Methods for cleaning articles
    36.
    发明授权
    Methods for cleaning articles 失效
    清洁物品的方法

    公开(公告)号:US5300154A

    公开(公告)日:1994-04-05

    申请号:US872210

    申请日:1992-04-22

    摘要: The invention relates to methods and compositions for cleaning a wide range of soil types from dirty articles, such as metal, ceramic or glass substrates. A first class of solvent compositions used for cleaning is an oxidative stable mixture of non-polar aromatic hydrocarbons and an organic polar component for cleaning of low and intermediate polar soils. Alternately, water and surfactant is added to the mixture to form a water-in-oil emulsion for cleaning high polarity soils. A second class of solvent compositions used for cleaning dirty articles is a hydrogenated or dehydrogenated analogue of a terpene compound. The solvent composition is used in a process wherein a dirty article is contacted with the solvent under conditions that result in cleaning the soil type from the article. Residual solvent contamination is removed from the article surface by contacting the contaminated article at an elevated temperature with an aqueous medium and/or a low-boiling solvent. The solvent residue is then removed by evaporation.

    摘要翻译: 本发明涉及用于从诸如金属,陶瓷或玻璃基底的脏物品清洗各种土壤类型的方法和组合物。 用于清洁的第一类溶剂组合物是用于清洁低和中等极性污垢的非极性芳烃和有机极性组分的氧化稳定混合物。 或者,向混合物中加入水和表面活性剂以形成用于清洁高极性污垢的油包水乳液。 用于清洁脏物品的第二类溶剂组合物是萜烯化合物的氢化或脱氢类似物。 溶剂组合物用于在污染物品与溶剂接触的过程中,所述条件导致从制品中清除土壤类型。 通过使污染的制品在高温下与水性介质和/或低沸点溶剂接触,从制品表面除去残留的溶剂污染物。 然后通过蒸发除去溶剂残余物。

    Paint stripper compositions containing gamma-butyrolactone
    38.
    发明授权
    Paint stripper compositions containing gamma-butyrolactone 失效
    含有γ-丁内酯的脱漆剂组合物

    公开(公告)号:US5106525A

    公开(公告)日:1992-04-21

    申请号:US684406

    申请日:1991-04-12

    申请人: Carl J. Sullivan

    发明人: Carl J. Sullivan

    IPC分类号: C09D9/00 C11D7/26 C11D7/32

    摘要: Aggressive, water-soluble coating remover compositions are disclosed. The compositions contain .gamma.-butyrolactone, an organic acid, and water, and optionally include solvents, surfactants, thickeners, and rust inhibitors. The coating removers of the invention are uniquely effective in that they are both water rinsable and capable of removing highly crosslinked coatings.

    摘要翻译: 公开了侵蚀性的水溶性涂层去除剂组合物。 组合物含有γ-丁内酯,有机酸和水,并且任选地包括溶剂,表面活性剂,增稠剂和防锈剂。 本发明的涂层去除剂独特有效,因为它们既可水洗,又能除去高度交联的涂层。

    Stabilized propyl bromide compositions
    40.
    发明授权
    Stabilized propyl bromide compositions 有权
    稳定的丙基溴组合物

    公开(公告)号:US08129325B2

    公开(公告)日:2012-03-06

    申请号:US11577899

    申请日:2004-11-05

    IPC分类号: C11D17/00

    摘要: Certain substituted phenolic compounds when used with or without 1,2-epoxides as the sole stabilizer components are very effective in stabilizing n-propyl bromide (NPB). In a standard commercially important 60° C. stability test, representative substituted phenolic compounds used pursuant to this invention, can enable NPB to pass the test even though present at levels of about 50 ppm (wt/wt) or less in NPB containing no other stabilizer additive component. In fact, amounts as low as 1 ppm have been found effective with various substituted phenolic compounds. In addition, it has been found that one of the preferred stabilizers of this invention—2,6-di-tert-butyl-p-cresol—even though higher boiling than NPB, left inconsequential amounts of residue at least throughout the range of 1 to 30 ppm (wt/wt). Also, it has been found that certain other preferred stabilizers of this invention can provide synergistically improved stability in passing the 60° C. stability test when used with at least one 1,2-epoxide, notably butylene oxide.

    摘要翻译: 当使用或不使用1,2-环氧化物作为唯一稳定剂组分时,某些取代的酚类化合物在稳定正丙基溴(NPB)方面非常有效。 在标准的商业上重要的60℃稳定性试验中,根据本发明使用的代表性取代的酚类化合物可以使得NPB通过试验,即使在不含其它物质的NPB中,在约50ppm(wt / wt)或更低的水平下存在 稳定剂添加剂组分。 事实上,已发现低至1ppm的量与各种取代的酚类化合物有效。 此外,已经发现,本发明的一种优选的稳定剂-2,6-二叔丁基对甲酚 - 尽管比NPB沸点更高,但至少在1的范围内留下无关紧要的残余量 至30ppm(wt / wt)。 此外,已经发现,当与至少一种1,2-环氧化物,特别是环氧丁烷一起使用时,本发明的某些其它优选的稳定剂可以提供协同改进的通过60℃稳定性试验的稳定性。