摘要:
A novel composition made of polyalkoxylated derivatives of trimethylolpropane and fatty alcohols, the composition lending itself to the preparation thereof and to the use thereof as a reversing agent for a reversible reverse latex.
摘要:
A novel composition made of polyalkoxylated derivatives of trimethylolpropane and fatty alcohols, the composition lending itself to the preparation thereof and to the use thereof as a reversing agent for a reversible reverse latex.
摘要:
Novel inverse latices comprising, as inverting agents, at least one compound of formula (I): R3—[O—CH2—CH(OH)—CH2]P—OH (I) in which R3 represents a linear or branched aliphatic radical comprising from 6 to 18 carbon atoms and p an integer greater than or equal to and less than or equal to 20; and cosmetic, dermocosmetic, dermopharmaceutical or pharmaceutical compositions comprising them.
摘要:
A composition and method for a linear or crosslinked cationic polyelectrolyte, involving copolymerization of at least one cationic monomer with at least one neutral monomer and at least one-nonionic surfactant monomer.
摘要:
A self-reversible invert latex having a crosslinked cationic polyelectrolyte, formed by the copolymerization of at least one cationic monomer with at least one neutral monomer and at least one nonionic surfactant monomer.
摘要:
Novel inverse latices based on fatty alcohol ethers of formula R1—O—R2 (I) in which R1 and R2 represent, independently from one another, a linear or branched alkyl radical comprising from 5 to 18 carbon atoms; and cosmetic, dermocosmetic, dermopharmaceutical or pharmaceutical compositions comprising them.
摘要:
A method for the treatment of rock formations which may or may not be underground and, more particularly, of oil or gas production wells, water-injection wells intended to flood hydrocarbon (oil or gas) reservoirs or gas mines or gas storage wells includes a step of injecting, into the rock formation or well, a microgel obtained by dilution in water of a self-invertible inverse latex or of a self-invertible inverse microlatex of a crosslinked polyelectrolyte, obtained by copolymerization, in the presence of a crosslinking agent of partially- or totally-salified free 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid, with at least one cationic monomer chosen from: 2,N,N,N-tetramethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride; N,N,N-trimethyl-3-[(1-oxo-2-propenyl)amino]propanammonium chloride; diallyldimethylammonium chloride; N,N,N-trimethyl-2-[(1-oxo-2-propenyl)]ethanammonium chloride; N,N,N-trimethyl-2-[(1-oxo-2-methyl-2-propenyl)]ethanammonium chloride; or N,N,N-trimethyl-3-[(1-oxo-2-methyl-2-propenyl)amino]propanammonium chloride; and with at least one neutral monomer chosen from: acrylamide; N,N-dimethylacrylamide; N-[2-hydroxy-1,1-bis(hydroxymethyl)-ethyl]propenamide; or 2-hydroxyethyl acrylate.
摘要:
Method for producing a comb-shaped copolymer whose skeleton is of an acrylamide, acrylic acid, acryloyl aminoethanol or dimethyl acrylamide type and on which poly(N-alkyl acrylamide) or poly(N,N-5 dialkyl acrylamide lateral segments are grafted, includes (a) producing a telomer poly(N-alkyl acrylamide) or poly(N,N-dialkyl acrylamide) of formula (I) H2N—R1-Z-{CH2—C(R2) [C(═O)N(R3) (R4)]—}n—H (I) 10 by reacting in water a compound of formula (II) CH2═C(R2)—C(═O)—N(R3) (R4) (II) with a chain limiting compound of formula (III) Z-R1—NH2; (b) isolating the telomer of formula (I) obtained at a stage (a); (c) reacting in water the telomer of formula (I) obtained at stage (b) with an acid chloride of formula (IV) CH2═C(R5)—C(═O)—C1 at a molar ratio (IV)/(III) equal to or less than 10 and equal to or greater than 1 so that a macro monomer of formula (V) 20 CH2═C(R5)—C(═O)NH—R1-Z-{CH2—C(R2) [C(═O)N(R3) (R4)]—}n—H (V) is obtained; (d) isolating the macro monomer of formula (V) obtained at stage (c); (e) copolymerizing in water the macro monomer of formula (V) isolated at stage (d) with a monomer selected from acrylamide, acrylic acid, acryloyl-aminoethanol or dimethyl-acrylamide and, if necessary, (f) purifying the thus obtained copolymer.
摘要:
Polyelectrolyte resulting from polymerization, for 100 mol %, of: a) a molar ratio ≧50% and ≦99% of monomer units originating from at least one cationic monomer; b) a molar ratio >1% and ≦50% of monomer units originating from at least one monomer including a fully or partially salified free weak acid function; c) optionally a molar ratio >0 mol % and ≦5 mol % of monomer units originating from at least one monomer of formula A-C(═O)—O—[(CH2—CH(R1)—O]n—R (I), where n is, independently, a number from 1 to 50, A is a monovalent unsaturated aliphatic radical having 2 to 6 carbon atoms, R1 is a hydrogen atom, a methyl radical, or an ethyl radical, and R is a linear or branched, saturated or unsaturated aliphatic hydrocarbon radical having 8 to 30 carbon atoms; and d) optionally a molar ratio >0% and ≦1% of a diethylene or polyethylene cross-linking monomer.
摘要:
Disclosed is a self-reversible reverse latex including: a) 25-80% by mass of a cross-linked anionic polyelectrolyte (P), resulting from the polymerisation, for 100 mole percent: i)—of a molar proportion 30% and 95% of monomeric units from at least one monomer including a free, partially- or totally-salified strong acid function; and ii)—of a molar proportion >0% and