摘要:
Method for preparing a vaccine, comprising—a step a) of preparing an adjuvant composition by dispersing, in a physiologically acceptable aqueous solution, at least one inverse latex or a powder of polymer resulting from the atomization of said inverse latex; —a step b) of mixing the composition obtained in step a) into an antigenic medium, intended to form a vaccine composition.
摘要:
Method for preparing a vaccine, comprising—a step a) of preparing an adjuvant composition by dispersing, in a physiologically acceptable aqueous solution, at least one inverse latex or a powder of polymer resulting from the atomization of said inverse latex; —a step b) of mixing the composition obtained in step a) into an antigenic medium, intended to form a vaccine composition.
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
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:
Process for the preparation of a an inverse latex including from 20% to 70% by weight and preferably from 25% to 50% by weight of a branched or crosslinked polyelectrolyte, characterized in that the polyelectrolyte is a copolymer of 2-acrylamido-2-methylpropanesulfonic acid partially or totally salified with acrylamide and optionally one or more monomers chosen from monomers containing a partially or totally salified weak acid function and/or from neutral monomers other than acrylamide, the production process including the control of the pH in the initial aqueous phase; Cosmetic, dermopharmaceutical or pharmaceutical composition including the inverse latex directly obtained by the process.
摘要:
Method for preparing an anionic polyelectrolyte including up to 95 mol % of monomer units from 2-methyl 2-[(1-oxo 2-propenyl) amino] 1-propanesulfonic acid that is totally salified in the form of sodium salt, up to 90 mol % of at least one neutral monomer, and optionally up to 10 mol % of at least one monomer of formula (I): where: R1 is a hydrogen atom or a methyl radical, R is an alkyl radical, and n is a number greater than or equal to 1 and less than or equal to 50, the method including: a) preparing a reaction mixture containing, in a solvent (S), 2-methyl 2-[(1-oxo 2-propenyl) amino] 1-propanesulfonic acid, the neutral monomer(s), the neutralizing agent, and optionally, the monomer(s) of formula (I); and b) polymerizing the reaction mixture. The polyelectrolyte can be used as a thickening and/or stabilizing and/or emulsifying agent for a cosmetic, dermopharmaceutical or pharmaceutical topical composition.
摘要:
Process for the preparation of a an inverse latex including from 20% to 70% by weight and preferably from 25% to 50% by weight of a branched or crosslinked polyelectrolyte, characterized in that the polyelectrolyte is a copolymer of 2-acrylamido-2-methylpropanesulfonic acid partially or totally salified with acrylamide and optionally one or more monomers chosen from monomers containing a partially or totally salified weak acid function and/or from neutral monomers other than acrylamide, the production process including the control of the pH in the initial aqueous phase; Cosmetic, dermopharmaceutical or pharmaceutical composition including the inverse latex directly obtained by the process.
摘要:
The present invention relates to a method of treating porous and permeable underground formations or cavities of reservoir rock or sand foundation type. The method consists in injecting a liquid composition comprising microgels into the formations in order to reduce the production of water, gas or sands, and/or for zone abandonment.
摘要:
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.