Provided is an interlayer film for laminated glass which is excellent in sound insulation property and has improved sound insulation performance not only in a coincidence region but also in a mass-dominated region.

The interlayer film for laminated glass includes a sound insulating layer which is formed from a composition (A) containing at least one resin (a1) selected from a thermoplastic resin and a thermosetting resin, wherein a tan obtained when a dynamic viscoelasticity of a sheet, which is obtained by molding the composition (A) to have a thickness of 0.8 mm, is measured at a frequency of 0.3 Hz in a tension mode has a maximal value at a temperature T.sub.A ( C.), T.sub.A ( C.) is in a range of 50 to 50 C., and the tan at T.sub.A ( C.) is 2.5 or more.

Provided is an interlayer film for laminated glass which is excellent in sound insulation property and has improved sound insulation performance not only in a coincidence region but also in a mass-dominated region.

The interlayer film for laminated glass includes a sound insulating layer which is formed from a composition (A) containing at least one resin (a1) selected from a thermoplastic resin and a thermosetting resin, wherein a tan obtained when a dynamic viscoelasticity of a sheet, which is obtained by molding the composition (A) to have a thickness of 0.8 mm, is measured at a frequency of 0.3 Hz in a tension mode has a maximal value at a temperature T.sub.A ( C.), T.sub.A ( C.) is in a range of 50 to 50 C., and the tan at T.sub.A ( C.) is 2.5 or more.

The present invention aims to provide a composition for a secondary battery electrode which is excellent in dispersibility of an active material and adhesiveness, capable of preventing battery deterioration and failure due to moisture absorption, and capable of providing a high-capacity secondary battery. Provided is a composition for a secondary battery electrode, containing: an active material; a binder; and an organic solvent, the binder containing a polyvinyl acetal resin, the polyvinyl acetal resin having an electron-donating group that has an acid dissociation constant in water of less than 16 and an electron-withdrawing group, the polyvinyl acetal resin having a degree of polymerization of 250 to 800 and a hydroxy group content of 35 to 70 mol %.

The present invention aims to provide a composition for a secondary battery electrode which is excellent in dispersibility of an active material and adhesiveness, capable of preventing battery deterioration and failure due to moisture absorption, and capable of providing a high-capacity secondary battery. Provided is a composition for a secondary battery electrode, containing: an active material; a binder; and an organic solvent, the binder containing a polyvinyl acetal resin, the polyvinyl acetal resin having an electron-donating group that has an acid dissociation constant in water of less than 16 and an electron-withdrawing group, the polyvinyl acetal resin having a degree of polymerization of 250 to 800 and a hydroxy group content of 35 to 70 mol %.

The present invention relates to resin particles including a residue unit represented by the following general formula (1) and having a volume average particle diameter equal to or more than 5 m and equal to or less than 2000 m, and a method for producing thereof. Furthermore the present invention relates to a fluororesin comprising a residue unit represented by a general formula (1) and having a weight average molecular weight Mw in a range of 510.sup.4 to 310.sup.5, and a yellow index of a heat-melted molded product (thickness 3 mm) after 24 h at 280 C. of equal to or less than 6, and a method for producing thereof.

##STR00001##

In the formula (1), Rf.sub.1, Rf.sub.2, Rf.sub.3, and Rf.sub.4 are each independently one of the groups consisting of a fluorine atom, a linear perfluoroalkyl group having 1 to 7 carbon atoms, a branched perfluoroalkyl group having 3 to 7 carbon atoms, or a cyclic perfluoroalkyl group having 3 to 7 carbon atoms. The perfluoroalkyl group may have an ethereal oxygen atom. Further, Rf.sub.1, Rf.sub.2, Rf.sub.3, and Rf.sub.4 may be linked to one another to form a ring having 4 or more and 8 or less carbon atoms, and the ring may include an ethereal oxygen atom.

A fluororesin that includes a residue unit represented by formula (1), and a terminal group represented by formula (2); and a fluororesin that includes a residue unit represented by formula (1) and has a transmittance of 50% or more measured at an optical path length of 10 mm and a wavelength of 275 nm when dissolved in perfluorohexane to produce a 10 wt % perfluorohexane solution. In formula (1): Rf.sub.1, Rf.sub.2, Rf.sub.3, and Rf.sub.4 each independently represent one selected from the group consisting of fluorine atoms, C1-7 linear perfluoroalkyl groups, C3-7 branched perfluoroalkyl groups, or C3-7 cyclic perfluoroalkyl groups; the perfluoroalkyl groups may have an etheric oxygen atom; Rf.sub.1, Rf.sub.2, Rf.sub.3, and Rf.sub.4 may bond to each other to form a ring having 4 to 8 carbon atoms; and the ring may include an etheric oxygen atom. In formula (2), i is an integer of 3-20.

##STR00001##

##STR00002##

A dispersant includes a polyvinyl acetal-based resin having a degree of polymerization in a range from 100 to 200, an amount of hydroxyl groups in a range from 4 mol % to 40 mol %, an amount of acetal groups in a range from 40 mol % to 95 mol %, and an amount of acetyl groups in a range from 1 mol % to 20 mol %.

A dispersant includes a polyvinyl acetal-based resin having a degree of polymerization in a range from 100 to 200, an amount of hydroxyl groups in a range from 4 mol % to 40 mol %, an amount of acetal groups in a range from 40 mol % to 95 mol %, and an amount of acetyl groups in a range from 1 mol % to 20 mol %.

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.

A liquid composition comprising a polymer having pendant groups of the formula I: (I) Wherein X is either a bond or is a linking group having 1 to 8 carbons and optionally 1 to 4 heteroatoms selected from O, N and S; and n is 1 to 4. ##STR00001##