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公开(公告)号:US5122278A
公开(公告)日:1992-06-16
申请号:US558925
申请日:1990-07-26
CPC分类号: C02F5/12
摘要: A method for treating an aqueous system is disclosed which comprises incorporating therein a water soluble organic sulphonate copolymer and an optionally N-substituted water soluble copolymer of acrylamide or methacrylamide and a copolymerizable monomer.
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公开(公告)号:US4566972A
公开(公告)日:1986-01-28
申请号:US691724
申请日:1985-01-15
CPC分类号: C02F5/12
摘要: A method of inhibiting and preventing scale in an aqueous system is described which comprises incorporating in the water at least one amino carboxylate having the formula:RN[--(CH.sub.2).sub.x --Z].sub.2in which x is 1 or 2, R represents --(CH.sub.2).sub.x --Z or --CH.sub.2 CH.sub.2 N[--(CH.sub.2).sub.x --Z].sub.2 and Z represents a --COOH group, or a salt thereof, and at least one water-soluble copolymer possessing recurring units of the formula: ##STR1## wherein R.sub.1 represents hydrogen, lower alkyl or --CH.sub.2 COOH, R.sub.2 represents hydrogen or lower alkyl, X represents --COOH and Z represents hydrogen or --COOH, or X and Z together represent --CO--O--CO--, and Y represents --SO.sub.3 H, --C.sub.6 H.sub.5 SO.sub.3 H (para) or --CONHQ(R.sub.3)(R.sub.4) SO.sub.3 H in which Q represents --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 -- and R.sub.3 and R.sub.4 independently represent hydrogen, phenyl, substituted phenyl, C 1-12 linear or branched alkyl or C 3-12 cycloalkyl, or a salt thereof.
摘要翻译: 描述了一种抑制和防止水性体系中的结垢的方法,其包括在水中加入至少一种具有下式的RN [ - (CH 2)x Z] 2的氨基羧酸酯,其中x为1或2,R表示 - (CH 2 )xZ或-CH 2 CH 2 N [ - (CH 2)x Z] 2,Z表示-COOH基团或其盐,以及至少一种具有下式的重复单元的水溶性共聚物:其中R 1表示氢,低级 烷基或-CH 2 COOH,R 2表示氢或低级烷基,X表示-COOH,Z表示氢或-COOH,或X和Z表示-CO-O-CO-,Y表示-SO 3 H,-C 6 H 5 SO 3 H(对) 或-CONHQ(R3)(R4)SO3H,其中Q表示-CH2-或-CH2-CH2-,R3和R4独立地表示氢,苯基,取代的苯基,C 1-12直链或支链烷基或C 3-12环烷基 ,或其盐。
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公开(公告)号:US4689201A
公开(公告)日:1987-08-25
申请号:US708303
申请日:1985-03-05
申请人: Stuart W. Longworth , John G. Baker
发明人: Stuart W. Longworth , John G. Baker
摘要: Corrosion in liquid, especially aqueous systems such as cooling systems, is controlled by the addition of a vegetable tannin or a derivative thereof, a triazole, a hydroxylamine, a neutralizing amine, and a water soluble salt of a Group II metal, in particular zinc, magnesium or calcium.
摘要翻译: 通过添加植物单宁或其衍生物,三唑,羟胺,中和胺和第II族金属的水溶性盐,特别是锌来控制液体,特别是含水体系如冷却系统中的腐蚀 ,镁或钙。
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