摘要:
A method is provided for inhibiting nitrosation of an aqueous amine solution used in a process of removing carbon dioxide from a flue gas. That method includes a step of adding an effective amount of an antioxidant to the aqueous amine solution being circulated between an absorber and a stripper of a carbon dioxide capture system.
摘要:
A process for inhibiting polymerization of an aromatic vinyl compound during the stage of producing, purifying, storing or transporting the aromatic vinyl compound which not only inhibits an initial polymerization but also inhibits polymerization efficiently over a long period of time and which is excellent in the handleability. The process involves the step of adding a nitrogenous aromatic compound in combination with a sulfonic acid compound to the aromatic vinyl compound during the production, purification, storage of transportation thereof.
摘要:
Lubricant compositions having improved anticorrosion performance comprising an extreme pressure compound comprising a sulfur-containing compound, an antiwear compound comprising a phosphorous-containing compound, an alkylene amine friction modifying compound, a dispersant compound containing basic nitrogen, and a diluent or base oil as applicable, wherein any of compounds other than the diluent or base oil can be the same or different compounds. These lubricant compositions provide improved anticorrosion resistance and fatigue performance, which prolongs service lives of lubricated parts, especially those used in outdoor applications.
摘要:
An additive system for a polyvinyl chloride formulation for improved processability while maintaining thermal stability of the formulation, and having a low-water-blush haze and low extractability in an aqueous media, the additive system including a primary stabilizer which is a Lewis acid metal compound selected from the group consisting of organo-tin compounds and organo-zinc compounds, a secondary stabilizer selected from the group consisting of epoxide compounds having less than approximately 5.2 oxirane groups per molecule; and, an external lubricant for lubrication of the PVC formulation, wherein a critical ratio of the primary stabilizer to the secondary stabilizer maximizes thermolytic color stability while limiting generation of excessive build-up, plate-out, dark particles during the processing of the polyvinyl chloride formulation. And wherein the invention provides concentration levels of the stabilizers and an oxirane per molecule content of the secondary stabilizer which minimizes the extractbiles in aqueous media.
摘要:
A method of protecting 3-isothiazolones of the formula: ##STR1## wherein Y is (C.sub.1 -C.sub.18)alkyl or (C.sub.3 -C.sub.12)cycloalkyl each optionally substituted with one or more of hydroxy, halo, cyano, alkylamino, dialkylamine, arylamino, carboxy, carbalkoxy, alkoxy, aryloxy, alkylthio, arylthio, haloalkoxy, cycloaklylamino, carbamoxy, or isothiazolonyl; an unsubstituted or halo-substituted (C.sub.2 -C.sub.8) alkenyl or alkynyl; a (C.sub.7 -C.sub.10)aralkyl optionally substituted with one or more of halogen, (C.sub.1 -C.sub.4)alkyl or (C.sub.1 -C.sub.4)alkoxy; and an aryl optionally substituted with one or more of halogen, nitro, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkyl-acylamino, carb(C.sub.1 -C.sub.4)alkoxy or sulfamyl; and R and R.sup.1 is each independently H, halogen (C.sub.1 -C.sub.4) alkyl, (C.sub.4 -C.sub.8) cycloalkyl or joined together to form a phenyl; comprising incorporating therewith an effective amount of a sulphur-containing compound, or salt thereof, capable of reversibly forming an adduct with said isothiazolone. Stabilized isothiazolones and adducts with the sulfur-containing compound are also disclosed.
摘要:
Inhibition of popcorn polymer growth by treatment with a sulfur-containing compound. The sulfur-containing compound can be added to organic material from which popcorn polymer is formed, or applied to extant popcorn polymer.
摘要:
The present invention relates to new fluorinated products resulting from the reaction of:(a) one molecule of one or more acids of the formula:HS - A (COOH).sub.n (I) and of(b) one to five molecules of one or more compounds possessing at least one ethylenic bond, at least one of these compounds corresponding to the general formula: ##STR1## and possibly neutralized or partially neutralized with an inorganic or organic base.In the formulae (I) and (II), A represents an aliphatic or aromatic hydrocarbon radical, n is a whole number from 1 to 4, Rf represents a straight or branched perfluorinated chain containing 1 to 20 carbon atoms, B represents bivalent, possibly branched, chaining and may comprise sulfur, oxygen or nitrogen atoms, one of the symbols R represents a hydrogen atom and the other a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms.These products, applied to substrate materials, confer upon these an oilproofing and waterproofing effect as well as a resistance to aggressive products or solvents.
摘要:
A method of stabilizing organic substrate materials having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light which comprises making coexist with the organic substrate at least one metal complex salt represented by the following general formula (I): ##STR1## wherein Cat represents a divalent or a monovalent cation, and n is 1 or 2. A photographic material thus stabilized is also disclosed.
摘要:
wherein x and y are 1-6, R4 and R9 are alkyl, alkenyl, cycloalkyl or optionally substituted aromatic aralkyl or aralkenyl hydrocarbyl group, R3 and R5 are as R4 or R9 or is hydrogen or R3 and R5 form a cycloalkyl ring. The organotin stabilisers are carboxylates, mercapto carboxylates, carboxylate ester from diacids, sulphides, mercaptides or thiostannoic acids. An ester, which is costabiliser of mono or di-organotin stabilisers for halogen containing resins, is of formula
摘要:
Novel polyacrylic acid resins are prepared by polymerizing a monomer selected from the group consisting of H.sub.2 C.dbd.CHCO.sub.2 X, H.sub.2 C.dbd.CR.sup.1 CO.sub.2 X, HR.sup.2 C.dbd.CHCO.sub.2 X, HR.sup.2 C.dbd.CR.sup.1 CO.sub.2 X, HR.sup.2 C.dbd.CHCOX, H.sub.2 C.dbd.CHCOX, H.sub.2 C.dbd.CR.sup.1 COX, HR.sup.2 C.dbd.CR.sup.1 COX, H.sub.2 C.dbd.CHCSO.sub.v X, HR.sup.2 C.dbd.CHCSO.sub.v X, HR.sup.2 C.dbd.CR.sup.1 CSO.sub.v X, H.sub.2 C.dbd.CR.sup.1 CSO.sub.v X, H.sub.2 C.dbd.CHCON(R.sup.3).sub.2, HR.sup.2 C.dbd.CHCON(R.sup.3).sub.2, H.sub.2 C.dbd.CR.sup.1 CON(R.sup.3).sub.2, OR HR.sup.2 C.dbd.CR.sup.1 CON(R.sup.3).sub.2, or a combination thereof, in the presence of at least 10% by weight of reaction components of an aromatic sulfonic acid or its salt, wherein:R.sup.1 and R.sup.2 are independently a substituted or unsubstituted alkyl, alkenyl, aromatic, aralkyl or alkaryl moiety of C.sub.1 to C.sub.20 ;R.sup.3 is independently hydrogen or a substituted or unsubstituted alkyl, alkenyl, aromatic, aralkyl or alkaryl moiety of C.sub.1 to C.sub.20 ; andX is hydrogen, substituted or unsubstituted alkyl, alkenyl, aromatic, aralkyl, or alkaryl moiety of C.sub.1 to C.sub.20 ; --CH.sub.2 CH.sub.2 (CF.sub.2 CF.sub.2).sub.n CF.sub.2 CF.sub.3, wherein n is 1-7; polyoxyalkylene; --C(R.sup.2).sub.2 R.sup.3 Y, wherein R.sup.3 is alkylene or polyoxyalkylene (or a combination thereof), and Y is --OSO.sub.3 H, --SO.sub.3 H, --CO.sub.2 H, --PO.sub.3 H, --OPO.sub.3 H, or a salt thereof; CF.sub.3 (CF.sub.2).sub.q -, wherein q is 1-11, hexafluorobutyl, tetrafluoropropyl, sodium, potassium, lithium, ammonium, or quaternary amine; and v is 0, 1, or 2.
摘要翻译:通过聚合选自H 2 C = CHCO 2 X,H 2 C = CR 1 CO 2 X,HR 2 C = CHCO 2 X,HR 2 C = CR 1 CO 2 X,HR 2 C = CHCOX,H 2 C = CHCOX,H 2 C = CR 1 COX,HR 2 C = CR 1 COX,H 2 C = CHCSOvX,HR2C = CHCSOvX,HR2C = CR1CSOvX,H2C = CR1CSOvX,H2C = CHCON(R3)2,HR2C = CHCON(R3)2,H2C = CR1CON(R3)2,或HR2C = CR1CON(R3) 在至少10重量%的芳族磺酸或其盐的反应组分的存在下,其中:R 1和R 2独立地是C 1 -C 20的取代或未取代的烷基,烯基,芳基,芳烷基或烷芳基部分; R 3独立地为氢或C1至C20的取代或未取代的烷基,烯基,芳族,芳烷基或烷芳基部分; 且X为氢,C1至C20的取代或未取代的烷基,烯基,芳族,芳烷基或烷芳基部分; -CH 2 CH 2(CF 2 CF 2)n CF 2 CF 3,其中n为1-7; 聚氧化烯 -C(R 2)2 R 3 Y,其中R 3是亚烷基或聚氧化烯(或其组合),Y是-OSO 3 H,-SO 3 H,-CO 2 H,-PO 3 H,-OPO 3 H或其盐; CF 3(CF 2)q - ,其中q为1-11,六氟丁基,四氟丙基,钠,钾,锂,铵或季胺; v为0,1或2。