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33 results about "Triphenylmethane triisocyanate" patented technology

Resin self-hardening core sand for casting train iron castings and preparing method of resin self-hardening core sand

The invention discloses a resin self-hardening core sand for casting train iron castings and a preparing method of the resin self-hardening core sand. The resin self-hardening core sand is prepared from, by weight, 160-180 parts of sea sand, 20-30 parts of carborundum, 16-20 parts of refiring magnesia, 10-14 parts of paper clay, 6-8 parts of chalk soil, 10-15 parts of furan resin, 12-14 parts of cashew nut shell oil modified phenolic resin, 4-6 parts of polyimide, 3-5 parts of rare earth tailing, 5-7 parts of pandermite, 8-10 parts of waste foam glass, 3-5 parts of ferro silicon nitride, 1-2 parts of N-(beta-aminoethyl)-gamma-aminopropyl triethoxy silane, 2-4 parts of p-toluenesulfonic acid, 3-5 parts of phosphoric acid, 4-6 parts of castor oil maleic anhydride acid esters, 8-10 parts of triphenylmethane triisocyanate and 2-4 parts of styrene. According to the furan resin self-hardening sand, mixed resin is adopted, the method of adding single resin is changed, mutual effects between different kinds of resin including the furan resin, the cashew nut shell oil modified phenolic resin, the polyimide and the like are adopted for enabling the core sand to have the beneficial effects of being high in strength, small in gas-forming amount, low in thermal expansivity, good in breathability, good in collapsibility and the like, and the produced castings are high in degree of precision and good in surface quality.
Owner:江阴联华铸造有限公司

Preparation process of polyurethane-based thermal insulation type multi-layer composite waterproof coiled material

The invention discloses a preparation process of a polyurethane-based thermal insulation type multi-layer composite waterproof coiled material. The specific preparation process of the preparation process includes the following steps of: simultaneously adding polyphosphooxy polyamine, dibutyl dilaurate, diisopropanolamine and water into a stirring kettle; performing stirring and mixing, then addingtriphenylmethane triisocyanate into the stirring kettle; performing stirring and mixing, pouring an obtained mixture into a mold so as to subject the mixture to foaming and shaping; rolling obtainedpolyurethane foam for multiple times; and adhering a layer of polyvinyl chloride sheet to each of the upper surface and the lower surface of a polyurethane foam sheet to obtain the thermal insulationtype multi-layer composite waterproof coiled material. The toughening modifier prepared by the preparation method disclosed by the invention contains two sulfydryl groups which can react with chlorineatoms on a PVC chain, so that the toughening modifier can be introduced on the PVC chain; the toughening modifier contains a large amount of ester groups, so that Van der Waals' force among polyvinylchloride molecules can be weakened, the mobility of polyethylene molecular chains is improved, the crystallinity of the polymer molecular chains is reduced, the viscosity of the polymer is reduced, and flexibility is enhanced.
Owner:徐磊

Regenerated PET polyester, regenerated flame-retardant PET foam material and preparation method of regenerated flame-retardant PET foam material

PendingCN114805775AFlame retardantGuaranteed melt uniformityPolymer sciencePtru catalyst
The invention discloses regenerated PET polyester, a regenerated flame-retardant PET foam material and a preparation method thereof, and relates to the technical field of engineering plastics. The invention provides regenerated PET polyester. The regenerated PET polyester is prepared from the following components in parts by weight: 5 to 50 parts of recycled PET polyester, 40 to 85 parts of terephthalic acid, 30 to 45 parts of ethylene glycol, 0.01 to 0.1 part of a catalyst, 0.01 to 1 part of a stabilizer, 0.2 to 4 parts of a nucleating agent, 0.01 to 0.5 part of an antioxidant and 0.02 to 0.15 part of a branching agent, wherein the branching agent is selected from at least two of triphenylmethane triisocyanate, triphenyl isocyanate thiophosphate, tri (4-aminophenyl) amine, pyromellitic dianhydride, pentaerythritol, bisphenol A diglycidyl ether and triglycidyl isocyanurate. The invention also provides a regenerated flame-retardant PET foam material containing the regenerated PET polyester and a flame retardant, the prepared foam material not only has flame retardant property, but also can ensure the melt uniformity and various stable properties of the material, and the preparation process is safe, reliable, environment-friendly and pollution-free.
Owner:CHINA RESOURCES PACKAGING MATERIALS CO LTD

Anti-UV irradiation silicone rubber compound and preparation method thereof

The invention discloses an anti-UV irradiation silicone rubber compound and a preparation method thereof. The rubber compound consists of the following raw materials by weight: 40-60 parts of high phenyl silicone rubber, 25-45 parts of methyl MQ silicon resin, 1.5-2.5 parts of 4,4',4''-triphenylmethane triisocyanate, 5-10 parts of aluminum magnesium silicate, 3-6 parts of white factice, 2-3 parts of cobalt 2-ethylhexanoate, 2-3 parts of octamethyl cyclotetrasiloxane, 3-4 parts of tert-Butyl hydroperoxide, 3-6 parts of ethyleneglycol dimethacrylate, 2-4 parts of N,N'-dicyclohexylcarbodiimide, 10-15 parts of waste tire rubber powder, 2-3 parts of Di-t-butoxydiacetoxysilane, 8-14 parts of light calcium carbonate, 5-10 parts of glycerol tribenzoate, 4-8 parts of dipropylene glycol monosalicylate, 1-2 parts of 4-tert-butylphenol 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and 2-4 parts of an assistant. The silicone rubber compound provided by the invention has excellent anti-ultraviolet irradiation performance, good thermal stability to ultraviolet, and can be used for a long time under sunlight; and the rubber compound has excellent mechanical strength, high and low temperature resistance, corrosion resistance, electrical insulation property, long service life, wide application range and low cost.
Owner:天长市荣盛有机硅科技有限公司

Preparation method of rural experience type light-storing luminescent material

InactiveCN111961364AIncrease the function of light storage and light emissionHard to quenchLuminescent paintsPolyurea/polyurethane coatingsTriphenylmethane triisocyanateWeather resistance
The invention provides a preparation method of a rural experience type light-storing luminescent material. The preparation method comprises the following specific steps: dehydrating a mixed solution of dihydric alcohol and trihydric alcohol at 100-110 DEG C under the vacuum condition of 0.05-0.2 MPa for 3-5 hours; adding an aliphatic ketone solution and an organic tin solution into the dehydratedalcohol solution, mixing, heating to 70-80 DEG C, adding triphenylmethane triisocyanate, and carrying out heat preservation reaction for 1.5-2.5 hours at 70-80 DEG C; and adding the light-storing luminescent material into the catalytic reaction, and continuing the heat preservation reaction to obtain the single-component light-storing polyurethane luminescent material. According to the luminescentmaterial prepared by the method, the light-storing and light-emitting functions of the coating are improved, the problems of the traditional fluorescent coating are solved, and the obtained luminescent material has the advantages of increased light-emitting stable strength, difficulty in migration, lasting and stable maintenance of a light-emitting group, excellent glossiness and weather resistance, difficulty in quenching and typical light-storing and light-emitting enhancement effect.
Owner:FUJIAN SPRING ECOLOGICAL TECH CO LTD

Method for preparing PBT (polybutylene terephthalate) resin with anti-bacterial function

The invention provides a method for preparing PBT (polybutylene terephthalate) resin with an anti-bacterial function. The method comprises steps as follows: 100 parts of PTA pure terephthalic acid, 50-100 parts of 1,4-BDO (butanediol) and 0.2-2 parts of a composite titanium catalyst are added to an esterification reaction kettle, are stirred uniformly and react for 60-270 min at the esterification temperature of 205-225 DEG C under the normal pressure to obtain an esterification reaction product (BHBT); the esterification reaction product (BHBT) is introduced into a polycondensation reaction tank, the reaction temperature is controlled in a range from 250 DEG C to 260 DEG C, a reaction is performed for 1 h under the normal pressure, 1-5 parts of a TTI (triphenylmethane triisocyanate) modified negative ion powder chain extender are added, and the mixture reacts for 1 h under the condition of low vacuum (under the pressure reduced from 50 kPa to 2.5 kPa) and then reacts for 4-7 h under the condition of high vacuum (under the pressure reduced from 133 Pa to 33 Pa) until the power of a stirring paddle shaft is not increased. According to the method, negative ion mineral powder is organically combined in the PBT molecular chain, so that the product has the permanent anti-bacterial function.
Owner:QUANZHOU NAISI MATERIAL TECH
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