# US 5,350,529 A · Low fume finish for wet air-jet texturing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,350,529 A - Document ID: US5350529A - Status: Granted - Kind: A - Application number: 07/937,253 - Filed: 1992-08-28 - Granted: 1994-09-27 - Earliest claimed: 1992-08-28 - Assignees: E. I. Du Pont de Nemours and Company - Inventors: Fleming H. Day - Web page: https://patentgrep.com/patent/US5350529A ## CPC - D06M 15/53: Polyethers (polyacetals D06M15/39) - D02G 1/164: {in the presence of a liquid, e.g. a crimp finish} - D06M 7/00: {Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins (D06M10/00 takes precedence; treating fibres or filaments made of glass, mineral -, or slag wool C03C; carbon fibres D01F11/10)} - D06M 13/224: Esters of carboxylic acids; Esters of carbonic acid - D06M 13/2243: {Mono-, di-, or triglycerides} - D06M 13/256: Sulfonated compounds {esters thereof, e.g. sultones} - D06M 2200/40: Reduced friction resistance, lubricant properties; Sizing compositions - Y10T 428/2969: Polyamide, polyimide or polyester - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS - D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A lubricating finish composition suitable for application as a water emulsion to synthetic filaments and synthetic filaments coated with the composition. The composition of the invention comprises: about 60 to about 98.9 weight percent nonionic emulsifier having a melting point less than about 25.degree. C.; about 1 to about 39.9 weight percent lubricant having at least 29 carbon atoms and a melting point less than about 25.degree. C.; and about 0.1 to about 15 weight percent anionic surfactant. ## Claims ### Claim 1 A lubricating finish composition comprising: 65 to about 98.9 weight percent nonionic emulsifier selected from the class consisting of polyoxyalkylene condensation products having a lipophilic portion derived from an alcohol or a carboxylic acid, said emulsifier having a number average molecular weight of at least about 600 amu and a melting point less than about 25.degree. C.; about 1 to about 39.9 weight percent lubricant selected from the class consisting of natural and synthetic esters having a number average molecular weight of at least about 450 amu, said lubricant having at least 29 carbon atoms and a melting point less than 25.degree. C.; and 0.1 to about 15 weight percent anionic surfactant selected from the class consisting of alkali metal salts of a sulfonated dicarboxylic acid ester. ### Claim 2 (depends on 1) The finish composition of claim 1 wherein said finish composition has an acid value of less than about 8. ### Claim 3 (depends on 1) The finish composition of claim 1 wherein said finish composition has an acid value of less than about 4. ### Claim 4 (depends on 1) The finish composition of claim 1 wherein said composition comprises 65 to about 95 weight percent of said nonionic emulsifier. ### Claim 5 (depends on 1) The finish composition of claim 1 wherein said nonionic emulsifier is selected from the class consisting of polyoxyalkylene condensation products of natural and synthetic aliphatic monohydric alcohols and natural and synthetic aliphatic monobasic carboxylic acids. ### Claim 6 (depends on 1) The finish composition of claim 1 wherein said anionic surfactant is selected from the group consisting of alkali metal salts of a dialkyl sulfosuccinic acid. ### Claim 7 (depends on 9) The finish composition of claim 9 wherein said anionic surfactant is selected from the class consisting of sodium di-2-ethylhexyl sulfosuccinate and potassium di-2-ethylhexyl sulfosuccinate. ### Claim 8 A synthetic filament coated with a finish composition comprising: 65 to about 98.9 weight percent nonionic emulsifier selected from the class consisting of polyoxyalkylene condensation products having a lipophilic portion derived from an alcohol or a carboxylic acid, said emulsifier having a melting point less than about 25.degree. C.; about 1 to about 39.9 weight percent lubricant selected from the class consisting of natural and synthetic esters having a number average molecular weight of at least about 450 amu, said lubricant having at least 29 carbon atoms and a melting point less than 25.degree. C.; and 0.1 to about 15 weight percent anionic surfactant selected from the class consisting of alkali metal salts of a sulfonated dicarboxylic acid ester. ### Claim 9 (depends on 1) The synthetic filament of claim 1 wherein said finish composition has an acid value of less than about 8. ### Claim 10 (depends on 9) The synthetic filament of claim 9 wherein said finish composition has an acid value of less than about 4. ### Claim 11 (depends on 8) The synthetic filament of claim 8 wherein said composition comprises 65 to about 95 weight percent of said nonionic emulsifier. ### Claim 12 (depends on 8) The synthetic filament of claim 8 wherein said nonionic emulsifier is selected from the class consisting of polyoxyalkylene condensation products of natural and synthetic aliphatic monohydric alcohols and natural and synthetic aliphatic monobasic carboxylic acids. ### Claim 13 (depends on 8) The synthetic filament of claim 8 wherein said anionic surfactant is selected from the group consisting of alkali metal salts of a dialkyl sulfosuccinic acid. ### Claim 14 (depends on 13) The synthetic filament of claim 13 wherein said anionic surfactant is selected from the class consisting of sodium di-2-ethylhexyl sulfosuccinate and potassium di-2-ethylhexyl sulfosuccinate. ### Claim 15 (depends on 8) The synthetic filament of claim 8 wherein said filament is comprised of a polymer selected from the class consisting of polyamide homopolymers and copolymers and polyester homopolymers and copolymers.