40 results about "Allyl halides" patented technology

A golf ball having a core, and at least one layer about the core, wherein the core or the layer is formed from partially or fully neutralized butyl ionomers or their blends to improve the resiliency and impact durability over a conventional butyl rubber. The core comprises a thermoplastic material, a thermoset material, or a rubber-based material, while at least one layer is formed from a composition comprising a partially or fully neutralized butyl rubber ionomer. The butyl rubber ionomer comprises repeating units derived from at least one isoolefin monomer, at least 0.5 mol % of repeating units derived from at least one multiolefin monomer, at least 0.5 mol % of repeating units derived from an allylic halide, and at least 0.5 mol % of an ionomeric moiety. The isoolefin comprises isobutylene, the multiolefin comprises isoprene and the allylic halide comprises a bromide.

The invention relates to a synthesis method of a reactive hindered phenol oxidation-resistant polyolefin additive and application thereof. The synthesis method comprises the following steps that a catalyst and 2,4 dyhydroxyl diphenylketone are dissolved in a solvent according to the molar ratio to 1-1.2 to 1, stirring reaction is performed at the temperature of 40-60 DEG C for 2-8 hours, then allyl halide is slowly and dropwise added, constant temperature reaction is performed at the temperature of 40-60 DEG C for 2-6 hours, standing and crystallization are performed, and a product is filtered to obtain the reactive hindered phenol oxidation-resistant polyolefin additive. The reactive hindered phenol oxidation-resistant polyolefin additive is applied to a polyolefin composite material, can improve the compatibility between the additive and polyolefin resin, has the advantages of extraction resistance, difficult migration, difficult volatilization and no environmental pollution, can keep a lasting oxidation-resistant effect, can capture peroxy radicals and can also capture alkyl free radicals, can play the oxidation-resistant effect simultaneously in the surface and interior of a polymer and is high in oxidation-resistant efficiency.

The invention belongs to the field of preparation of aromatic sulfones organic compounds, and in particular relates to a method for preparing bisphenol S allyl ether (including bisphenol S diallyl ether and bisphenol S monoallyl ether). The method provided by the invention comprises the following steps of: (1) carrying out an etherification reaction: heating and reflowing bisphenol S and allyl halides in an alkaline solution to react for 1-8 hours under the effect of a phase transferring catalyst; (2) recycling the catalyst; (3) separating diallyl ether (DAE) and allyl bisphenol ether (ABE); (4) refining the DAE; and (5) refining the ABE. The method disclosed by the invention has the advantages of simpleness in operation, convenience for recycling the catalyst and the solvent, environment friendliness, high product yield and purity and low manufacturing cost; and the method is suitable for the industrial production.

The present invention pertains to the technical field of organic synthesis, providing a method to prepare allyl pentaerythritol ether compound mainly composed of allyl pentaerythritol ether. The preparation method includes the following steps: (1) pentaerythritol, alkali metal hydroxide, water and inert organic solvent are mixed according to a proper ratio, heated and agitated during reaction; (2) a proper dosage of phase-transfer catalyst is added into the reactant mixture, allyl halide is added slowly and supplementary phase-transfer catalyst is added when the allyl halide is added, and then the mixture is agitated to end the etherification reaction; (3) after reaction, the salt, the unreacted alkali-metal hydroxide and the phase-transfer catalyst in the system are removed by water, the separated organic layer is distilled under normal pressure to remove the light component, and the desired product is achieved by vacuum distillation. The preparation method has the advantages of high yield of target products, low production cost, simple operation process, high security, and industrial production can be realized easily.

The invention relates to a chiral allyl ester compound and a preparation method thereof. The structural formula of the chiral allyl ester compound is represented in the description. The preparation method comprises the following steps: adding raw materials (carboxylate and allyl halide) into an organic solvent, then adding an iridium catalyst, which is prepared by reacting an iridium complex with a ligand, adding additives, controlling the reaction temperature in a range of 0 to 120 DEG C, carrying out reactions for 1 to 36 hours, and separating the reaction products so as to obtain the chiral allyl ester compound. In the prior art, when active allyl halide is taken as the substrate, the reaction yield is low and the enantioselectivity is bad, and the provided preparation method overcomes the problems mentioned above. Moreover the preparation method has the characteristics of high reaction yield, good region-selectivity, and high enantioselectivity, and thus is widely used in the organic synthesis methodology and natural product synthesis.

Boronic esters and boronic acids are synthesized at ambient temperature in an ethereal solvent by the reaction of Grignard reagents with a boron-containing substrate. The boron-containing substrate may be a boronic ester such as pinacolborane, neopentylglycolborane, or a dialkylaminoborane compound such as diisopropylaminoborane. The Grignard reagents may be pre-formed or generated from an alkyl, alkenyl, aryl, arylalkyl, heteroaryl, vinyl, or allyl halide compound and Mg⁰. When the boron-containing substrate is a boronic ester, the reactions generally proceed at room temperature without added base in about 1 to 3 hours to form a boronic ester compound. When the boron-containing substrate is a dialkylaminoborane compound, the reactions generally proceed to completion at 0° C. in about 1 hour to form a boronic acid compound.

The present invention is directed to a process for preparing epoxidized polymers. The process comprises reacting an unsaturated polymer with hydrogen peroxide in the presence of a polymer support having a sulfonic acid group. The present invention is also directed to an epoxidized halogenated-polymer which comprises repeating units derived from at least one isoolefin monomer and repeating units derived from at least one diolefinic monomer, and one or more allylic halide groups and one or more oxirane functional groups in the polymer backbone.

PCT No. PCT/JP97/01843 Sec. 371 Date Jan. 30, 1998 Sec. 102(e) Date Jan. 30, 1998 PCT Filed May 29, 1997 PCT Pub. No. WO97/45433 PCT Pub. Date Dec. 4, 1997There is disclosed a method of preparing benzyl metal compounds represented by general formula (2), comprising reacting a phenyl metal compound represented by general formula (1) with toluene, in the presence of a catalytic amount of amine. According to this method, benzyl metal compounds can be prepared at a high yield, and in an industrially advantageous manner. Further, there is also disclosed a method of preparing 4-phenyl-1-butenes, comprising reacting the benzyl metal compound obtained in the method, with an allyl halide. wherein M represents an alkali metal, wherein M has the same meaning as the above.

A process is described for isomerizing halogenated butyl rubber from a microstructure that is predominantly exo-methylene (secondary allylic halide) to one that is predominantly endo-halomethyl (primary allylic halide). Isomerized halobutyl rubber is a halobutyl rubber that is more reactive toward a wide range of nucleophiles, thereby supporting more efficient processes for producing a variety of butyl rubber derivatives. The process includes mixing halogenated butyl rubber and a catalytic amount of metal carboxylate and optionally heating to form isomerized halogenated butyl rubber, and may be conducted in the absence or presence of solvent.

The invention belongs to the technical field of synthesis of forest fine chemicals, and particularly discloses a Gemini type quaternary ammonium salt surfactant containing a natural terpene structure,a synthesis method and application thereof. The surfactant has a natural terpene structure and an allyl quaternary ammonium functional group, and has a structure shown as formula (I), wherein R1 is ahydrophobic group and is allyl containing the natural terpene structure; R2 is a bridging group, and is ethylene group, 1, 3-propylidene or 1, 4-butylidene; and X is chlorine or bromine. According tothe synthesis method of the Gemini type quaternary ammonium salt surfactant containing the natural terpene structure, allyl halide containing the natural terpene structure and binary tertiary amine are used as the raw materials, and a target product is prepared through quaternization reaction. The surfactant has strong surface activity, good hydrophilicity and bacteriostatic activity, can inhibitthe growth of bacteria, fungi and algae, and can be used as a bactericide and an algicide.