摘要:
A method of controlling or preventing foam in an aqueous system is provided, wherein an effective amount of an alkoxylated, epoxidized fatty compound that has been ring-opened with a nucleophile is determined and added to the system. After ring opening with the nucleophile, the epoxidized fatty compound is alkoxylated with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide.
摘要:
A process for controlling the deposition of stickies from paper stock suspensions during papermaking by adding to the paper stock suspensions from 0.001% to 5.0% by weight based on the weight of fibrous paper stock, of alkoxylation products obtained by reaction of alkylene oxides with C.sub.10-22 carboxylic acid derivatives or C.sub.10-22 carboxylic acids containing functional groups with at least one OH group in the 9, 10, 13 or 14 position.
摘要:
The invention relates to the use of compounds containing polyether chains prepared by reaction of epoxidized C.sub.10-22 carboxylic acid derivatives with polyalkylene glycols having average molecular weights of 100 to 2,000 and/or certain alkoxylated aliphatic compounds for the removal of printing inks from printed wastepaper and/or paper circuit waters.
摘要:
Finely divided solids suspensions can be dewatered by adding to the solids suspension a mixed hydroxy ether of the formula ##STR1## wherein R.sup.1 is a linear hydroxy alkyl group containing from 2 to 16 carbon atoms with the hydroxyl group on the carbon atom adjacent to the carbon atom with the ether linkage and R.sup.2 is a linear alkyl group with 1 to 15 carbon atoms with the proviso that the sum of the total carbon atoms in R.sup.1 and R.sup.2 is 5 to 17, R.sup.3 is a linear or branched alkyl group with 1 to 12 carbon atoms and n is a number of from 1 to 20. The mixed hydroxy ethers are readily biodegradable, generate very little foam and have a low solidification point.
摘要:
A process for removing printing inks from printed wastepaper in the presence of a deinking chemical is provided. In this process printed wastepaper is disintegrated to form a paper stock suspension and the detached printing ink particles are removed in known manner by flotation or washing in another stage. In this process, alkoxylates of blown oils are used as the deinking chemical. The deinking chemical is added during disintegration and/or before the flotation or washing step. Preferably, the printed wastepaper is disintegrated in the presence of 0.02 to 2% by weight and preferably 0.1 to 0.8% by weight, based on air-dry paper stock, of alkoxylates of blown oils. This deinking chemical also removed printing inks from paper circuit waters.
摘要:
According to the invention, wastepaper is refined in the presence of alkoxylation products obtainable by reaction of alkylene oxides with C.sub.10-22 carboxylic acid derivatives and/or C.sub.10-22 carboxylic acids containing carboxylic acid residues with at least one OH group in the 9, 10, 13 and/or 14 position and the detached printing ink particles are subsequently removed from the paper stock suspensions by flotation or washing.
摘要:
The present invention relates to a thermoplastic composition containing a) a thermoplastic polymer, b) a mold release agent, and c) optionally further additives, wherein the mold release agent contains a hydroxycarboxylic acid; an ester of a hydroxycarboxylic acid or a derivative of a hydroxycarboxylic acid, and one or more of an alcohol having one or more hydroxyl groups, or a compound having one or more epoxide groups, or a compound having one or more keto groups, or a mixture of a hydroxycarboxylic acid and the ester of a hydroxycarboxylic acid or a derivative of a hydroxycarboxylic acid and one or more of an alcohol having one or more hydroxyl groups or a compound having one or more epoxide groups or a compound having one or more keto groups.
摘要:
The present invention relates to a thermoplastic composition containing a) a thermoplastic polymer, b) a mold release agent, and c) optionally further additives, wherein the mold release agent contains a hydroxycarboxylic acid; an ester of a hydroxycarboxylic acid or a derivative of a hydroxycarboxylic acid, and one or more of an alcohol having one or more hydroxyl groups, or a compound having one or more epoxide groups, or a compound having one or more keto groups, or a mixture of a hydroxycarboxylic acid and the ester of a hydroxycarboxylic acid or a derivative of a hydroxycarboxylic acid and one or more of an alcohol having one or more hydroxyl groups or a compound having one or more epoxide groups or a compound having one or more keto groups.
摘要:
A process for the production of cellulose/plastic composites, characterized in that cellulose, more particularly wood, a plastic, more particularly polyvinyl chloride, a compatibilizer containing carboxylic anhydride groups, and a catalyst from the group of heteroaromatic compounds are combined, mixed together, preferably at a temperature in the range from 50° to 130° C., and the dry blend obtained is subsequently heated to a temperature above the melting temperature of the plastic, subjected to the desired shaping process, and allowed to cool.
摘要:
A method of preparing a modified cationic layer compound which includes providing a layer compound of the general formula (I): [EeZzDdVv(OH−)x](An−)a.qH2O (I) wherein E represents one or more monovalent alkali metal cations, e represents a number of from 0 to about 2, Z represents one or more divalent metal cations, z represents a number of from 0 to about 6, D represents one or more trivalent metal cations, d represents a number of from 0 to about 3, V represents one or more tetravalent metal cations, v represents a number of from 0 to about 1, (An−) represents an acid anion wherein n represents an integer of from 1 to 3, q represents a number of from about 1 to about 10, and wherein x>a and e+2z+3d+4v=x+na; subjecting the layer compound to crystallization to provide a resultant material; and subjecting the resultant material to steam drying at a temperature of from about 200° C. to about 260° C. for a period of time of from about 3 to about 6 hours, said steam drying comprising passing a source of steam continuously over the resultant material at a rate of from about 0.001 to about 10 moles of water per hour, per kilogram of the resultant material; is described. Cationic layer compounds made by the disclosed process, and uses therefor, are also described.
摘要翻译:一种制备改性阳离子层化合物的方法,其包括提供通式(I)的层化合物:其中E表示一个或多个一价碱金属阳离子,e表示0至约2的数,Z表示一个或多个 二价金属阳离子,z表示0至约6的数,D表示一种或多种三价金属阳离子,d表示0至约3的数,V表示一种或多种四价金属阳离子,v表示 0至约1,(An-)表示酸阴离子,其中n表示1至3的整数,q表示约1至约10的数,并且其中x> a和e + 2z + 3d + 4v = x + na; 使层化合物进行结晶以提供所得材料; 并将所得材料在约200℃至约260℃的温度下蒸汽干燥约3至约6小时的时间段,所述蒸汽干燥包括将蒸汽源连续地通过所述蒸汽源 每千克所得材料以约0.001至约10摩尔水/小时的速率获得所得材料; 被描述。 还描述了通过公开的方法制备的阳离子层化合物及其用途。