Preservative compositions are provided with improved stability. The preservative compositions comprise a combination of an amphoteric compound and 3-iodo-2-propynylbutyl carbamate (IPBC). In a particular embodiment, the compositions comprise a combination of a betaine compound and 3-iodo-2-propynylbutyl carbamate. The compositions in some embodiments have surprising stability. The preservative composition can be used in personal care products, household products, industrial products and materials. The compositions can be used in a variety of methods for the treatment of surfaces such as cellulosic surfaces, such as wood surfaces. The compositions can be used in one embodiment to provide stain resistance to wood.
The invention discloses a pollution-resistant modified method for a polymer membrane containing arone perssad. The method comprises the following steps: poly(methyl)acrylic acidepoxyalkyl ester is grafted on the surface of an ultra-(micro-)filtration or nanofiltration membrane through ultraviolet graft polymerization; further reaction is conducted to generate alkylhalide; the alkylhalide is conducted by reaction with acrylic acidbetaine compounds under the condition that certain catalyst, ligands or reducing agent are subsistent; the ultra-(micro-)filtration or nanofiltration membrane with favorable hydrophilcity and pollution-resistant performance is obtained. Purified water flux of the prepared ultra-(micro-)filtration or nanofiltration membrane can reach to 50-280 L / m<2>.h; the reject rate of the pollution-resistant ultra-(micro-)filtration or nanofiltration membrane to bovine serum albumin is 95-100%; the recovery rate of water flux reaches to 97-100%. The pollution-resistant modified method is characterized in that a small quantity of initiating agent functional groups are introduced quickly on the surface of the membrane through the light graft method; then graft polymerization is conducted in water phase adopting an atom free radical transferring polymerization method; the pollution-resistant modified method has the advantages that the polymerization system can be repeatedly used, and is easy in continuous production; the polymer is grafted with the zwitter ionic pair perssad with a betaine structure, so that the surface of the membrane is high in hydrophilia; the pollution-resistant capability is improved remarkably.
A cleaner composition comprises a surfactant, a sodium source, an odor neutralizer, a fragrance, and a biocide, wherein the odor neutralizer comprises a betaine compound, aminoalcohol, a polyol, and an ionone, and wherein the cleaner composition is stable at a pH of about 9.5 to about 11.5 when stored for 24 months at a temperature of about 25 DEG C. A spray dispenser comprises the cleaner composition and a propellant. Also described is a method of cleaning, deodorizing, or a combination thereof, automobile interiors by applying the disclosed cleaner composition to an automobile interior.
The invention relates to a cellcryopreservation protection composition, use thereof and a cellcryopreservation method. The cellcryopreservation protection composition contains amphipathic molecules with a general formula structure of R1-N+ (CH3)2-(CH2) n-R2, wherein R1 is alkyl of a straight chain or a branch chain of the carbon numbers 1 to 10, and is optionally substituted by a substituent; R2 is selected from an optional group with negative charge in a group consisting of COO-, -SO4-, -SO3- and a compound as shown in the description; R3 is selected from a group in a group consisting of (methyl) acryoyloxyalkyl, alkyl and alkenyl; and the amphipathic molecules with the general formula structure of R1-N+ (CH3)2-(CH2) n-R2 are a betaine compound preferably. The cell cryopreservation protection composition can implement cell cryopreservation non-toxically and efficiently, and after resuscitation of cells, the yield of the cells is quite high, and gradient cryopreservation is not required; and after resuscitation of the cells, the cells can be directly used or are slightly diluted and then used.
This invention provides a hydroxyl group-containing betaine compound and a long-chain alkyl group-containing betaine compound, both of which are highly biodegradable and useful as surfactants, bactericides, antistatic agents, softening agents, rust inhibitors, resin modifiers, synthetic intermediates, etc. The invention further provides processes for producing such betaine compounds.The hydroxyl group-containing betaine compound mentioned above can be represented by the following general formula (1)wherein R1 and R2 maybe the same or different and each represents a hydrogen atom, a C1-8 hydrocarbon group or a C1-8 hydrocarbon group having a hydroxyl group, exclusive of the case in which both of R1 and R2 respectively represent a hydrogen atom; in case neither R1 nor R2 represents a hydrogen atom, R1 and R2 may be joined to each other through a single bond or through at least one kind of element selected from the group consisting of O, S and N; R3 represents a hydrogen atom, a methyl group or a hydroxymethyl group; A represents a hydrocarbon group of 2~25 carbon atoms.
The present invention provides a conductive polymer composition which contains (A) a polyaniline-based conductive polymer having a repeating unit represented by the general formula (1), (B) a polyanion, and (C) a betaine compound,wherein RA1 to RA4 independently represent a hydrogen atom, a halogen atom, or a linear, branched, or cyclic monovalent hydrocarbon group having 1 to 20 carbon atoms and optionally containing a heteroatom; and RA1 and RA2, or RA3 and RA4 may be bonded to each other to form a ring. There can be provided a conductive polymer composition that has excellent antistatic performance and applicability, does not adversely affect a resist, and can be suitably used in lithography using electron beam or the like.
A concentrated aqueous betaine surfactant composition consisting essentially of a betaine compound and from 0.5 to 3.5 wt %, based on the total weight of the composition, of at least one fluidizing additive selected from the group consisting of (i) a fatty aciddimer composition and (ii) phosphoric esters of fatty alcohols or polyethoxylated fatty alcohols, the composition containing a solid content of at least 40 wt %, said composition having a reduced viscosity and a low gel point.
The invention discloses an oil displacement surfactant for a high-temperature and high-salt oil reservoir as well as a preparation method and application of the oil displacement surfactant. The oil displacement surfactant comprises the following components in parts by weight: 1-35 parts of fatty acid alkanolamide or esterification derivatives thereof, 1-35 parts of betaine compounds, 1-30 parts ofalkylbenzene sulfonate and 1-30 parts of low-molecular alcohol. Through compounding of the anionic surfactant alkylbenzene sulfonate, the nonionic surfactantfatty acid alkanolamide and the zwitterionic surfactant betaine, the salt resistance and the divalent cation resistance of the surfactant are greatly improved through the synergistic effect of multiple groups, and the surfactant can be usedfor oil displacement of an oil layer with high mineralization degree; and the oil displacement surfactant can remarkably reduce oil-water interfacial tension, is high in stability, small in dosage andhigh in efficiency, can be used as an oil displacement surfactant of a high-temperature and high-salt oil reservoir, can also be suitable for a low-temperature and low-salt oil reservoir, and is widein application range.
There are provided a processing liquid for suppressing pattern collapse of a fine metal structure, containing at least one member selected from the group consisting of an ammoniumhalide having a fluoroalkyl group, a betaine compound having a fluoroalkyl group, and an amine oxide compound having a fluoroalkyl group, and a method for producing a fine metal structure using the same.
The invention provides a method for synthesizing betaine from long-chain tertiary amine by means of anhydrous quaternization under normal pressures. The method includes a step of enabling the long-chain tertiary amine and chloro hydroxypropyl sodiumsulfonate or chloroactic acid or sodium chloroacetate to react to each other in anhydrous mixed solvent systems under the conditions of the normal-pressures and the temperatures of 110-150 DEG C to generate long-chain betaine compounds. The method has the advantages that the method is particularly suitable for producing the displacement betaine compounds with long carbon chains, the reaction temperatures can be increased to reach 110-150 DEG C by the aid of the anhydrous mixed solvent systems under the normal pressures, and the reaction speeds and the conversion rates can be increased; generation of hydrolysis products under high-temperature conditions can be suppressed, the conversion rates can be higher than 95% by means of quaternization reaction of the tertiary amine with carbon chains higher than C18 within the reaction time of four hours, shortcomings of low flashing points and incapability of assisting solubilization of betaine with long carbon chains of conventional processes for synthesizing the betaine can be effectively overcome, and the betaine with the long carbon chains can be safely and efficiently produced by the aid of the method.