PREPARATION OF SOME PURE POLYOXYETHYLENEGLYCOL ETHERS. PART I
作者:B. A. Gingras、C. H. Bayley
DOI:10.1139/v57-087
日期:1957.7.1
The Williamson ether synthesis has been applied to the preparation of polyoxyethyleneglycol mono- and di-ethers. These were obtained by reacting the mixed potassium salts of hexaoxyethyleneglycol with alkyl or aryl halides. Hexaoxyethyleneglycol monoethers of the type R•O(CH2CH2•O)6H, (R = n-C10H21, n-C12H25, n-C14H29, and p-iso-C8•H17•C6H4•O•CH2CH2) and diethers of the type R•O(CH2•CH2•O)6•R, (R = n-C10H21
The present invention provides sulfoxide compounds comprising hydrophobic ester or amide moieties such that the compounds have surfactant properties. Also provided are methods for using the sulfoxide compounds or mixtures of the sulfoxide compounds in a variety of applications.
A detergency enhancing polymer is used in a laundry cleaning operation to improve removal of oily and/or greasy soil from cotton fabrics. This polymer is a homopolymer or copolymer containing one or more monomer units independently selected from those of formula (I)
wherein -A- is selected from groups of formula -R5-, -R5-(CO)-R6-, -R5-(CO)-O-R6, -R5-O-(CO)-R6-, -R5-(CO)-NH-R6-, -R5-NH-(CO)-R6-, wherein R5 and R6 are independently absent, or represent C1-3 alkyl groups;
R1, R2 and R3 are independently selected from hydrogen, C1-3 alkyl, C1-3 alkenyl, hydroxy-C1-3 alkyl and C5-8 cycloalkyl groups; and
R4 is selected from groups as defined for A above;
wherein R3 may also represent a bridge, group with the group R4, said bridging group being selected from groups as defined for A above; and
X - is a monovalent anion or an n'th part of an n-valent anion.
一种去污力增强聚合物可用于洗衣清洁作业,以改善棉织物上油性和/或油脂性污垢的去除效果。这种聚合物是一种均聚物或共聚物,含有一个或多个独立选自式 (I) 的单体单元。
其中 -A- 选自式 -R5-、-R5-(CO)-R6-、-R5-(CO)-O-R6-、-R5-O-(CO)-R6-、-R5-(CO)-NH-R6-、-R5-NH-(CO)-R6- 的基团,其中 R5 和 R6 独立地不存在,或代表 C1-3 烷基;
R1、R2 和 R3 独立地选自氢、C1-3 烷基、C1-3 烯基、羟基-C1-3 烷基和 C5-8 环烷基;以及
R4 选自上文 A 所定义的基团;
其中 R3 还可以代表与基团 R4 搭桥的基团,所述搭桥基团选自如上文 A 所定义的基团;以及
X - 是一价阴离子或正价阴离子的第 n 部分。
Sterilization by treatment with reductant and oxidant.
申请人:B-K Medical ApS
公开号:EP2123308A1
公开(公告)日:2009-11-25
The present invention relates to the field of sterilization of items that are sensitive to e.g. temperature, pH, positive or negative pressure, radiation or oxidation. More particularly, the invention concerns a method, the use of this method and an apparatus for sterilization or disinfection, comprising the steps of contacting one or more item or part of an item with a water-based fluid comprising at least one reductant, followed by the step of contacting with a gas having oxidative properties in a substantially water-free environment. According to the invention, items can be sterilized that are otherwise impaired by conventional sterilization procedures, such as laboratory items, medical items, dental items, military items, biological items, and food processing-related items.
The present invention provides sulfoxide compounds comprising hydrophobic ester or amide moieties such that the compounds have surfactant properties. Also provided are methods for using the sulfoxide compounds or mixtures of the sulfoxide compounds in a variety of applications.