摘要:
Microbial growth in an aqueous system containing borohydride residues is controlled by adding an aldehyde or aldehyde source, followed by adding an active halogen biocide. The active halogen biocide is preferably stabilized by an N-hydrogen compound.
摘要:
Novel aluminum antiperspirant compositions of enhanced efficacy activated by both heat and acid are produced comprising basic aluminum salts of having the formula: Al2(OH)6-aXa wherein X is Cl−, Br−, l−, or NO3−, a is from abut 1.1 to about 1.7, with basic aluminum chloride being the preferred salt. When analyzed by SEC-HPLC at about 10% concentration (i.e., by 2% Al) in water, these compositions exhibit an SEC-HPLC Band I area of less than 10%, a Band III area of at least 20%, with a Band III/II area ratio of at least 0.7, a Band IV area of at least 20%, and have at least 60% aluminum species contained in Bands III and Band IV.
摘要翻译:产生由热和酸热活化的增强功效的新型铝止汗剂组合物,其包含具有下列通式的碱式铝盐:<?in-line-formula description =“In-line Formulas”end =“lead”?> (OH)6-a X a <βin-line-formula description =“In-line Formulas”end =“tail”?>其中 X是Cl - , - , - , - , - , - , - ,a为约1.1至约1.7,碱性氯化铝为优选的盐。 当通过SEC-HPLC在水中以约10%浓度(即,2%Al)分析时,这些组合物显示小于10%的SEC-HPLC带I面积,至少20%的Band III面积,其中a Band III / II面积比至少为0.7,Band IV面积至少为20%,并且在III组和Band IV中含有至少60%的铝种类。
摘要:
A process is provided for the preparation of a novel polyaluminum calcium hydroxychloride composition of enhanced efficiency for water treatment, paper sizing, and antiperspirant applications. The polyaluminum calcium hydroxychloride compositions are prepared via the acidification of higher basicity reaction products to form mid-to-high basicity final products. Two methods are provided for the preparation of higher basicity products, contemplated in the first, and an aqueous acid solution, such as hydrochloric acid, aluminum chloride, or a mixture thereof, is mixed with a strong alkaline calcium salt such as calcium oxide or calcium carbonate and aluminum powder at temperatures greater than 60° C. In a second method, bauxite, aluminum hydrate, or aluminum metal, and calcium aluminate are mixed with hydrochloric acid and are reacted at high temperatures and/or elevated pressures for a certain period of time whereby, when the reaction is complete, the mixtures are filtered to obtain clear solutions. The final PAC-Ca solutions may be dried to powder to have a wide range of basicities from about 40% to about 80%. At lower basicities, the polyaluminum calcium hydroxychloride sales are used preferably as antiperspirants, while at higher basicities, the solutions are used preferably as water treatment chemicals.
摘要:
The present disclosure is generally directed to an open time additive composition that includes at least two, different open time additives having the structure of Compound I, a salt thereof, or both. Compound I having the following formula:
摘要:
The present disclosure is generally directed to an architectural paint that includes an open time additive having the structure of Compound I, a salt thereof, or both. Compound I having the following formula:
摘要:
The production of polyaluminum hydroxychlorosulfates (PACS) suitable for effective use as flocculants and coagulants in water treatment is described. The product is a fluid, clear solution that is stable with respect to precipitation and gelling for extended periods of time. Key features of the process include: i) the production of a PACS solution of about 12-16% Al2O3 and about 40-60% basicity at moderate temperatures (50-60° C.) using a zerovalent aluminum source, such as aluminum powder, ii) the addition of an alkali metal or alkali earth metal base at low temperatures (20-30° C.) to produce PACS products ranging from 9-12% Al2O3 with basicities ranging from 70-80%, iii) the addition of an alkali metal base at low temperatures without the use of high shear mixing, iv) a PACS product that does not contain significant amounts of the Al13-mer Keggin complex , v) a product with greater than 80-95% of the aluminum polymers bimodally distributed in the range of 20,000-40,000 Daltons and 135-750 Daltons, and vi) the formation a PACS whereby greater than 95% of the sulfate is bound to aluminum and is contained in the aluminum polymers distributed in the range of 20,000-40,000 Daltons.
摘要翻译:描述了适用于在水处理中有效用作絮凝剂和凝结剂的聚羟基氯代硫酸氢铝(PACS)的生产。 该产品是一种液体,透明的溶液,对于沉淀和胶凝长时间稳定。 该方法的主要特征包括:i)在中等温度下生产约12-16%的Al 2 O 3 3和约40-60%碱度的PACS溶液( 50-60℃),使用诸如铝粉末的零价铝源,ii)在低温(20-30℃)下加入碱金属或碱土金属碱以产生范围为9- 12%的Al 2 O 3,其碱度范围为70-80%,iii)在低温下加入碱金属碱而不使用高剪切混合,iv )不含显着量的Al 13+ Keggin络合物的PACS产物,v)具有大于80-95%双峰分布在20,000-40,000范围内的铝聚合物的产物 道尔顿和135-750道尔顿,以及vi)形成PACS,其中大于95%的硫酸盐与铝结合并且包含在分布在20,000-40,000道尔顿范围内的铝聚合物中。
摘要:
Microbial growth in an aqueous system containing borohydride residues is controlled by adding an aldehyde or aldehyde source, followed by adding an active halogen biocide. The active halogen biocide is preferably stabilized by an N-hydrogen compound.
摘要:
A stain resistant additive is disclosed for adding to all different types of coating compositions including paints. The stain resistant additive can be in the form of particles and can be non-polymeric. The stain resistant additive can be an acetoacetate derivative complexed with a metal, such as zinc.