摘要:
The present invention relates to the use of dendrimers with monophosphonic or bisphosphonic terminations in order to stimulate the growth of cell cultures or to activate cells in culture.
摘要:
Unwanted natural and synthetic organic impurities are removed from liquid media contaminated therewith, e.g., liquids and beverages intended for human consumption, or industrial/wastewaters, by introducing into such media a thus effective amount of an optionally modified/insoluble cationic vegetable gum containing one or more cationic or cationizable substituents, maintaining the cationic vegetable gum in such liquid medium until the organic impurities are sorbed thereon, and thence recovering the vegetable gum/sorbed impurities therefrom, whereby purifying the liquid medium.
摘要:
The scale inhibitors in a variety of aqueous systems, or a part or sample thereof, also including one or more dissolved interfering ions, are separated therefrom and analyzed, such scale inhibitors comprising a polymer containing at least one anionic functional group, e.g., a strong acid functional group or a phosphonate or phosphate ester, and such analysis including treating these aqueous systems with a cationic substrate or a free cation.
摘要:
Mixtures of three types of linear, branched or cyclic phosphates are useful flame retardants, especially for thermoplastic resins or as functional additives in polymer matrices.
摘要:
A phosphonium compound embedded in a matrix substrate wherein the phosphonium compound is selected from a group consisting of tris(hydroxyorgano)phosphine (THP), a THP+ salt (tetrakis(hydroxyorgano)phosphonium salt) or a condensate of THP and a nitrogen containing compound. The compound may be used to reduce the number of microorganisms in industrial systems and may also be used to reduce iron carbonate or iron, lead and zinc scale deposits.
摘要:
Bisphosphines are prepared by reacting a phosphine with a dihalide in the presence of an acid; characteristically, bisphosphonium compounds are initially formed and then converted into the bisphosphines.