The present invention pertains to: a p-boronophenylalanine derivative that comprises a polymer to which a group represented by formula (I) is linked directly or via a linker; a composition containing same; and a kit for producing said derivative and composition.

The present invention pertains to: a p-boronophenylalanine derivative that comprises a polymer to which a group represented by formula (I) is linked directly or via a linker; a composition containing same; and a kit for producing said derivative and composition.

Provided are: a radical polymerization initiator which has excellent sensitivity and solubility in water; a composition containing the same; a cured product of the composition; a method of producing the cured product; and a compound. The radical polymerization initiator contains a compound represented by Formula (A) below (wherein Z.sup.1 represents a direct bond or the like; Z.sup.2 represents —C(R.sup.102).sub.2— or the like; R.sup.1 to R.sup.8 each represent a hydrogen atom or the like, or a group containing a salt-forming group, which is represented by Formula (B1) below (wherein L.sub.1 represents a direct bond or the like, B represents an acidic group salt or the like, b represents 1 to 10, and the asterisk (*) represents a binding site), at least one of R.sup.1 to R.sup.8 is the group containing a salt-forming group; R.sup.101 and the like each represent a hydrogen atom or the like; one or more hydrogen atoms in the alkyl group and the like used as R.sup.1 to R.sup.8 and the like are optionally substituted with an ethylenically unsaturated group or the like; one or more methylene groups in R.sup.1 to R.sup.8 and the like are optionally substituted with a double bond or the like; adjacent groups such as R.sup.1 and R.sup.2 are optionally bound together to, form a ring and optionally form a fused ring with a benzene ring in Formula (A); and represents a hydrogen atom or the like). ##STR00001##

Provided are: a radical polymerization initiator which has excellent sensitivity and solubility in water; a composition containing the same; a cured product of the composition; a method of producing the cured product; and a compound. The radical polymerization initiator contains a compound represented by Formula (A) below (wherein Z.sup.1 represents a direct bond or the like; Z.sup.2 represents —C(R.sup.102).sub.2— or the like; R.sup.1 to R.sup.8 each represent a hydrogen atom or the like, or a group containing a salt-forming group, which is represented by Formula (B1) below (wherein L.sub.1 represents a direct bond or the like, B represents an acidic group salt or the like, b represents 1 to 10, and the asterisk (*) represents a binding site), at least one of R.sup.1 to R.sup.8 is the group containing a salt-forming group; R.sup.101 and the like each represent a hydrogen atom or the like; one or more hydrogen atoms in the alkyl group and the like used as R.sup.1 to R.sup.8 and the like are optionally substituted with an ethylenically unsaturated group or the like; one or more methylene groups in R.sup.1 to R.sup.8 and the like are optionally substituted with a double bond or the like; adjacent groups such as R.sup.1 and R.sup.2 are optionally bound together to, form a ring and optionally form a fused ring with a benzene ring in Formula (A); and represents a hydrogen atom or the like). ##STR00001##

A poly(vinyl acetal) composition, such as a poly(vinyl butyral) composition or resin, can be made containing recycle content by the use of a recycle content aldehyde composition as a feedstock to make the PVA or by application of a recycle allotment, such as an allocation or credit, applied to either the aldehyde composition or to the PVA composition. The recycle content is obtained by cracking a recycle content pyrolysis oil to make a variety of olefins, such as propylene or ethylene.

A poly(vinyl acetal) composition, such as a poly(vinyl butyral) composition or resin, can be made containing recycle content by the use of a recycle content aldehyde composition as a feedstock to make the PVA or by application of a recycle allotment, such as an allocation or credit, applied to either the aldehyde composition or to the PVA composition. The recycle content is obtained by cracking a recycle content pyrolysis oil to make a variety of olefins, such as propylene or ethylene.

A method for producing a polyvinyl alcohol resin having an absorbance of not less than 0.2 at 280 nm, which includes: melt-kneading a polyvinyl alcohol resin material; extruding the resulting melt-kneaded polyvinyl alcohol resin into a sheet; cooling the resulting polyvinyl alcohol resin sheet; and pulverizing the cooled polyvinyl alcohol resin sheet. The method ensures a higher productivity and an excellent long-run property.

A method for producing a polyvinyl alcohol resin having an absorbance of not less than 0.2 at 280 nm, which includes: melt-kneading a polyvinyl alcohol resin material; extruding the resulting melt-kneaded polyvinyl alcohol resin into a sheet; cooling the resulting polyvinyl alcohol resin sheet; and pulverizing the cooled polyvinyl alcohol resin sheet. The method ensures a higher productivity and an excellent long-run property.

Compositions that include a polymer and an aldaric acid, such as glucaric acid, are disclosed. The compositions may include polyvinyl alcohol and glucaric acid. The compositions may also include polyacrylonitrile and glucaric acid. In addition, the compositions may further include lignin. Also disclosed are fibers including the compositions, methods of making the fibers, and uses of the fibers.

Compositions that include a polymer and an aldaric acid, such as glucaric acid, are disclosed. The compositions may include polyvinyl alcohol and glucaric acid. The compositions may also include polyacrylonitrile and glucaric acid. In addition, the compositions may further include lignin. Also disclosed are fibers including the compositions, methods of making the fibers, and uses of the fibers.