The present disclosure provides an adhesive composition that contains a polyester resin (A), wherein the polyester resin (A) contains a structural unit derived from at least one compound (a1) selected from the group consisting of a dimer acid compound and a dimer diol, and a structural unit derived from an aromatic compound (a2).

The present disclosure provides an adhesive composition that contains a polyester resin (A), wherein the polyester resin (A) contains a structural unit derived from at least one compound (a1) selected from the group consisting of a dimer acid compound and a dimer diol, and a structural unit derived from an aromatic compound (a2).

The present invention is a resin composition, including: an addition polymerization resin α having a glass transition temperature of 150° C. or more; and a resin β having an aromatic dicarboxylic acid monomer unit A having a hydrophilic group and a dicarboxylic acid monomer unit B having no hydrophilic group. According to the present invention, a resin composition that can be easily removed with water while maintaining the heat resistance can be provided.

The present invention is a resin composition, including: an addition polymerization resin α having a glass transition temperature of 150° C. or more; and a resin β having an aromatic dicarboxylic acid monomer unit A having a hydrophilic group and a dicarboxylic acid monomer unit B having no hydrophilic group. According to the present invention, a resin composition that can be easily removed with water while maintaining the heat resistance can be provided.

The present invention relates to a maleimide resin composition including (A) at least one selected from the group consisting of a maleimide compound having two or more N-substituted maleimide groups and a derivative thereof; and (B) a modified conjugated diene polymer, the component (B) being one resulting from modification of (b1) a conjugated diene polymer having a vinyl group in the side chain with (b2) a maleimide compound having two or more N-substituted maleimide groups and also to a prepreg, a laminate, a resin film, a multilayer printed wiring board, and a semiconductor package, each using the foregoing maleimide resin composition.

The present invention relates to a maleimide resin composition including (A) at least one selected from the group consisting of a maleimide compound having two or more N-substituted maleimide groups and a derivative thereof; and (B) a modified conjugated diene polymer, the component (B) being one resulting from modification of (b1) a conjugated diene polymer having a vinyl group in the side chain with (b2) a maleimide compound having two or more N-substituted maleimide groups and also to a prepreg, a laminate, a resin film, a multilayer printed wiring board, and a semiconductor package, each using the foregoing maleimide resin composition.

A method for producing a rubber wet masterbatch, the method including: adding a rubber latex solution to a carbon black-containing slurry aqueous solution in which a carbon black is dispersed in water and mixing the solutions to produce a carbon black-containing rubber latex aqueous solution; coagulating the carbon black-containing rubber latex aqueous solution obtained to produce a carbon black-containing rubber coagulum; cleaning the carbon black-containing rubber coagulum obtained to produce a cleaned carbon black-containing rubber coagulum; and dehydrating and drying the cleaned carbon black-containing rubber coagulum obtained to produce a rubber wet masterbatch, wherein an amount of an acetone extract from the cleaned carbon black-containing rubber coagulum is 2% by mass or less after drying the coagulum at 23° C. for 24 hours and further at 90° C. for 2 hours. Vulcanized rubber having excellent low exothermicity and excellent abrasion resistance can be obtained by the method.

A method for producing a rubber wet masterbatch, the method including: adding a rubber latex solution to a carbon black-containing slurry aqueous solution in which a carbon black is dispersed in water and mixing the solutions to produce a carbon black-containing rubber latex aqueous solution; coagulating the carbon black-containing rubber latex aqueous solution obtained to produce a carbon black-containing rubber coagulum; cleaning the carbon black-containing rubber coagulum obtained to produce a cleaned carbon black-containing rubber coagulum; and dehydrating and drying the cleaned carbon black-containing rubber coagulum obtained to produce a rubber wet masterbatch, wherein an amount of an acetone extract from the cleaned carbon black-containing rubber coagulum is 2% by mass or less after drying the coagulum at 23° C. for 24 hours and further at 90° C. for 2 hours. Vulcanized rubber having excellent low exothermicity and excellent abrasion resistance can be obtained by the method.

The triarylamine compound is represented by the following general formula (1), and the material, the optical element, and the optical apparatus each include a polymerized product (cured product) of the triarylamine compound. ##STR00001##
(In the general formula (1), R.sup.1 and R.sup.2 are each independently selected from a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and a substituted or unsubstituted alkylene group having 1 to 8 carbon atoms, the alkylene group having a polymerizable functional group, and R.sup.3 to R.sup.12 are each independently selected from a hydrogen atom, a cyano group, a trifluoromethyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkylene group having a polymerizable functional group, and a polymerizable functional group, provided that at least one of R.sup.3 to R.sup.12 represents an electron-withdrawing group, and at least one of R.sup.1 to R.sup.12 has a polymerizable functional group.)

The triarylamine compound is represented by the following general formula (1), and the material, the optical element, and the optical apparatus each include a polymerized product (cured product) of the triarylamine compound. ##STR00001##
(In the general formula (1), R.sup.1 and R.sup.2 are each independently selected from a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and a substituted or unsubstituted alkylene group having 1 to 8 carbon atoms, the alkylene group having a polymerizable functional group, and R.sup.3 to R.sup.12 are each independently selected from a hydrogen atom, a cyano group, a trifluoromethyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkylene group having a polymerizable functional group, and a polymerizable functional group, provided that at least one of R.sup.3 to R.sup.12 represents an electron-withdrawing group, and at least one of R.sup.1 to R.sup.12 has a polymerizable functional group.)