paragon
发表于 2025-3-25 05:41:21
Surfactants commercially available,ies, and in the right price range. Directories giving details of which specific products are available do exist (see Chapter 3); Chapters 6–11 do not attempt to replace these sources of information. Most directories will have considerable detail on where to find products, trade names, approximate co
geometrician
发表于 2025-3-25 10:12:47
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gnarled
发表于 2025-3-25 11:54:53
Amphoterics,ionic) group. Sometimes the phrase ampholytic is used. The nomenclature of some amphoterics has been confused in the past, partly due to mistakes in the original chemical structures, and, more recently, due to retention of the word betaine for products which are strictly not amphoteric. The main cat
下船
发表于 2025-3-25 17:43:44
Speciality surfactants, the world. They have been grouped together on the basis of a common chemical structure. Within these groupings there are hundreds of speciality surfactants. What is a speciality surfactant? The author’s definition of a speciality surfactant is one that is different in properties and use to the majo
索赔
发表于 2025-3-25 23:02:22
Polymeric surfactants,ymers (see Section 7.9) and silicone surfactants (Section 10.2) could be looked upon as polymeric surfactants. Polyacrylic acid of low molecular weight (< 15,000), condensates of naphthalene sulphonate with formaldehyde and sulphonated styrene/maleic anhydride co-polymers are often included in descr
condemn
发表于 2025-3-26 01:54:04
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说不出
发表于 2025-3-26 07:49:04
M. R. Porter BSc, PhD, CChem, MRSCto the third world its development model. In the particular case of African Portuguese speaking countries, China strategy takes advantage of a common denominator between those countries and a Chinese territory that was formerly under Portuguese administration: Macau..
使害怕
发表于 2025-3-26 10:30:01
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ILEUM
发表于 2025-3-26 16:17:30
he volume consumed, whereas the remaining 20% is made up of approximately 40 different chemical types. Commercially produced surface active agents are not pure chemicals, and within each chemical type there can be tremendous variation. Technical staff who are not familiar with surfactants are freque
Glutinous
发表于 2025-3-26 16:49:47
d, and as a series of technologies that are capable of imitating nature while also going beyond it and solving problems nature cannot. These framings help make assisted reproduction a usable commodity.