The presently claimed invention relates to polyalkyleneimine-based polymers that are useful as dispersants and a process for the preparation thereof. The presently claimed invention is also directed to dispersants that are useful in solvent-based dispersion systems as well as in water-based dispersion systems.

The present invention relates to a process for preparing a dispersion (D°), comprising: (E1) a polymerization performed M in an aqueous medium in the presence of: ° at least a pre-polymer (pO) of formula (R.sup.11)X—Z.sup.11—C(═S)—Z.sup.12-[A]-R.sup.12, which is soluble in the aqueous medium ° at least one free-radical polymerization initiator; and ° at least one ethylenically unsaturated hydrophobic monomer (m) with a ratio m/pO of the mass of the monomers (m) to the quantity of pre-polymer (pO) preferably below 10 000 g/mol whereby a dispersion of copolymers is obtained, including polymers with a living character; (E2) a conversion of the terminal groups of the copolymers that deprive the copolymers of their living character. The invention also relates to the use of dispersion (D°) for forming dispersions of hydrophobic polymers (Dp), suitable e.g. in fabric conditioning compositions.

The present invention relates to a process for preparing a dispersion (D°), comprising: (E1) a polymerization performed M in an aqueous medium in the presence of: ° at least a pre-polymer (pO) of formula (R.sup.11)X—Z.sup.11—C(═S)—Z.sup.12-[A]-R.sup.12, which is soluble in the aqueous medium ° at least one free-radical polymerization initiator; and ° at least one ethylenically unsaturated hydrophobic monomer (m) with a ratio m/pO of the mass of the monomers (m) to the quantity of pre-polymer (pO) preferably below 10 000 g/mol whereby a dispersion of copolymers is obtained, including polymers with a living character; (E2) a conversion of the terminal groups of the copolymers that deprive the copolymers of their living character. The invention also relates to the use of dispersion (D°) for forming dispersions of hydrophobic polymers (Dp), suitable e.g. in fabric conditioning compositions.

The present invention relates to a dispersant composition comprising: a) at least one oligomeric acid A, which has i) at least one acidic group selected from COOH and PO.sub.3H.sub.2, and ii) at least one polyoxyalkylene-ether radical of the formula (I): R—(O-A).sub.xO-G-, where A is an C.sub.2-C.sub.4-alkan-1,2-diyl radical; X is an integer having a number average value in the range from 2 to 20; and R is hydrocarbon radical having from 1 to 30 carbon atoms; G is a chemical bond or a carbonyl group; and b) at least one polyamine B, which is selected from the group consisting of polyvinylamines, poly-C.sub.2-C.sub.3-alkyleneimines, modified poly-C.sub.2-C.sub.3-alkyleneimines, melamine compounds, modified melamine compounds, poly-(C.sub.2-C.sub.4-alkyleneether) amines, polyetheramine polyols, and modified polyetheramine polyols. The invention also relates to aqueous pigment compositions containing a dispersant composition as defined herein, a pigment component, selected from the group consisting of pigments and mixtures of at least one pigment and at least one filler, and an aqueous diluent.

The present invention relates to a dispersant composition comprising: a) at least one oligomeric acid A, which has i) at least one acidic group selected from COOH and PO.sub.3H.sub.2, and ii) at least one polyoxyalkylene-ether radical of the formula (I): R—(O-A).sub.xO-G-, where A is an C.sub.2-C.sub.4-alkan-1,2-diyl radical; X is an integer having a number average value in the range from 2 to 20; and R is hydrocarbon radical having from 1 to 30 carbon atoms; G is a chemical bond or a carbonyl group; and b) at least one polyamine B, which is selected from the group consisting of polyvinylamines, poly-C.sub.2-C.sub.3-alkyleneimines, modified poly-C.sub.2-C.sub.3-alkyleneimines, melamine compounds, modified melamine compounds, poly-(C.sub.2-C.sub.4-alkyleneether) amines, polyetheramine polyols, and modified polyetheramine polyols. The invention also relates to aqueous pigment compositions containing a dispersant composition as defined herein, a pigment component, selected from the group consisting of pigments and mixtures of at least one pigment and at least one filler, and an aqueous diluent.

A dispersion comprising a solid particulate component such as a pigment, a dispersing agent and one or more solvents is disclosed. The dispersing agent comprises a reaction product of (a) an epoxidised carboxylic acid ester; (b) a compound including at least one reactive alcohol and/or amino functional group; and (c) a derivatising agent. Such a dispersion shows excellent long-term stability. A method of producing such a dispersion having long-term stability, and a use of the dispersing agent to provide a dispersion having long-term stability are also described.

The present invention is a surfactant composition containing (a) a branched alkyl sulfosuccinate ester having a branched alkyl group with 9 or 10 carbons and (b) a surfactant [excluding (a)].

The invention provides dispersed inorganic mixed metal oxide pigment compositions in a hydrocarbon media utilizing a dispersant having polyisobutylene succinic anhydride structure reacted with a non-polymeric amino ether/alcohol to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to color ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the colored article is also described.

A liquid foam composition and a foam dispenser. The liquid foam composition includes a combination of water, a surfactant, and a emulsifier. The foam dispenser includes a container containing the liquid foam composition. The foam dispenser further includes a foam dispensing pump having mesh within a liquid passage, a closure securing the foam dispensing pump assembly within the container, and a nozzle operably connected to the foam dispensing pump and extending from the closure. The nozzle is fluidly connected to the liquid passage.

A method for manufacturing a tire rubber composition includes kneading a rubber component, a silane coupling agent and a silica having a BET specific surface area of 210 m.sup.2/g or more, adding a vulcanization accelerator to a first kneaded material including the rubber component, silane coupling agent and silica, kneading a first resulting mixture including the rubber component, silane coupling agent, silica and vulcanization accelerator such that a second kneaded material including the rubber component, silane coupling agent, silica and vulcanization accelerator is obtained, adding a vulcanization agent to the second kneaded material including the rubber component, silane coupling agent, silica and vulcanization accelerator, and kneading a second resulting mixture including the rubber component, silane coupling agent, silica, vulcanization accelerator and vulcanization agent. The first kneaded material has a pH of 6.5 or less, and the second kneaded material has a pH of 8.0 or more.