# US 5,705,473 A · Nonionic powdery detergent composition containing an aluminosilicate builder and a silicon-containing oil absorbing carrier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,705,473 A - Document ID: US5705473A - Status: Granted - Kind: A - Application number: 08/232,468 - Filed: 1994-04-22 - Granted: 1998-01-06 - Earliest claimed: 1990-09-28 - Assignees: Kao Corporation - Inventors: Mutsumi Kuroda; Hiroshi Ohtsuka; Hiroyuki Yamashita; Mikio Sakaguchi; Hiroyuki Kondo; Kouichi Hatano; Fumio Sai - Web page: https://patentgrep.com/patent/US5705473A ## CPC - C11D 3/128: {Aluminium silicates, e.g. zeolites (C11D3/1253 takes precedence)} - C11D 1/66: Non-ionic compounds {(C11D1/002, C11D1/004, C11D1/008 take precedence)} - C11D 1/72: Ethers of polyoxyalkylene glycols - C11D 3/124: {Silicon containing, e.g. silica, silex, quartz or glass beads} - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL ## Abstract To provide a nonionic powdery detergent free from oozing of a liquid nonionic surfactant at ambient temperature and having excellent powder fluidity and non-caking properties and a solubility which is not deteriorated with time. The nonionic powdery detergent composition comprises (a) 12 to 35% by weight of a nonionic surfactant having a melting point of not higher than 40.degree. C. and an HLB in the range of 9.0 to 16.0, (b) 10 to 60% by weight of a crystalline aluminosilicate and (c) 5 to 20% by weight of an amorphous oil-absorbing carrier containing at least 30% by weight of silicon (in terms of SiO.sub.2) versus the weight of said carrier in an anhydrous state and having an oil-absorbing capacity of at least 80 ml/100 g, said carrier giving a dispersion with a pH of at least 9 or being soluble in a 2% aqueous NaOH solution in an amount of 0.5 g or below. ## Claims ### Claim 1 A nonionic powder detergent composition comprising (a) 12 to 35% by weight of a polyoxyethylene alkyl ether having 10 to 20 carbon atoms and an average molar number of added ethylene oxide of 5 to 15, (b) 10 to 60% by weight of a crystalline aluminosilicate, (c) 5 to 20% by weight of an amorphous oil-absorbing carrier selected from the group consisting of silica and aluminosilicates (c-1) containing at least 30% by weight of silicon in terms of SiO.sub.2, (c-2) having an oil-absorbing capacity of at least 80 ml/100 g, said carrier (c-3) giving a dispersion with a pH value of at least 9 or being soluble in a 2% aqueous NaOH solution in an amount of 0.5 g or less and (d) below 5% by weight of sodium silicate, obtained by a process comprising the steps of: mixing a portion of (b) said crystalline aluminosilicate, (c) said amorphous oil-absorbing carrier and optionally (d) said sodium silicate; adding (a) said liquid nonionic surfactant gradually during said mixing step, to obtain a homogenous mixture of (a), (b), (c) and optionally (d); and adding the remaining of (b) crystalline aluminosilicate to obtain said nonionic powder detergent. ### Claim 2 (depends on 1) The nonionic powdery detergent composition according to claim 1, further comprising 5 to 35% by weight of sodium carbonate. ### Claim 3 (depends on 1) The nonionic powdery detergent composition according to claim 1, wherein the amorphous oil-absorbing carrier is amorphous silica. ### Claim 4 (depends on 1) The nonionic powdery detergent composition according to claim 1, which comprises 12 to 35 wt. % of (a), 20 to 60 wt. % of (b) and 5 to 20 wt. % of (c) an oil-absorbing carrier (c-1) containing at least 40 wt. % of silicon in terms of SiO.sub.2 (c-2) having an oil-absorbing capacity of at least 150 ml/100 g, said carrier (c-3) giving a dispersion with a pH value of at least 9. ### Claim 5 (depends on 1) The nonionic powdery detergent composition according to claim 1, wherein the amorphous oil-absorbing carrier is an amorphous aluminosilicate. ### Claim 6 (depends on 5) The nonionic powdery detergent composition according to claim 5, wherein the amorphous aluminosilicate is one represented by the following general formula (1): a(M.sub.2 O).Al.sub.2 O.sub.3.b(SiO.sub.2).c(H.sub.2 O) (1) wherein M represents an alkali metal atom and a, b and c each represent the molar number of the respective components which are as follows: 0.7.ltoreq.a.ltoreq.2.0, 0.8.ltoreq.b<4 and c is an arbitrary positive number. ### Claim 7 (depends on 1) The nonionic powdery detergent product comprising a nonionic powdery detergent composition according to claim 1, packed in a container made of converted paper laminated with a polymer having a solubility parameter value in the range of 7.5 to 11.5 ›cal/cm.sup.3 !.sup.1/2 and lower than the HLB value of the nonionic surfactant used, and selected from the group consisting of polyethylene and polypropylene. ### Claim 8 (depends on 1) The nonionic powdery detergent composition according to claim 1, further comprising 1 to 5% by weight of a polyethylene glycol having a molecular weight of 4000 to 20000. ### Claim 9 (depends on 1) The nonionic powdery detergent composition according to claim 1, which comprises 12 to 35 wt. % of (a), 20 to 60 wt. % of (b) and 5 to 20 wt. % of (c) an oil-absorbing carrier (c-1) containing at least 40 wt. % of silicon in terms of SiO.sub.2, (c-2) having an oil-absorbing capacity of at least 80 ml/100 g, said carrier (c-3) being soluble in a 2% NaOH solution in an amount of 0.5 g or less. ### Claim 10 (depends on 1) The nonionic powdery detergent composition according to claim 1, which is substantially free from any phosphate builder. ### Claim 11 (depends on 1) The nonionic powdery detergent composition according to claim 1, which has a bulk density of 0.6 to 1.2 g/cm.sup.3 and an average particle diameter of 200 to 1000 .mu.. ### Claim 12 (depends on 1) The nonionic powder detergent composition according to claim 1, which comprises 12 to 35 wt. % of (a), 20 to 60 wt. % of (b) and 5 to 20 wt. % of (c) a non-crystalline aluminosilicate (c-2) having an oil-absorbing capacity of at least 200 ml/100 g, said carrier (c-3) being soluble in a 2% aqueous NaOH solution in an amount of 0.05 g or less. ### Claim 13 (depends on 1) The non-ionic powder detergent according to claim 1, wherein said (b) crystalline aluminosilicate is represented by the following formula (3): x(M.sub.2 O).cndot.Al.sub.2 O.sub.3 .cndot.y(SiO.sub.2).cndot.w(H.sub.2 O)(3) wherein M represents an alkali metal atom and x, y and w each represent a molar number of the respective components which are as follows: 0.7.ltoreq.x.ltoreq.1.5; 0.8.ltoreq.y.ltoreq.6; and w is an arbitrary positive number. ### Claim 14 A process for producing a nonionic powder detergent composition, which comprises the steps of mixing (b) a crystalline aluminosilicate with (c) an oil-absorbing carrier, while adding to or spraying onto the mixture (a) a liquid nonionic surfactant gradually to obtain a homogeneous mixture of (a), (b) and (c) and then adding to the mixture further crystalline aluminosilicate to obtain a powder detergent composition. ### Claim 15 A nonionic powder detergent composition comprising (a) 12 to 35% by weight of a polyoxyethylene alkyl ether having 10 to 20 carbon atoms, an average molar number of added ethylene oxide of 5 to 15 and a melting point of not higher than 40.degree. C., (b) 10 to 60% by weight of a crystalline aluminosilicate, (c) 5 to 20% by weight of an amorphous oil-absorbing carrier selected from the group consisting of silica and aluminosilicates (c-1) containing at least 30% by weight of silicon in terms of SiO.sub.2, (c-2) having an oil-absorbing capacity of at least 80 ml/100 g, said carrier (c-3) giving a dispersion with a pH value of at least 9 or being soluble in a 2% aqueous NaOH solution in an amount of 0.5 g or less and (d) below 5% by weight of sodium silicate, obtained by a process comprising the steps of: mixing a portion of (b) said crystalline aluminosilicate, (c) said amorphous oil-absorbing carrier and optionally (d) said sodium silicate; adding (a) said liquid nonionic surfactant gradually during said mixing step, to obtain a homogenous mixture of (a), (b), (c) and (d); and adding the remaining of (b) crystalline aluminosilicate to obtain said nonionic powder detergent. ### Claim 16 A nonionic powder detergent composition comprising (a) 12 to 35% by weight of a liquid nonionic surfactant, (b) 10 to 60% by weight of a crystalline aluminosilicate, (c) 5 to 20% by weight of an amorphous oil-absorbing carrier selected from the group consisting of silica and aluminosilicates (c-1) containing at least 30% by weight of silicon in terms of SiO.sub.2, (c-2) having an oil-absorbing capacity of at least 80 ml/100 g, said carrier (c-3) giving a dispersion with a pH value of at least 9 or being soluble in a 2% aqueous NaOH solution in an amount of 0.5 g or less and (d) below 5% by weight of sodium silicate obtained by a process comprising the steps of: mixing a portion of (b) said crystalline aluminosilicate, (c) said amorphous oil-absorbing carrier and optionally (d) said sodium silicate; adding (a) said liquid nonionic surfactant gradually during said mixing step, to obtain a homogenous mixture of (a), (b), (c) and optionally (d); and adding the remaining of optionally (b) crystalline aluminosilicate to obtain said nonionic powder detergent.