The present invention aims to provide a polyvinyl acetal resin composition that is moldable by an extrusion method and capable of exhibiting excellent heat resistance after molding, an adhesive sheet containing the polyvinyl acetal resin composition, and a method for producing the adhesive sheet. The present invention relates to a polyvinyl acetal resin composition including: a polyvinyl acetal; a reactive diluent; and a photopolymerization initiator, the polyvinyl acetal resin composition having a storage modulus G at 200 C. before irradiation with light of 810.sup.4 Pa or lower and a storage modulus G at 200 C. after irradiation with light of 810.sup.3 Pa or higher, with the storage modulus G at 200 C. after irradiation with light being higher than the storage modulus G at 200 C. before irradiation with light.

The present invention aims to provide a polyvinyl acetal resin composition that is moldable by an extrusion method and capable of exhibiting excellent heat resistance after molding, an adhesive sheet containing the polyvinyl acetal resin composition, and a method for producing the adhesive sheet. The present invention relates to a polyvinyl acetal resin composition including: a polyvinyl acetal; a reactive diluent; and a photopolymerization initiator, the polyvinyl acetal resin composition having a storage modulus G at 200 C. before irradiation with light of 810.sup.4 Pa or lower and a storage modulus G at 200 C. after irradiation with light of 810.sup.3 Pa or higher, with the storage modulus G at 200 C. after irradiation with light being higher than the storage modulus G at 200 C. before irradiation with light.

Compositions of the present disclosure comprise electrostatic dissipative compositions comprising a first polymer, a second polymer, and a naphthyl sulfonic acid. Methods of the present disclosure comprise heating a vehicle component by applying a voltage to a surface of a composition disposed on a vehicle component. The composition comprises a first polymer and a second polymer.

Monomers, polymers and copolymers are provided that incorporate at least one naturally occurring phenolic compound, such as a plant phenol.

An interlayer for a laminated glass is provided. The interlayer film contains (a) a polyvinyl acetal with an acetalization degree of 60 to 80 mol %, a content of a vinyl ester monomer unit of from 0.1 to 20 mol %, and a viscosity-average degree of polymerization of from 1400 to 4000, and (b) light-diffusing fine particles in which an absolute value difference between a refractive index of the light-diffusing fine particles and a refractive index of the intrlayer excluding the light-diffusing fine particles is 0.20 or more and a haze as measured in accordance with JIS K 7105 for a laminated glass prepared by sandwiching the interlayer film between two glass sheets with a thickness of 3 mm is 20% or less.

An interlayer for a laminated glass is provided. The interlayer film contains (a) a polyvinyl acetal with an acetalization degree of 60 to 80 mol %, a content of a vinyl ester monomer unit of from 0.1 to 20 mol %, and a viscosity-average degree of polymerization of from 1400 to 4000, and (b) light-diffusing fine particles in which an absolute value difference between a refractive index of the light-diffusing fine particles and a refractive index of the intrlayer excluding the light-diffusing fine particles is 0.20 or more and a haze as measured in accordance with JIS K 7105 for a laminated glass prepared by sandwiching the interlayer film between two glass sheets with a thickness of 3 mm is 20% or less.

Monomers, polymers and copolymers are provided that incorporate at least one naturally occurring phenolic compound, such as a plant phenol.

The present invention provides a polyvinyl acetal resin which leaves less fine undissolved matter when dissolved in an organic solvent and thus can improve productivity particularly when used as a binder for a ceramic green sheet, and which can also provide a ceramic green sheet having excellent toughness and enables production of a highly reliable multilayer ceramic capacitor. Provided is a polyvinyl acetal resin having: a wavenumber A (cm.sup.1) of a peak within a range of 3,100 to 3,700 cm.sup.1 in an IR absorption spectrum measured using an infrared spectrophotometer; and a hydroxy group content (mol %), the wavenumber A of the peak and the hydroxy group content satisfying relations of the following formulas (1) and (2):
[(3,470A)/Hydroxy group content]5.5(1)
(3,470A)185(2)
wherein A is a wavenumber which is lower than 3,470 cm.sup.1 and at which a transmittance a (%) satisfying [100(100X)/2] is exhibited, where X (%) is a minimum transmittance of the peak within the wavenumber range of 3,100 to 3,700 cm.sup.1.

The present invention provides a polyvinyl acetal resin which leaves less fine undissolved matter when dissolved in an organic solvent and thus can improve productivity particularly when used as a binder for a ceramic green sheet, and which can also provide a ceramic green sheet having excellent toughness and enables production of a highly reliable multilayer ceramic capacitor. Provided is a polyvinyl acetal resin having: a wavenumber A (cm.sup.1) of a peak within a range of 3,100 to 3,700 cm.sup.1 in an IR absorption spectrum measured using an infrared spectrophotometer; and a hydroxy group content (mol %), the wavenumber A of the peak and the hydroxy group content satisfying relations of the following formulas (1) and (2):
[(3,470A)/Hydroxy group content]5.5(1)
(3,470A)185(2)
wherein A is a wavenumber which is lower than 3,470 cm.sup.1 and at which a transmittance a (%) satisfying [100(100X)/2] is exhibited, where X (%) is a minimum transmittance of the peak within the wavenumber range of 3,100 to 3,700 cm.sup.1.

The interlayer adhesive of the present invention consists of a resin layer that comprises a polyvinyl acetal resin, and a content of alkali metal and alkaline earth metal contained in the resin layer is 15 ppm or less. According to the present invention, an interlayer adhesive comprising a polyvinyl acetal resin and capable of suppressing whitening can be provided.