A resin composition for golf balls includes specific amounts of (A) polyurethane or polyurea and (B) an oxazoline group-containing acrylic polymer or an oxazoline group-containing styrene polymer. A golf ball having a core encased by a cover of one or more layers, wherein at least one cover layer is formed of this resin composition, exhibits a good adhesion between adjoining layers, enabling the ball to achieve a high scuff resistance without lowering the initial velocity of the ball.

A method is disclosed for dewatering of sludge from a pulp, paper or board making process, such as deinking sludge, including obtaining of an aqueous sludge including an aqueous phase and a fibre material suspended in the aqueous phase. The sludge is subjected to a pre-thickening step, where a first part of the aqueous phase is removed from the sludge and to a pressing step, where a second part of the aqueous phase is removed from the sludge, thereby obtaining a dry pressed sludge. Before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at most 1.5 meq/g, more preferably at most 1.1 meq/g, is added to the sludge.

An aqueous ink composition including: an aqueous medium and resin fine particles, in which a proportion of a high-boiling solvent occupied in the aqueous medium is 3% by mass or less, and a resin constituting the resin fine particle contains constitutional units represented by General Formula (1) or (2).

##STR00001##

In the formulae, R.sup.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A.sup.1 represents O, NH, or N(L.sup.2-Y.sup.2), and L.sup.1 and L.sup.2 each are represent a specific divalent group such as an alkylene group or the like.

Y.sup.1 and Y.sup.2 each represent OH, OR.sup.2, NH.sub.2, NR.sup.2H, NR.sup.2R.sup.3, SH, S(O).sub.2OM, or OP(O)(OM).sub.2. R.sup.2 and R.sup.3 each represent a specific substituent, and M represents a hydrogen atom, an alkali metal ion, or an ammonium ion.

An aqueous ink composition including: an aqueous medium and resin fine particles, in which a proportion of a high-boiling solvent occupied in the aqueous medium is 3% by mass or less, and a resin constituting the resin fine particle contains constitutional units represented by General Formula (1) or (2).

##STR00001##

In the formulae, R.sup.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A.sup.1 represents O, NH, or N(L.sup.2-Y.sup.2), and L.sup.1 and L.sup.2 each are represent a specific divalent group such as an alkylene group or the like.

Y.sup.1 and Y.sup.2 each represent OH, OR.sup.2, NH.sub.2, NR.sup.2H, NR.sup.2R.sup.3, SH, S(O).sub.2OM, or OP(O)(OM).sub.2. R.sup.2 and R.sup.3 each represent a specific substituent, and M represents a hydrogen atom, an alkali metal ion, or an ammonium ion.

Novel polymerizable ionic liquid compounds, and polymerizable compositions are described. The compositions comprise an acid functional monomer or acid-functional copolymer (or conjugate base thereof), and an imidazole compound (or conjugate acid thereof). The polymerizable compositions may be cast and cured to form a coating on a substrate, the coating capable of swelling on exposure to water so as to release from that substrate.

Novel polymerizable ionic liquid compounds, and polymerizable compositions are described. The compositions comprise an acid functional monomer or acid-functional copolymer (or conjugate base thereof), and an imidazole compound (or conjugate acid thereof). The polymerizable compositions may be cast and cured to form a coating on a substrate, the coating capable of swelling on exposure to water so as to release from that substrate.

The present disclosure is drawn to coating compositions. The coating composition can include from 60 wt % to 90 wt % water; from 5 wt % to 40 wt % polyethyleneimine; from 5 wt % to 40 wt % polyvinyl alcohol, polyethylene oxide-modified polyvinyl alcohol, or a mixture thereof; and from 0.5 wt % to 10 wt % cationic salt. The coating composition can have a viscosity ranging from 50 cps to 400 cps.

Described are silicone hydrogels with high levels of polyamides exhibiting an excellent balance of physical, mechanical, and biological properties. The silicone hydrogels are formed from a reactive monomer mixture comprising: a hydroxylalkyl (meth)acrylate monomer; hydroxyl-containing silicone components; and a polyamide, wherein the polyamide is present in an amount greater than 15 weight percent, based on the total weight of reactive components in the reactive monomer mixture.

An aqueous ink jet composition contains: C.I. Disperse Red 364; a material A which is at least one compound selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2), an ethylene oxide adduct of tristyrylphenol, a derivative of the ethylene oxide adduct of tristyrylphenol, a polyalkylene glycol, and a derivative of the polyalkylene glycol; and an anionic dispersant.

##STR00001##

An aqueous ink jet composition contains: C.I. Disperse Red 364; a material A which is at least one compound selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2), an ethylene oxide adduct of tristyrylphenol, a derivative of the ethylene oxide adduct of tristyrylphenol, a polyalkylene glycol, and a derivative of the polyalkylene glycol; and an anionic dispersant.

##STR00001##