Method for the wet drawing of steel cables for reinforcing tires
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B21C-001/00
B21B-045/02
출원번호
US-0529885
(2008-03-06)
등록번호
US-8555689
(2013-10-15)
우선권정보
FR-07 01681 (2007-03-08)
국제출원번호
PCT/EP2008/001782
(2008-03-06)
§371/§102 date
20100322
(20100322)
국제공개번호
WO2008/113481
(2008-09-25)
발명자
/ 주소
Hollinger, Sébastien
Genin, Christelle
Monin, David
출원인 / 주소
Michelin Recherche et Technique S.A.
대리인 / 주소
Cozen O'Connor
인용정보
피인용 횟수 :
2인용 특허 :
10
초록▼
A process for the wet drawing of a steel wire intended for reinforcing a pneumatic tire. The process starts from a steel wire having a diameter greater than 0.6 mm. The wire is drawn through a series of dies of decreasing diameter, in the presence of a lubricant composition that is in the form of an
A process for the wet drawing of a steel wire intended for reinforcing a pneumatic tire. The process starts from a steel wire having a diameter greater than 0.6 mm. The wire is drawn through a series of dies of decreasing diameter, in the presence of a lubricant composition that is in the form of an aqueous dispersion, down to a predetermined final diameter of less than 0.5 mm. The aqueous dispersion comprises solid particles of an ester of a fatty acid comprising from 5 to 40 carbon atoms.
대표청구항▼
1. A process for the wet drawing of a steel wire intended for reinforcing a pneumatic tire, said process comprising the steps of: starting from a steel wire having a diameter greater than 0.6 mm; anddrawing said wire through a series of dies of decreasing diameter, in the presence of a lubricant com
1. A process for the wet drawing of a steel wire intended for reinforcing a pneumatic tire, said process comprising the steps of: starting from a steel wire having a diameter greater than 0.6 mm; anddrawing said wire through a series of dies of decreasing diameter, in the presence of a lubricant composition that is in the form of an aqueous dispersion, down to a predetermined final diameter of less than 0.5 mm,wherein said aqueous dispersion comprises solid particles of an ester of a fatty acid comprising from 5 to 40 carbon atoms,wherein the fatty acid ester corresponds to the formula: [R—COO—]x—A—[OH]y (I)in which R is a linear or branched, saturated or unsaturated hydrocarbon group, A is a hydrocarbon group, optionally interrupted by one or more heteroatoms, of valency x+y, x is an average number from 1 to 5, y is an average number from 0 to 5, and x+y varies from 1 to 10;wherein the ester is a diester corresponding to the formula: R1—CO—O—A—O—CO—R2 (II)in which R1 and R2, which are identical or different, are linear or branched, saturated or unsaturated hydrocarbon groups comprising from 4 to 39 carbon atoms; andwherein R1 and R2 comprise from 13 to 21 carbon atoms. 2. The process according to claim 1, wherein the fatty acid comprises from 6 to 24 carbon atoms, 3. The process according to claim 2, wherein the fatty acid comprises from 14 to 22 carbon atoms. 4. The process according to claim 1, wherein the fatty acid ester derives from a diol or from a polyol. 5. The process according to claim 1, wherein R1 and R2 comprise from 15 to 21 carbon atoms. 6. The process according to claim 1, wherein the divalent group A corresponds to the formula: —(CH2)z—[EO]m—[PO]m—(CH2)z′—in which: z and z′, which are identical or different, are integers from 1 to 10;EO is an optional ethylene oxide group;PO is an optional propylene oxide group;m and m′, which are identical or different, are average numbers within a range from 0 to 100. 7. The process according to claim 1, wherein the diester corresponds to the formula: R1—CO—O—(CH2)z″—O—CO—R2 (III)in which z″ is an integer from 1 to 10. 8. The process according to claim 1, wherein the diester corresponds to the formula: H3C—(CH2)n—CO—O—(CH2)z″—O—CO—(CH2)n′—CH3 (IV)in which: z″ is an integer from 1 to 4;n and n′, which are identical or different, are integers from 14 to 20. 9. The process according to claim 1, wherein A is an alkylene chosen from the group formed by methylene, ethylene, propylene and butylene groups and mixtures of these groups. 10. The process according to claim 8, wherein the diester is the ethylene glycol distearate of formula: H3C—(CH2)16—CO—O—(CH2)2—O—CO—(CH2)16—CH3 (V). 11. The process according to claim 1, wherein the aqueous dispersion comprises between 0.05 and 6% of ester particles (% by weight). 12. The process according to claim 1, wherein the ester particles have a particle size distribution with at least 90 wt % of the particles having a size between 0.1 and 50 μm. 13. The process according to claim 1, wherein the aqueous dispersion further comprises an amphiphilic compound. 14. The process according to claim 13, wherein the amphiphilic compound is a surfactant. 15. The process according to claim 14, wherein the surfactant is chosen from the group formed by anionic, cationic, amphoteric, zwitterionic and non-ionic surfactants and mixtures of such surfactants. 16. The process according to claim 15, wherein the surfactant is a non-ionic surfactant. 17. The process according to claim 16, wherein the non-ionic surfactant is chosen from the group formed by polyalkoxylated phenols, optionally polyalkoxylated C6-C22 fatty acids or alcohols, polyalkoxylated sorbitan esters, polyoxyalkylenated block polymers and mixtures of such compounds. 18. The process according to claim 17, wherein the surfactant is chosen from the group formed by ethylene oxide/C3-C10 alkylene oxide block copolymers, ethoxylated or propoxylated di- or tri-styrylphenols, fatty amines and mixtures of such compounds. 19. The process according to claim 18, wherein the surfactant is an ethylene oxide/C3-C10 alkylene oxide block copolymer. 20. The process according to claim 19, wherein the surfactant is a polyoxyethylene/polyoxypropylene block copolymer. 21. The process according to claim 20, wherein the block copolymer is a copolymer of structure [EO]p—[PO]p″—[EO]p′, where: EO is an ethylene oxide group; p and p′, which are identical or different, are average numbers within a range from 2 to 1000; andPO is an optional propylene oxide group; p″ is an average number within a range from 2 to 1000. 22. The process according to claim 13, wherein the weight ratio of the amphiphilic compound to the ester particles is between 1/100 and 10/100. 23. The process according to claim 1, wherein the aqueous dispersion further comprises an extreme pressure additive. 24. The process according to claim 23, wherein the extreme pressure additiveis chosen from the group formed by phosphate esters, phosphonates, sulphates, (poly)sulphides and mixtures of these compounds. 25. The process according to claim 24, wherein the extreme pressure additive is a phosphate ester. 26. The process according to claim 23, wherein the aqueous dispersion comprises between 0.01% and 5% of the extreme pressure additive (% by weight).
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이 특허에 인용된 특허 (10)
Deruyck Frank (Ghent BEX) Coppens Wilfried (Kortrijk BEX), Additive for lubricants containing a metal complex.
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