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Alkaline stripping solns. contg. amine accelerators - for stripping protective and/or decorative organic coatings from surfaces
Alkaline stripping solns. contg. amine accelerators - for stripping protective and/or decorative organic coatings from surfaces
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机译:碱性汽提液。续胺促进剂-用于从表面剥离保护性和/或装饰性有机涂层
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摘要
The accelerators are (A) alkanolamines of formula (I) R1R2N-R'-OH (I) (where R' is alkyl with up to 4C atoms; R1 and R2 are H, alkyl, aryl or hydroxyalkyl) e.g. phenyldiethanol, associated with (B) a synergic amt. of a different amine selected from mono-, di. or tri-ethanolamine, melamine, 2-(2-aminoethoxy)-ethanol, o-phenylene diamine 3-methoxypropylamine, phenyldiethanolamine, ethoxyethoxy propylamine, N-aminoethyl piperazine, 2-amino-2-ethyl-1:3-propanediol, mono- di- and tri-isopropanolamine. The mol. ratio of (A) to (B) is 0.3-3 and the concn. compsn. contains 3-50% of the accelerator and 50-97% alkaline material, esp. a major proportion of alkali hydroxides.
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机译:促进剂是(A)式(I)的链烷醇胺:R 1 R 2 N-R′-OH(I)(其中R′是具有至多4个C原子的烷基; R 1和R 2是H,烷基,芳基或羟烷基)。苯基二乙醇,与(B)协同作用。选自一元,二元的不同胺或三乙醇胺,三聚氰胺,2-(2-氨基乙氧基)-乙醇,邻苯二甲胺3-甲氧基丙胺,苯基二乙醇胺,乙氧基乙氧基丙胺,N-氨基乙基哌嗪,2-氨基-2-乙基-1:3-丙二醇,单-二和三异丙醇胺。摩尔。 (A)与(B)之比为0.3-3,浓度为。 compsn。包含3-50%的促进剂和50-97%的碱性物质,尤其是。大部分的碱金属氢氧化物。
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