摘要:
Fine-particle solids suspensions can be dewatered by a process in which dialkyl carbonates corresponding to formula (I) ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent alkyl and/or alkenyl groups containing 1 to 22 carbon atoms andm and n independently of one another stand for 0 or numbers of 1 to 10,are used as auxiliaries. The auxiliaries are readily biodegradable, extremely low-foaming and are distinguished by a low solidification point.
摘要:
Fatty alcohol polyglycol ethers terminally blocked by hydrophobic radicals are used as co-collectors together with cationic or ampholytic surfactant components in the flotation of non-sulfidic ores.
摘要:
A low-foaming surfactant composition comprising: (a) a hydroxy mixed ether corresponding to formula I: R1O[CH2CH(CH3)O]x(CH2CHR2O)y[CH2CH(OH)R3]z, (I) wherein R1 is an alkyl and/or alkylene group containing from 4 to 18 carbon atoms, R2 is hydrogen, R3 is an alkyl group having from 2 to 22 carbon atoms, x is 0, y is a number from 1 to 30, and z is a number from 1 to 3; and (b) a low-foaming nonionic surfactant selected from the group consisting of an optionally end-capped fatty alcohol polyethylene glycol/polypropylene glycol ether corresponding to formula II: R4O(CH2CH2O)n[CH2(CH3)CHO]mR5 (II) wherein R4 is an alkyl and/or alkylene group containing from 8 to 22 carbon atoms, R5 is hydrogen or an alkyl group containing from 1 to 8 carbon atoms, n is a number from 1 to 15 and m is a number up to 10, an optionally end-capped fatty alcohol polypropylene glycol/polyethylene glycol ether corresponding to formula II: R6O[CH2(CH3)CHO]p(CH2CH2O)qR7 (III) wherein R6 is an alkyl and/or alkylene group having from 8 to 22 carbon atoms, R7 is hydrogen or an alkyl group having from 1 to 8 carbon atoms, p is a number from 1 to 5, and q is a number up to 15, and mixtures thereof.
摘要:
Multipurpose cleaners are comprised of an alkoxylated carboxylic acid ester corresponding to the formula (I): wherein R1CO is an aliphatic acyl group, AlkO is CH2CH2O, CHCH3CH2O, CH2CHCH3O, or a combination thereof, n is a number from 1 to 20 and R2 is an aliphatic alkyl group, and a betaine, an amine oxide or a combination thereof.
摘要:
Iron ore concentrates can be obtained by the flotation of iron ores providing mixtures containing at least one ether canine of formula (I):R.sup.1 O--(C.sub.n H.sub.2n).sub.y --NH--(C.sub.m H.sub.2m --NH).sub.x H,in which R.sup.1 is a linear or branched chain aliphatic hydrocarbon moiety having 6 to 22 carbon atoms and 0, 1, 2 or 3 double bonds; n and m independently of one another represent the number 1, 2 or 3; x=0 or the number 1, 2 or 3; and y=2 or 3, and at least one other anionic and/or nonionic collector.
摘要:
The invention relates to adducts of phosphinic acid with maleic acid semiesters and salts thereof corresponding to the following general formula ##STR1## in which R.sup.1 is hydrogen or a methyl group,R.sup.2 is a linear or branched, optionally hydroxyl substituted C.sub.8 -C.sub.18 alkyl or cycloalkyl group or an aryl group corresponding to the formula ##STR2## in which R.sup.3 and R.sup.4 may be the same or different and are hydrogen or a linear or branched unsubstituted C.sub.7 -C.sub.12 alkyl group,M is H, Na, K or NH.sub.4,m is an integer of from 1 to 8, andn is 1 or 2.The invention also relates to a process for production of the adducts and to their use for the flotation of non-sulfidic minerals.
摘要:
A rinse aid composition containing: (a) a hydroxy mixed ether corresponding to formula I: R1O[CH2CHR2O]x[CH2CHR3O]yCH2CH(OH)R4 (I) wherein R1 is an alkyl and/or alkenyl group containing from about 4 to 22 carbon atoms, R2 is hydrogen or a methyl or an ethyl group, R3 is hydrogen or a methyl or an ethyl group, R4 is an alkyl group containing from about 2 to 22 carbon atoms, x is a number up to 30, y is a number up to 30, and x+y is greater than or equal to 1; (b) an alkyl and/or alkenyl oligoglycoside corresponding to formula II: R5O—[G]p (II) wherein R5 is an alkyl and/or alkenyl group containing from about 4 to 22 carbon atoms, G is a sugar unit containing 5 or 6 carbon atoms, and p is a number from 1 to 10; and (c) a nonionic co-surfactant, and wherein (a) and (b) are present in the composition in a ratio by weight of from about 10:0.1 to 1:10.
摘要:
Gel compositions comprising a thickener and a surfactant component including an alkoxylated carboxylic acid ester corresponding to general formula (I): wherein R1C(O) represents an aliphatic acyl group, each AlkO independently represents an alkoxylate selected from the group consisting of CH2CH2O, CHCH3CH2O and CH2CHCH3O, n is a number of from 1 to 20, and R2 represents an aliphatic alkyl group, are described. The use of such gel compositions in methods of providing controlled release of cleaning agents to toilets is also described, in addition to the containers used in such methods.
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:
The use of mixed hydroxyethers of the general formula IR.sup.1 O--(CH.sub.2 CH.sub.2 O).sub.x --CH.sub.2 --CH(OH)R.sup.2 (I)in whichR.sup.1 denotes an alkyl group having 1 to 10 carbon atomsR.sup.2 denotes an alkyl group having 8 to 20 carbon atoms and x denotes a number in the range from 1 to 20 as auxiliaries for the dehydration of water-containing finely divided solids, gives solids having a low water content without foaming in the water separated therefrom.