A modified polyolefin resin may be capable of obtaining an intended adhesion strength regardless of a kind of a base resin thereof even when graft modification is carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. Such a modified polyolefin resin may be a modified product of a polyolefin resin and satisfying (A) and (B): (A): a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; and (B): a ring-opening degree expressed by formula (1) is 40 or more:
ring-opening degree=modification degree K?ring-opening rate R(1),
wherein, in formula (1), the modification degree K is a grafting weight (% by weight) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.

A resin dispersion having, dispersed in water with a 50% particle diamter of at most 0.5 m, a polymer (C) having a hydrophilic polymer (B) or an acidic group bonded to a propylene/-olefin copolymer (A) as a copolymer of propylene with an -olefin other than propylene, where the copolymer (A) has a propylene content of at least 50 mol% and less than 100 mol% and the copolymer (A) has a weight average molecular weight Mw of at least 10,000 and a molecular weight distribution Mw/Mn of at most 3.5, and the resin dispersion has a surfactant content of at most 15 parts by weight per 100 parts by weight of the polymer (C).

A resin dispersion having, dispersed in water with a 50% particle diamter of at most 0.5 m, a polymer (C) having a hydrophilic polymer (B) or an acidic group bonded to a propylene/-olefin copolymer (A) as a copolymer of propylene with an -olefin other than propylene, where the copolymer (A) has a propylene content of at least 50 mol% and less than 100 mol% and the copolymer (A) has a weight average molecular weight Mw of at least 10,000 and a molecular weight distribution Mw/Mn of at most 3.5, and the resin dispersion has a surfactant content of at most 15 parts by weight per 100 parts by weight of the polymer (C).

Provided is a polyfunctional vinyl aromatic copolymer having reactivity and solubility that can be used for manufacturing a copolymer rubber and a copolymer rubber material having processability, strength and homogeneity obtained therefrom. The polyfunctional vinyl aromatic copolymer includes: 0.5 mol % or more and 40 mol % or less of a structural unit (a) derived from a divinyl aromatic compound and 60 mol % or more and 99.5 mol % or less of a structural unit (b) derived from a monovinyl aromatic compound, in which at least some of the structural units (a) are a crosslinked structural unit (a2) represented by the following Formula (2) and a vinyl-group-containing structural unit (a1) represented by the following Formula (1): ##STR00001##
in the formulas, R.sup.1's independently represent an aromatic hydrocarbon group having 6 to 30 carbon atoms.

Provided is a polyfunctional vinyl aromatic copolymer having reactivity and solubility that can be used for manufacturing a copolymer rubber and a copolymer rubber material having processability, strength and homogeneity obtained therefrom. The polyfunctional vinyl aromatic copolymer includes: 0.5 mol % or more and 40 mol % or less of a structural unit (a) derived from a divinyl aromatic compound and 60 mol % or more and 99.5 mol % or less of a structural unit (b) derived from a monovinyl aromatic compound, in which at least some of the structural units (a) are a crosslinked structural unit (a2) represented by the following Formula (2) and a vinyl-group-containing structural unit (a1) represented by the following Formula (1): ##STR00001##
in the formulas, R.sup.1's independently represent an aromatic hydrocarbon group having 6 to 30 carbon atoms.

Provided is a polyfunctional vinyl aromatic copolymer having reactivity and solubility that can be used for manufacturing a copolymer rubber and a copolymer rubber material having processability, strength and homogeneity obtained therefrom. The polyfunctional vinyl aromatic copolymer includes: 0.5 mol % or more and 40 mol % or less of a structural unit (a) derived from a divinyl aromatic compound and 60 mol % or more and 99.5 mol % or less of a structural unit (b) derived from a monovinyl aromatic compound, in which at least some of the structural units (a) are a crosslinked structural unit (a2) represented by the following Formula (2) and a vinyl-group-containing structural unit (a1) represented by the following Formula (1): ##STR00001##
in the formulas, R.sup.1's independently represent an aromatic hydrocarbon group having 6 to 30 carbon atoms.

The present disclosure relates to methods for the hydroaminoalkylation of an olefin. Such methods can comprise reacting the olefin with a secondary amine in the presence of a catalyst of Formula (I). The present disclosure also relates to catalysts which can be useful in such methods. L.sub.xM(R.sub.1).sub.y(I)

The present disclosure relates to methods for the hydroaminoalkylation of an olefin. Such methods can comprise reacting the olefin with a secondary amine in the presence of a catalyst of Formula (I). The present disclosure also relates to catalysts which can be useful in such methods. L.sub.xM(R.sub.1).sub.y(I)

The purpose of the present invention is to provide a polar-group-containing propylene-type wax having excellent properties including a low melting point. A modified propylene-(-olefin) copolymer (A) according to the present invention is produced by grafting at least one compound selected from an unsaturated carboxylic acid, a derivative of the unsaturated carboxylic acid and an unsaturated sulfonic acid salt onto a propylene-(-olefin) copolymer (A1) and has an acid value of 1 to 100 KOHmg/g, wherein the propylene-(-olefin) copolymer (A1) comprises 60 to 95 mol % of a propylene-derived constituent unit (a) and 5 to 40 mol % of a constituent unit (b) derived from an -olefin having 4 or more carbon atoms, and satisfies the specific requirements (i) to (iii).

The purpose of the present invention is to provide a polar-group-containing propylene-type wax having excellent properties including a low melting point. A modified propylene-(-olefin) copolymer (A) according to the present invention is produced by grafting at least one compound selected from an unsaturated carboxylic acid, a derivative of the unsaturated carboxylic acid and an unsaturated sulfonic acid salt onto a propylene-(-olefin) copolymer (A1) and has an acid value of 1 to 100 KOHmg/g, wherein the propylene-(-olefin) copolymer (A1) comprises 60 to 95 mol % of a propylene-derived constituent unit (a) and 5 to 40 mol % of a constituent unit (b) derived from an -olefin having 4 or more carbon atoms, and satisfies the specific requirements (i) to (iii).