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    • 95. 发明公开
    • STABILIZED PROPYL BROMIDE COMPOSITIONS
    • 稳定的丙基溴化物组合物
    • EP1812543A1
    • 2007-08-01
    • EP04810451.7
    • 2004-11-05
    • ALBEMARLE CORPORATION
    • MCKINNIE, Bonnie, GaryMILLER, Joseph, H.
    • C11D7/50C23G5/028
    • C11D7/5018C11D7/261C11D7/262
    • 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.
    • 当使用或不使用1,2-环氧化物作为唯一的稳定剂组分时,某些取代的酚化合物在稳定正丙基溴(NPB)方面非常有效。 在标准商业上重要的60℃稳定性试验中,根据本发明使用的代表性取代酚化合物可以使NPB通过测试,即使NPB在不含其它稳定剂的NPB中以约50ppm(wt / wt)或更低的水平存在 添加剂组分。 实际上,已发现低至1ppm的量对各种取代的酚类化合物有效。 此外,已经发现,本发明优选的稳定剂之一即使比NPB沸点更高,但至少在整个范围内都留下了无关紧要的量的残留物 - 2,6-二叔丁基对甲酚 为1至30ppm(wt / wt)。 而且,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,本发明的某些其他优选稳定剂在通过60℃稳定性测试时可以提供协同改进的稳定性。