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1. 发明授权

US5196146A Aqueous cleaning formulation containing a 2-piperazinone, method of using the same and concentrate for preparing the same 失效
标题翻译：含有2-哌嗪酮的水性清洁制剂，其使用方法及其制备方法
公开(公告)号：US5196146A
公开(公告)日：1993-03-23
申请号：US784203
申请日：1991-10-28
申请人： Joanna M. Farella , Dane Chang , Felipe A. Donate , Aubrey J. Rhymes, Jr.
发明人： Joanna M. Farella , Dane Chang , Felipe A. Donate , Aubrey J. Rhymes, Jr.
IPC分类号： C11D1/83 , C11D3/00 , C11D3/28 , C23G1/26
CPC分类号： C23G1/26 , C11D1/83 , C11D3/0073 , C11D3/28
摘要： An aqueous formulation for cleaning grease and oil from metal, plastic, glass or other surfaces includes water, a surfactant, and a corrosion-inhibiting amount of a 2-piperazinone. The surfactant is chosen from the class of materials possessing at least some ability in aqueous solution to disperse the grease and oil in an aqueous suspension. The formulation preferably includes both an anionic and a nonionic surfactant. The 2-piperazinone inhibits corrosion of the metal or other surface without unduly reducing the dispersive ability of the surfactant(s). The preferred 2-piperazinones for use in the disclosed invention are 4-(2-hydroxyethyl)-2-piperazinone (4-HEP) and N,N-dimethyl-2-piperazinone (NNDP). The formulation is used by agitation in contact with the surface to be cleaned, for example, by mechanical agitation of the surface, by spraying the formulation against the surface, or by the application of ultrasound waves. A concentrate for preparing the formulation contains the surfactant(s) and 2-piperazinone at a concentration 5 to 20 times their concentrations in the formulation; the concentrate is then diluted with 5 to 20 parts of water to yield the formulation.
摘要翻译：用于从金属，塑料，玻璃或其他表面清洁油脂和油的水性制剂包括水，表面活性剂和防腐蚀量的2-哌嗪酮。表面活性剂选自在水溶液中具有至少一些能力的材料，以将油脂和油分散在水性悬浮液中。制剂优选包括阴离子和非离子表面活性剂。 2-哌嗪酮抑制金属或其他表面的腐蚀，而不会过度降低表面活性剂的分散能力。用于本发明的优选的2-哌嗪酮是4-（2-羟乙基）-2-哌嗪酮（4-HEP）和N，N-二甲基-2-哌嗪酮（NNDP）。通过与待清洁的表面接触的搅拌使用该制剂，例如通过机械搅动表面，通过将制剂喷雾在表面上，或通过施加超声波来使用。用于制备制剂的浓缩物含有浓度为制剂浓度5至20倍的表面活性剂和2-哌嗪酮; 然后将浓缩物用5至20份水稀释以得到制剂。

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