Abstract: A comb copolymer having a backbone of 2-acrylamido-2-methylpropanesulfonic acid or a derivative thereof, with grafted lateral side segments of poly(N-alkylacrylamide) or poly(N,N-dialkylacrylamide), is provided. A process for the preparation of the comb copolymer includes reacting a compound of formula (II) with a compound of formula (III) in a (tert-butanol)-water mixture, to obtain a poly(N-alkylacrylamide) or poly(N,N-dialkylacrylamide) telomere of formula (I); reacting in tert-butanol the telomer of formula (I) with an acid chloride of formula (IV) to obtain a solution of the macromonomer of formula (V); and copolymerising in tert-butanol the macromonomer of formula (V) with an ammonium salt of 2-acrylamido-2-methylpropanesulfonic acid.

Abstract: A cross-linked anionic polyelectrolyte resulting from the polymerization, for 100 mol %: (i) of a proportion no smaller than 30 mol % and smaller than 99.5 mol % monomer units from a monomer having a partially or totally salified strong acid function; (ii) of a proportion no smaller than 0.5 mol % and no greater than 5 mol % monomer units from at least one monomer having Formula (I): CH2?CH(CH3)—C(=0)-OR1 (I), wherein Ri is an alkyl radical including 6 to 18 carbon atoms; (iii) of a proportion greater than 0 mol % and no greater than 5 mol % monomer units from at least one diethylene or polyethylene cross-linking monomer; and (iv) optionally, of a proportion smaller than 69.5 mol % monomer units from a neutral monomer. Also, a method for preparing the polyelectrolyte and to the use thereof as a thickener in topical compositions.

Abstract: A linear, branched or cross-linked anionic polyelectrolyte, resulting from the polymerisation, for 100 molar percentage: a) 50% to 99% of monomeric units including a strong, free and partially or completely salified acid function ; b) 1% to 50% of a monomeric units of formula (I): CH2?CH(R1)-C(?O)—O—(CH2)n-CF3 (I), wherein R1 represents H or CH3, and n is 1, 2 or 3; c) optionally greater than 0% to 5% of monomeric units of formula (II): R2-C(?O)—O—[(CH2-CH(R4)-O]m-R3 (II), wherein m is 0 to 50, R2 represents an unsaturated aliphatic monovalent radical with 2 to 4 carbon atoms, R4 represents H, CH3 or CH3CH2 and R3 represents a linear or branched, saturated or unsaturated hydrocarbon aliphatic radical with 8 to 30 carbon atoms, and d) optionally greater than 0% to 5% of at least one monomer with diethylenic or polyethylenic cross-linking. The use thereof as a thickener in topical compositions.

Abstract: An anionic polyelectrolyte resulting from the polymerization, for 100% by mass of: a) a mass ratio ?70% and ?98.5% of monomeric units from a monomer with a strong acid function; b) a mass ratio ?0.5% and ?10%, —either of a monomer of formula (1a) : R—(CH2)3-Si(CH2)2-[0-Si(CH3)2-]nO—Si(CH3)2—(CH2)3—R (1a), wherein R represents the monovalent radical: -(0-CH2-CH2-)x[0-CH2—CH(CH3)-]yO—C(?0)-CH?CH2;—or (Ib): Si(CH3)3-[0-Si(CH3)2-]m[0-Si(CH3)[(CH2)3—R]—]pO—Si(CH2)3 (Ib), c) a mass ratio ?1% and ?20% of a monomer of formula (II) : CH2?CH(R1)-C(?0)-0-(CH2)n-CF3 (II), formula (I) wherein radical Ri represents a hydrogen atom or a methyl radical, and n is equal to 1, 2 or 3; d) optionally a mass ratio >0% and ?5% of monomeric units from a monomer of formula (III): R2—C(?0)-0-[(CH2—CH(R4)-0]m-R3 (III), e) optionally a mass ratio >0% and ?5% of a cross-linking monomer, method for its preparation and use as a thickener in topical compositions.

Abstract: A straight, branched or cross-linked polymer, including, per 100 mol %: a) a mole fraction from 75% to 99.95% of monomer units from an N,N-dialkyl acrylamide; b) a mole fraction from 0.05% to 1% of monomer units from a monomer of formula (I): CH2=C(Ri)-C(=0)-0-[(CH2-CH(R2)-0]n-R3 (I); c) optionally a mole fraction higher than 0% to 24% either of monomer units from a monomer including a free strong acid function, partially or totally salified, or of monomer units from a monomer of formula (II): CH2=C(R4)-C(=0)-Y-(CH2)m-N(R5)(R6) (II); d) optionally a mole fraction higher than 0% to 1% of a diethylene or polyethylene cross-linking monomer. Also, a method for treating a surface made of a hydrophobic material, using the polymer, and an aqueous, hydro-organic or organic solution including the polymer for modifying interactions between the species contained the solution and the hydrophobic surface.

Abstract: A copolymer that includes for 100 mol %: a) more than 70 mol % and up to 99.9 mol % of hydrophobic monomer units (A) from stearyl methacrylate; and b) 0.1 mol % to 30 mol % of monomer units (B) from at least one monomer of a compound of formula (I) where R1 is a linear or branched alkyl radical comprising 12 to 22 carbon atoms, R2 is a hydrogen atom or a methyl radical, and n is an integer greater than or equal to 0 and lower than or equal to 30, wherein it is understood that said compound of formula (I) is not stearyl methacrylate. The invention also relates to a method for preparing and using same as a modifier of the rheology of the oil phase of a topical cosmetic, dermopharmaceutical, or pharmaceutical composition.

Abstract: An anionic polyelectrolyte resulting from the polymerization: a) of a mass ratio greater than or equal to 80% and less than or equal to 99.5% of monomeric units from a monomer with a weak acid function; b) of a mass ratio greater than or equal to 0.5% and less than or equal to 20%, —Either of a monomer of formula (Ia): R—(CH2)3—Si(CH3)2—[O—Si(CH3)2—]nO—Si(CH3)2—(CH2)3—R (Ia), wherein R represents the monovalent radical: —(O—CH2—CH2-)x[O—CH2—CH(CH3)-]yO—C(?O)—CH?CH2, —Or of a monomer of formula (Ib): Si(CH3)3—[O—Si(CH3)2—]m[O—Si(CH3)[(CH2)3—R]—]pO—Si(CH2)3 (Ib), c) optionally of a mass ratio greater than 0% and less than or equal to 5% of monomeric units from at least one monomer of formula (II): R2—C(?O)—O—[(CH2—CH(R4)—O]m—R3 (II), d) optionally of a mass ratio greater than 0% and less than or equal to 5% of at least one monomer with diethylenic or polyethylenic cross-linking; method for the preparation thereof and use as a thickener in topical compositions.

Abstract: This invention involves a process for reducing friction in ethanol during its transport through pipelines. This process involves combining ethanol with a polymer-based composition, characterised in that the polymer is obtained from at least 50 mol % of at least one monomer selected from the group comprising N-substituted acrylamides, N-substituted methacrylamides, N,N-substituted acrylamides, N,N-substituted methacrylamides, substituted acrylates and substituted methacrylates.

Abstract: A comb polymer of which the backbone is 2-acrylamido-2-methylpropanesulfonic acid, onto which poly(N-alkylacrylamide) or poly(N,N-dialkylacrylamide) lateral segments are grafted; process for the preparation thereof comprising: a step (a) of reacting a compound of formula (II) with a compound of formula (III), in a (tert-butanol)-water mixture, so as to obtain a poly(N-alkylacrylamide) or poly(N,N-dialkylacrylamide) telomere of formula (I); a step (c) of reacting, in tert-butanol, the telomer of formula (I) obtained in step (a), with an acid chloride of formula (IV) so as to obtain a solution of the macromonomer of formula (V); a step (e) of copolymerising, in tert-butanol, the macromonomer of formula (V) resulting from step (c), with the ammonium salt of 2-acrylamido-2-methylpropanesulfonic acid and, if desired, a step (f) of purifying the comb polymer obtained in step (e).

Abstract: 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.

Abstract: A comb copolymer consisting of a polymer backbone on which lateral macromonomer segments are grafted, characterised in that said polymer backbone consists: Of more than 55% and up to 90% molar of monomeric units from 2-methyl-2-[(1-oxo-2-propenyl)-amino]-1-propanesulphonic acid (hereinafter referred to as ATBS), Of between 1% and 20% molar, and more specifically of between 4% and 15% molar, either of monomeric units from a cationic monomer or of monomeric units from a monomer of formula (I): CH2?C(R1)—C(?O)—Y—(CH2)m-N(R2)(R3) in which m represents a number of between 1 and 4, Y represents O or NH, R-i represents a hydrogen atom or a methyl radical, R2 and R3, identical or different, represent a methyl radical or an ethyl radical; Optionally of 0.

Abstract: Method for preparing a comb copolymer, includes sequentially: (a) reacting a compound of formula (II): CH2?C(R2)—C(?O)—N(R3)(R4) (II), with a chain-limiting compound of formula (IIIa): HS—R1—NH2 (IIIa) or of formula (IIIb): HS—R1—C(?O)—OH (IIIb), to obtain a poly(N-alkyl acrylamide) or poly(N,N-dialkyl acrylamide) telomer, of formula (Ia): H2N—R1—S—{CH2—C(R2)[C(?O)N(R3)(R4)]-}n-H (Ia) or of formula (Ib): HO—C(?O)—R1—S—{CH2—C(R2)[C(?O)N(R3)(R4)]-}n-H (Ib) formula (IIIa) or (IIIb) where n represents a whole number ?2 and ?100; (b) isolating and/or drying the obtained telomer; (c) reacting the telomer of formula (Ia) or of formula (Ib) in tert-butanol with glycidyl methacrylate (IV) to obtain a solution of the macromonomer of formula (Va): CH2?C(R5)-C(?O)—NH—R1—Z—{CH2—C(R2)[C(?O)N(R3)(R4)]-}n-H (Va) or of formula (Vb); CH2?C(R5)-C(?O)—O—(C?O)-R1—Z—{CH2—C(R2)[C(?O)N(R3) (R4)]-}n-H (Vb); (d) isolating and/or drying the obtained telomer; (e) copolymerizing the macromonomer of formula (Va) or of formula (Vb) in tert

Abstract: A composition including an oil phase, an aqueous phase, at least one water-in-oil emulsifying system in the form of a positive latex, characterized in that the composition includes a straight, branched, or cross-linked anionic polyelectrolyte, including: a) a non-zero molar proportion of monomer units from acrylic acid in free or partially salified form; and b) a non-zero molar proportion of monomer units from the acid of formula (I): CH2?CH—C(?O)—O—[CH2—CH2—C(?O)—O]n—H??(I), where n is a number greater than or equal to (1) and less than or equal to (5), in free or partially salified form. A method for preparing the same, a polymer powder, and the use thereof as a thickening agent for cosmetic or pharmaceutical compositions are also described.

Abstract: A novel composition made of polyalkoxylated derivatives of trimethylolpropane and fatty alcohols, the preparation thereof and the use thereof as a reversing agent for a reversible reverse latex.

Abstract: A self-reversible reverse latex, and its use as a thickener. The self-reversible reverse latex includes: 50%-70 of a cross-linked polyelectrolyte obtained by the polymerization of a monomer of formula (I), with R1 being 8 to 20 carbon atoms and 1?n?30 for a neutral monomer, and a monomer having an acid function; 4%-10% of a water-in-oil emulsifier; 1%-10% of an oil-in-water emulsifier including a surface-active composition (C); 15%-45% oil; and 0%-5% water. Composition (C) is 10%-50% composition (CII) and 50%-90% composition(CIII). Composition(CII) is 60%-100% of a composition of formula (II), with R2 being a 12 carbon alkyl, T1, T2, and T3 being H or a (—CH2—CH2—O—)mi—H radical with 0?mi?10 and 0<?mi?10. Composition (CIII) is 60%-100% of a compound of formula (III) or mixtures of (III) and (IV), with R2 being as defined previously.

Abstract: 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.

Abstract: 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 <5% of at least one monomer with diethylenic or polyethylenic crosslinking; b) 0.5-10% by mass of a terpolymer of stearyl methacrylate, pentacosaethoxylated behenyl methacrylate and N,N-dimethylacrylamide, resulting from the polymerisation, for 100 mole percent: of 80-95 mole percent of stearyl methacrylate, of 2.5-10 mole percent of N,N-dimethylacrylamide, and of 2.5-10 mole percent of pentacosaethoxylated behenyl methacrylate, c) 5-40% by mass of at least one oil, and d) 0.1-40% by mass of water; method of preparing same and use thereof as a thickener.

Abstract: A copolymer that includes for 100 mol %: a) more than 70 mol % and up to 99.9 mol % of hydrophobic monomer units (A) from stearyl methacrylate; and b) 0.1 mol % to 30 mol % of monomer units (B) from at least one monomer of a compound of formula (I) where R1 is a linear or branched alkyl radical comprising 12 to 22 carbon atoms, R2 is a hydrogen atom or a methyl radical, and n is an integer greater than or equal to 0 and lower than or equal to 30, wherein it is understood that said compound of formula (I) is not stearyl methacrylate. The invention also relates to a method for preparing and using same as a modifier of the rheology of the oil phase of a topical cosmetic, dermopharmaceutical, or pharmaceutical composition.

Abstract: A copolymer that includes for 100 mol %: a) more than 70 mol % and up to 99.9 mol % of hydrophobic monomer units (A) from stearyl methacrylate; and b) 0.1 mol % to 30 mol % of monomer units (B) from at least one monomer of a compound of formula (I) where R1 is a linear or branched alkyl radical comprising 12 to 22 carbon atoms, R2 is a hydrogen atom or a methyl radical, and n is an integer greater than or equal to 0 and lower than or equal to 30, wherein it is understood that said compound of formula (I) is not stearyl methacrylate. The invention also relates to a method for preparing and using same as a modifier of the rheology of the oil phase of a topical cosmetic, dermopharmaceutical, or pharmaceutical composition.

Abstract: An anionic polyelectrolyte resulting from the polymerization, for 100% by mass of: a) a mass ratio ?70% and ?98.5% of monomeric units from a monomer with a strong acid function; b) a mass ratio ?0.5% and ?10%,—either of a monomer of formula (1a) : R—(CH2)3-Si(CH2)2-[0-Si(CH3)2-]nO—Si(CH3)2—(CH2)3—R (1a), wherein R represents the monovalent radical: -(0-CH2-CH2-)x[0-CH2—CH(CH3)-]yO—C(?0)-CH?CH2;—or (Ib): Si(CH3)3-[0-Si(CH3)2-]m[0-Si(CH3)[(CH2)3—R]—]pO—Si(CH2)3 (Ib), c) a mass ratio ?1% and ?20% of a monomer of formula (II) : CH2?CH(R1)-C(?0)-0-(CH2)n—CF3 (II), formula (I) wherein radical Ri represents a hydrogen atom or a methyl radical, and n is equal to 1, 2 or 3; d) optionally a mass ratio >0% and ?5% of monomeric units from a monomer of formula (III): R2—C(?0)-0-[(CH2—CH(R4)-0]m-R3 (III), e) optionally a mass ratio >0% and ?5% of a cross-linking monomer, method for its preparation and use as a thickener in topical compositions.