooling the reacted material to room temperature, separating an organic phase, after the separated organic phase is subjected to distillation recycling so as to obtain an organic solvent, uniformly stirring and mixing the rest material and ethyl acetate, carrying out filtering on the obtained product, and after filter liquor is subjected to distillation recycling so as to obtain ethyl acetate, obtaining a coarse product; and carrying out column chromatography on the coarse product by using a solvent III so as to obtain bisphenol A diglycidyl ethers. After the method disclosed by the invention is adopted, no organic chlorine ion contains in the process of synthesis, a synthesized target product not only has no organochlorine heterogeneous client base, but also is low in product viscosity, good in performance, simple in process, easy to operate, high in safety, low in pollution and strong in practicability.

The invention provides a repairable cross-linked solid polymer electrolyte as well as a preparation method and application thereof, and the repairable cross-linked solid polymer electrolyte is prepared by the following method: dispersing and dissolving terephthalaldehyde, bisphenol A diglycidyl ether, polyethylene glycol diamine and a lithium salt in an acetonitrile solvent, and carrying out stirring for 2-6 hours to obtain a transparent and uniform mixed solution A; dropwise adding the mixed solution A onto a polytetrafluoroethylene mold, and volatilizing acetonitrile at room temperature to obtain a sol-like substance B; and putting the sol-like substance B into a vacuum drying oven, carrying out polymerization reaction to completely crosslink and solidify the sol-like substance B, and continuously heating to dry the sol-like substance B to prepare the polymer electrolyte. According to the invention, a dynamic imine covalent bond is introduced into the polymer electrolyte to form thesolid network-shaped polymer electrolyte, so that the solid network-shaped polymer electrolyte can be repaired in time when fracture occurs in the use process; the prepared network-like polymer electrolyte has high thermal stability and dendritic-crystal-free morphology, and has excellent electrochemical properties such as ionic conductivity and lithium ion migration number.