摘要:
Polymers tagged with pendant fluorescent groups are prepared by the (trans)amidation derivatization of pre-existing polymers having carbonyl-type pendant groups. Polymers having pendant amide groups wherein the amide nitrogen is substituted with fluorescent moieties, prepared by (trans)amidation derivatization, and polymers having pendant (sulfonated) napthalene moieties substituted to amide nitrogen are provided, with mer units of the Formula V : wherein R 4 is C n H 2n and n is zero or an integer of from 1 to about 10, R 1 , R 2 and R 3 are independently hydrogen or a substituent other than hydrogen, wherein one of X 1 and X 2 is hydrogen and the other is an (alkylene) naphthalene having from 0 to 2 sulfonic acid substituents or salts thereof, or wherein X 1 and X 2 contain, separately or together, at least one organic fluorescent group.
摘要:
A method for inhibiting corrosion in industrial cooling waters which contain hardness and a pH of at least 6.5, by dosing the water with a composition which comprises a water-soluble inorganic phosphate capable of inhibiting corrosion in an aqueous alkaline environment and a hydrocarbon polymer containing an N-substituted acrylamide polymers with an amide structure as follows: where R. is hydrogen or methyl, where R, is a hydrogen or an alkyl and R is alkylene or phenylene, and X is sulfonate, (poly)hydroxyl, (poly)carboxyl or carbonyl, and combinations thereof; or containing derivatized maleic anhydride homo-co-and terpolymers having N-substituted maleamic acid units, N-substituted maleimide units and maleic acid (and salts) units having a structure as follows: where R,, R 2 and R 3 are each independently chosen from the group consisting of hydrogen, hydroxyl, carboxyalkyl, carboxyamide, phenyl, substituted phenyl, linear or branched alkyl of from one to ten carbon atoms, and substituted alkyl of from one to ten carbon atoms, where the substituent is phosphonic acid; phosphinic acid; phosphate ester; sulfonic acid; sulfate ester, carboxyamide. (poly)carboxy and (poly)-hydroxy, alkoxy and carboxylate ester groups; and combinations thereof.
摘要:
The invention is a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of an N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine of the formula:
wherein R is selected from the group consisting of alkyl and aryl groups, and R 1 is selected from the group consisting of alkyl groups, aryl groups, and alkylaryl groups, and an anionic monomer.
The invention is also a method of inhibiting the precipitation and deposition of scale on metal surfaces in contact with industrial cooling waters comprising the addition of an effective, scale-inhibiting amount of a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of a betaine of the formula:
wherein R is selected from the group consisting of alkyl and aryl groups, and R 1 is selected from the group consisting of alkyl groups, aryl groups, and alkylaryl groups, and an anionic monomer.
A preferred polymer is a water-soluble copolymer of N,N-diallyl-N-methyl-N-(2-sulfoethyl) ammonium betaine and acrylic acid.
摘要:
Polymers tagged with pendant fluorescent groups are prepared by the (trans)amidation derivatization of pre-existing polymers having carbonyl-type pendant groups. Polymers having pendant amide groups wherein the amide nitrogen is substituted with fluorescent moieties, prepared by (trans)amidation derivatization, with a fluorescent composition of the Formula III
wherein one of R 5 and R 6 may be hydrogen and within one of R 5 and R 6 , or within R 5 and R 6 taken together, there is an organic fluorescent group, in the presence of a formaldehyde-bisulfite post-polymerization derivatization agent.
摘要:
Polymers tagged with pendant fluorescent groups are prepared by the (trans)amidation derivatization of pre-existing polymers having carbonyl-type pendant groups. Polymers having pendant amide groups wherein the amide nitrogen is substituted with fluorescent moieties, prepared by (trans)amidation derivatization, with a fluorescent composition of the Formula III
wherein one of R 5 and R 6 may be hydrogen and within one of R 5 and R 6 , or within R 5 and R 6 taken together, there is an organic fluorescent group, in the presence of a formaldehyde-bisulfite post-polymerization derivatization agent.