The present invention relates to a polymeric aromatic amide dispersant, and a composition containing a particulate solid, an aqueous or polar organic medium, and a polymeric aromatic amide dispersant having at least one tertiary amide linking group connecting through a carbonyl group of the amide to an aromatic ring having a residual carboxylic acidic group thereon. The invention further provides compositions for millbases, dispersions, coatings and inks.

The present invention relates to a polymeric aromatic amide dispersant, and a composition containing a particulate solid, an aqueous or polar organic medium, and a polymeric aromatic amide dispersant having at least one tertiary amide linking group connecting through a carbonyl group of the amide to an aromatic ring having a residual carboxylic acidic group thereon. The invention further provides compositions for millbases, dispersions, coatings and inks.

Improved emulsifier for synthetic-based mud, process for preparation, and drilling method. The emulsifier has the formula (II) wherein each R.sup.1 is a C.sub.4 to C.sub.30 alkyl; R.sup.2, R.sup.3, R.sup.5, and R.sup.6 are each independently selected from H, C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxyalkyl, and C.sub.1 to C.sub.4 hydroxyalkyl; n and m are independently integers from 1 to 10; and y is an integer from 1 to 5. It is prepared by reacting a polyalkyleneamine with a monocarboxylic acid to form a first reaction product, reacting the first reaction product with a dicarboxylic acid to form a second reaction product, and heat treating the second reaction product to form an isomer. The drilling fluid contains the emulsifier, an oleaginous phase, and a non-oleaginous phase, and during use is circulated in a wellbore.

Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier has at least 5 repeating units. Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier includes at least 3 repeating units selected from allylamine, polyaminopolyamide, N-alkyl acrylamides, (meth) acrylic acid, alkyleneamine reacted with a dicarboxylic acid, alpha-olefin-alt-maleic anhydride, styrene maleic anhydride, alkylene oxide, wherein one or more amine or acid group on the repeating unit is amidized.

Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier has at least 5 repeating units. Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier includes at least 3 repeating units selected from allylamine, polyaminopolyamide, N-alkyl acrylamides, (meth) acrylic acid, alkyleneamine reacted with a dicarboxylic acid, alpha-olefin-alt-maleic anhydride, styrene maleic anhydride, alkylene oxide, wherein one or more amine or acid group on the repeating unit is amidized.

Disclosed are a variety of amphoteric compounds containing a quaternary nitrogen group, a covalently bound counterion, and an ester or amide group. These amphoteric compounds can be advantageously prepared via a chemoenzymatic green process, and exhibit good surfactant properties.

Disclosed are a variety of amphoteric compounds containing a quaternary nitrogen group, a covalently bound counterion, and an ester or amide group. These amphoteric compounds can be advantageously prepared via a chemoenzymatic green process, and exhibit good surfactant properties.

A dispersant for chemical mechanical polishing that flattens a surface of at least one of an insulating layer and a wiring layer includes a block copolymer (P) having a polymer block A and B. The polymer block A has a structural unit derived from at least one monomer selected from the group consisting of an amide group-containing vinyl monomer and an ester group-containing vinyl monomer, and the polymer block B has a structural unit having an ionic functional group.

A dispersant for chemical mechanical polishing that flattens a surface of at least one of an insulating layer and a wiring layer includes a block copolymer (P) having a polymer block A and B. The polymer block A has a structural unit derived from at least one monomer selected from the group consisting of an amide group-containing vinyl monomer and an ester group-containing vinyl monomer, and the polymer block B has a structural unit having an ionic functional group.