A curable epoxy composition comprising a polyvalent epoxy compound (A) having a biphenyl structure and/or condensed polycyclic structure, a phosphorus-containing epoxy compound (B) having a structure shown by the following formula (1) or (2), and a triazine structure-containing phenol resin (C) and a film, laminated film, prepreg, laminate, cured article, and composite article obtained using the same are provided.

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Where, in the formula (1), each of R.sup.1 and R.sup.2 respectively independently represents a hydrocarbon group having 1 to 6 carbon atoms, the pluralities of R.sup.1 and R.sup.2 may be the same or different, and each of “m” and “n” respectively independently represents an integer of 0 to 4, and where, in the formula (2), each of R.sup.1 and R.sup.2 respectively independently represents a hydrocarbon group having 1 to 6 carbon atoms, the pluralities of R.sup.1 and R.sup.2 may be the same or different, and each of “m” and “n” respectively independently represents an integer of 0 to 5.

A preparation method for an emulsifier, an emulsifier, an aqueous epoxy resin dispersion, and a formulation method. The preparation method for an emulsifier comprises reacting aminosulfonic acid and/or a sulfamate as a first reaction raw material with an epoxy resin in the presence of water, so as to obtain an ionic active emulsifier. The ionic active emulsifier molecule comprises at least one epoxy group from an epoxy resin and at least one sulfonic acid or sulfonate group from the first reaction raw material. The aqueous epoxy resin dispersion prepared by using the emulsifier has the characteristics of good stability and good corrosion resistance after curing, and can be used in the fields of coatings, adhesives, etc.

A preparation method for an emulsifier, an emulsifier, an aqueous epoxy resin dispersion, and a formulation method. The preparation method for an emulsifier comprises reacting aminosulfonic acid and/or a sulfamate as a first reaction raw material with an epoxy resin in the presence of water, so as to obtain an ionic active emulsifier. The ionic active emulsifier molecule comprises at least one epoxy group from an epoxy resin and at least one sulfonic acid or sulfonate group from the first reaction raw material. The aqueous epoxy resin dispersion prepared by using the emulsifier has the characteristics of good stability and good corrosion resistance after curing, and can be used in the fields of coatings, adhesives, etc.

The present invention provides a polymerizable compound that reduces, for example, the likelihood of crystals precipitating in a polymerizable composition including the polymerizable compound and enables the polymerizable composition to have high preservation stability and a polymerizable composition including the polymerizable compound which reduces the likelihood of inconsistencies being formed in a film-like polymer produced by polymerizing the polymerizable composition. Also provided are a polymer-produced by polymerizing the polymerizable composition and an optically anisotropic body including the polymer. The present invention provides the compound represented by General Formula (I), a composition including the compound, a polymer produced by polymerizing the composition, and an optically anisotropic body including the polymer.

The present technology provides an epoxy resin composition for a fiber-reinforced composite material, a method for producing an epoxy resin composition for a fiber-reinforced composite material, a prepreg, and a honeycomb panel. The epoxy resin composition for a fiber-reinforced composite material of the present technology contains: a reaction product obtained by reacting 100 parts by mass of a phosphorus-containing epoxy resin containing a phosphorus atom in the backbone thereof, and not less than 5 parts by mass and not greater than 20 parts by mass of an amino-terminated butadiene-acrylonitrile rubber; an epoxy resin other than the phosphorus-containing epoxy resin; a curing agent; and a curing accelerator.

A curable composition includes a condensation product having a weight average molecular weight of 30,000 or less and a curing agent, the condensation product being obtained by hydrolysis and condensation of a first and secondsilane compound in the presence of a neutral salt catalyst. The condensation product also has a ratio Y/X of 0.2 or less, wherein X is the number of moles of an OR.sup.3 group directly bonded to silicon atoms of the first and second silane compounds, and Y is the number of moles of an OR.sup.3 group directly bonded to a silicon atom of the condensation product. The first silane compound is represented by R.sup.1—(SiR.sup.2.sub.a(OR.sup.3).sub.3-a), and the second silane compound is represented by R.sup.4—(SiR.sup.2.sub.a(OR.sup.3).sub.3-a).

A resin composition including at least (A) an epoxy resin, (B) a curing agent and (C) an inorganic filler, satisfies the following conditions: (I-I) the minimum modulus is no greater than 10.sup.4 MPa when evaluated at a set temperature of 200° C. after temperature increase from room temperature to 200° C. at 50° C./min by evaluation with a rheometer, and the final modulus is 10.sup.5 MPa or greater from 10 minutes after the initial temperature increase; (I-II) the softening point of the epoxy resin (A) is 35° C. or higher; (I-III) the residual solvent in the resin composition is no greater than 0.1%; and (I-IV) the equivalent value of the curing agent (B) is no greater than 90 g/eq and the softening point is 105° C. or higher.

Grafted triglycerides comprising a triglyceride grafted with a fatty acid residue containing 4 to 30 carbon atoms are reacted with an epoxide resin and an amine curing agent to yield an epoxy thermoset. The grafted triglyceride is prepared by reaction of an epoxidized triglyceride with a fatty acid. By varying the length of the fatty residue, the number of fatty residues per triglyceride, the identity of the epoxy resin and the amine curing agent, it is possible to prepare epoxy thermosets that exhibit superior physical properties compared to the properties of epoxy thermosets prepared without the grafted triglyceride, or as compared to epoxy thermosets wherein the epoxidized triglyceride is used in place of the grafted triglyceride.

A chemical structure, and a process for synthesizing the chemical structure, of:

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Provided are an alkoxysilylated epoxy compound, a composite of which exhibits good heat resistance properties, particularly low CTE and increased glass transition temperature, and a cured product thereof exhibits good flame retardancy and composition of which does not require additional silane coupling agent, a method for preparing the same and a composition and a cured product including the same. An alkoxysilylated epoxy compound including at least one alkoxysilyl group and at least two epoxy groups, a method for preparing the same by epoxide ring-opening reaction of starting material and alkoxysilylation, an epoxy composition including the epoxy compound, and a cured product and a use of the composition are provided. Since chemical bonds may be formed between alkoxysilyl group and filler and between alkoxysilyl groups, chemical bonding efficiency of the composite may be improved. Thus, the composite exhibits good heat resistance properties and the cured product exhibits good flame retardancy.