The present invention refers to a process for reacting an alkyl aryl ketone obtaining thereby the corresponding aryl oxirane or α-functionalized alkyl aryl ketal, the aryl oxirane or α-functionalized alkyl aryl ketal obtained by the process as well as the α-functionalized ketone obtained by the process.

The present invention refers to a process for reacting an alkyl aryl ketone obtaining thereby the corresponding aryl oxirane or α-functionalized alkyl aryl ketal, the aryl oxirane or α-functionalized alkyl aryl ketal obtained by the process as well as the α-functionalized ketone obtained by the process.

Adhesion promoters, Curable compositions containing the adhesion promoters, cured compositions that are formed from the curable compositions, and articles containing the cured compositions are provided. The adhesion promoter has at least one epoxide group and a plurality of hydrolyzable silyl groups. The curable compositions include an adhesion promoter, an epoxy resin, and a curing agent for the epoxy resin that has at least two amino groups that are primary and/or secondary amino groups.

The present disclosure relates to compounds of formula (V): ##STR00001##
wherein Ab represents an antibody. The disclosure also relates to cryptophycin payloads, as well as to cryptophycin conjugates, to compositions containing them and to their therapeutic use, especially as anticancer agents. The disclosure also relates to the process for preparing these conjugates.

Graphene fibers made from a graphene film formed into an elongated fiber-like shape and composite materials made from the graphene fibers. The graphene film has amine groups formed on at least an outer surface of the graphene film and epoxide groups formed on at least one edge of the graphene film. The amine groups are formed in a functionalized area on the outer surface of the graphene film that is within about 10 microns from the at least one edge of the graphene film, or the functionalized area may extend the entire width of the graphene film. The graphene film may also have holes formed through the graphene film. The elongated fiber-like shapes may be the graphene film in a rolled spiral orientation or the graphene film in a twisted formation.

Graphene fibers made from a graphene film formed into an elongated fiber-like shape and composite materials made from the graphene fibers. The graphene film has amine groups formed on at least an outer surface of the graphene film and epoxide groups formed on at least one edge of the graphene film. The amine groups are formed in a functionalized area on the outer surface of the graphene film that is within about 10 microns from the at least one edge of the graphene film, or the functionalized area may extend the entire width of the graphene film. The graphene film may also have holes formed through the graphene film. The elongated fiber-like shapes may be the graphene film in a rolled spiral orientation or the graphene film in a twisted formation.

The present invention discloses a biomass-based epoxy resin and preparation method thereof; under conditions of N,N-dimethylformamide as a catalyst, 2,5-furandicarboxylic acid and thionyl chloride are acylated to obtain 2,5-furan diformyl chloride; then it is dissolved with dichloromethane; under tertiary amine conditions an esterification reaction takes place, and bis(4-allyl-2-methoxyphenyl)furan-2,5-dicarboxylic acid ester is thus obtained; by means of meta-chloroperoxybenzoic acid, its unsaturated double bond is epoxidized to obtain a biomass-based epoxy resin. The process of the present invention is simple; the raw materials come from biomass 2,5-furandicarboxylic acid and eugenol; in comparison with bisphenol-A epoxy resin based on petroleum and coal resources, the raw materials are green and renewable, and are advantageous to reducing the consumption of renewable resources with regard to polymeric material. The obtained cured epoxy resin has excellent thermal properties and modulus, and has broad prospects for application.

The present invention discloses a biomass-based epoxy resin and preparation method thereof; under conditions of N,N-dimethylformamide as a catalyst, 2,5-furandicarboxylic acid and thionyl chloride are acylated to obtain 2,5-furan diformyl chloride; then it is dissolved with dichloromethane; under tertiary amine conditions an esterification reaction takes place, and bis(4-allyl-2-methoxyphenyl)furan-2,5-dicarboxylic acid ester is thus obtained; by means of meta-chloroperoxybenzoic acid, its unsaturated double bond is epoxidized to obtain a biomass-based epoxy resin. The process of the present invention is simple; the raw materials come from biomass 2,5-furandicarboxylic acid and eugenol; in comparison with bisphenol-A epoxy resin based on petroleum and coal resources, the raw materials are green and renewable, and are advantageous to reducing the consumption of renewable resources with regard to polymeric material. The obtained cured epoxy resin has excellent thermal properties and modulus, and has broad prospects for application.

A method of using biopolymer to synthesize titanium-containing silicon oxide material and applications includes mixing a titanium source, a silicon source, an acid source, a base source, a biopolymer and a solvent to form an aqueous solution, and letting the aqueous solution react to form a semi-product; performing aging, solid-liquid separation and drying of the semi-product to obtain a dried solid; and performing calcination or extraction of the dried solid to obtain a titanium-containing silicon oxide material with a high specific surface area. The present invention adopts a biopolymer as the templating agent, which makes the fabrication process of titanium-containing silicon oxide material more environment-friendly. After calcination or extraction, the product still has superior catalytic activity, able to catalyze epoxidation of olefins and favorable for the production of epoxide.

A method of reducing the amount propylene chlorohydrin produced in a reaction to make a hydroxypropylated/crosslinked starch comprising removing residual propylene oxide from alkaline slurry. The residual propylene oxide is removed by the dewatering the alkaline slurry or by washing the starch in slurry at a pH of around 10. The starch is then neutralized in an acid solution and recovered from the second slurry and may or may not be washed, depending on whether the slurry while at pH around 10 to make a hydroxypropylated/crosslinked starch having less than 1 ppm propylene chlorohydrin.