Source: http://www.google.com/patents/US4761241?dq=7,117,286
Timestamp: 2016-07-01 17:50:32
Document Index: 62551991

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Patent US4761241 - Oily lubricant for cold plastic processing of metallic material - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsAn oil lubricant for cold plastic processing of metallic material obtained by compounding either one or both types of polymers of 2-ethyl polyacrylate-hexyl ester and polymethacrylic acid lauryl ester with one or two types of oiliness improvers selected from the group consisting of refined lard, oleic...http://www.google.com/patents/US4761241?utm_source=gb-gplus-sharePatent US4761241 - Oily lubricant for cold plastic processing of metallic materialAdvanced Patent SearchPublication numberUS4761241 APublication typeGrantApplication numberUS 06/894,660Publication dateAug 2, 1988Filing dateAug 8, 1986Priority dateApr 14, 1986Fee statusLapsedAlso published asDE3780498D1, DE3780498T2, EP0242040A2, EP0242040A3, EP0242040B1Publication number06894660, 894660, US 4761241 A, US 4761241A, US-A-4761241, US4761241 A, US4761241AInventorsTakeshi Kobori, Shigeki KimuraOriginal AssigneeNihon Kousakuyu Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (11), Referenced by (5), Classifications (57), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetOily lubricant for cold plastic processing of metallic material
US 4761241 AAbstract
An oil lubricant for cold plastic processing of metallic material obtained by compounding either one or both types of polymers of 2-ethyl polyacrylate-hexyl ester and polymethacrylic acid lauryl ester with one or two types of oiliness improvers selected from the group consisting of refined lard, oleic acid, phosphate, hindered ester, isostearic acid, and C18 saturated higher alcohol and which are liquid at room temperature and which are compatible with the polymers. The oiliness improver is compounded as a thinning oil at a specified composition ratio.
1. An oily lubricant for cold plastic processing of metallic material comprising:one or both of the polymers selected from the group consisting of 2-ethyl polyacrylate-hexyl ester having an average molecular weight of 14,000 Mw and polymethacrylic acid lauryl ester having an average molecular weight of 48,000 Mw; one or more oiliness improver selected from the group consisting of pure lard, phosphate, hindered ester, isostearic acid, or C18 saturated higher alcohol, said oiliness improver having a flash point of over 150� C., being in a form of a low viscosity fluid at room temperature, and being compatible with said polymer, said oiliness improver comprising 20 to 75% by weight of a total weight of said polymer and said oiliness improver; and wherein kinematic viscosity of said lubricant at 50� C. is adjusted to 1,000 cst or less. Description
The present invention is intended to solve the above-mentioned problems in the prior art, and the object of this invention is to provide an oily lubricant for cold plastic processing of metallic material, that has a burning resistance nearly equivalent to that of lubricants obtained by the conventional chemical conversion coatings or synthetic film coatings, for the range from the fluid lubrication range to the boundary lubrication range.
Hereunder, a detailed description of the process for determining that which has been mentioned above as the principles of this invention will be given.
TABLE 14__________________________________________________________________________(Area Reduction Test)  Blank Diameter mm &#966;                      92                        93 94 95 96 97 98 99 100__________________________________________________________________________  Reduction Ratio  = blank diameter    2.3                        2.325                           2.35                              2.375                                 2.4                                    2.425                                       2.45                                          2.475                                             2.5  � punch diameter% by   Oily  Mineralweight Lubricant        Oilof     100 parts         0 parts             149                 &#9675;, &#9675;                                    &#9675;,&#9675;                                       &#9675;,&#9675;                                          X,X                                             X,Xtest   100 parts        10 parts             150&#732;       &#9675;,&#9675;                                 &#9675;,&#9675;                                    X,&#9675;                                       X,Xoil    100 parts        20 parts             160              &#9675;,&#9675;                                 &#9675;,&#9675;                                    X,X  100 parts        40 parts             cst           &#9675;,&#9675;                              &#9675;,&#9675;                                 X,X  100 parts        60 parts        &#9675;,&#9675;                           &#9675;,&#9675;                              X,XCONVEN-  Commercial 160           &#9675;,&#9675;                              &#9675;,&#9675;                                 X,X                                    X,XTIONAL Press OilPRODUCT  Resin Coating             --                  &#9675;,&#9675;                                    &#9675;,&#9675;                                       &#9675;,&#9675;                                          &#9675;,X                                             X,X  Lubrication             50� C. kinematic             viscosity cst__________________________________________________________________________ A. Remarks: 1. Cylinder drawing (area reduction) test condition Punch diameter; 40 mm &#966;, shoulder 4.5 mm R Die diameter; 42.58 mm &#966;, shoulder 9.1 mm R Sample material tested; spec 0.8 mmt (cold rolled steel sheet) Drawing rate; 20 M/min Wrinkle press; 700 kg 2.  &#9675;  . . . Drawing is succeeded, X . . . Ruptured 3. cst indicates the kinematic viscosity at 50� C. 4. For the product according to this invention, the sample H6 in Table 9 was used. 5. As the thinning oil, the machine oil 220 that is similar to H6 in viscosity was used. 6. As the commercial press oil, No. 640 press machine oil (metal working fluid) produced by Nippon Kosakuyu (50� C. 160 cst, with chlorine, sulfur system extreme pressure additive compounded) was used. 7. For the resin coating lubrication processing, a resin coating type lubricant, commercial name "Lubcoat N7" from Nippon Kosakuyu, was used.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2486493 *Jan 9, 1947Nov 1, 1949Tidewater Associated Oil CompaOil compositionsUS2508016 *Jan 11, 1947May 16, 1950 Lubricating oil foe use in rollingUS2544376 *Aug 21, 1948Mar 6, 1951Monsanto ChemicalsLubricating oil containing a polymer of oleyl methacrylateUS2604453 *Dec 30, 1948Jul 22, 1952Standard Oil Dev CoNew copolymer compositionsUS2899390 *Mar 29, 1956Aug 11, 1959 Non-staining aluminum rollingUS3223635 *Apr 6, 1964Dec 14, 1965Far Best CorpCoolant and lubricant composition and method for cold working metalUS3340194 *Sep 11, 1962Sep 5, 1967Sun Oil CoMetal working lubricantUS3429815 *Oct 8, 1965Feb 25, 1969Bethlehem Steel CorpRolling oilsUS4585564 *Jun 15, 1984Apr 29, 1986Nippon Kokan Kabushiki KaishaCold rolling oil for steel sheetUS4600547 *Jul 12, 1984Jul 15, 1986Ford Motor CompanyMethod of preparing powder ingredients by dry milling for subsequent consolidationJPS57137390A * Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS5211861 *Jan 22, 1991May 18, 1993Ausimont S.R.L.Liquid aqueous compositions comprising perfluoropolyethereal compounds suitable as lubricants in the plastic processing of metalsUS5399274 *Apr 22, 1993Mar 21, 1995Marcus; R. StevenMetal working lubricantUS6562768Aug 13, 2001May 13, 2003Ronnie L. GregstonComposition for and method of cutting internal threads on the surface of a hole in a workpieceUS7718585 *Jul 21, 1999May 18, 2010Lee County Mosquito Control DistrictLubricant compositions and methodsUS7767631 *Jul 23, 1999Aug 3, 2010Lee County Mosquito Control DistrictLubricant compositions and methods* Cited by examinerClassifications U.S. Classification508/162, 508/474, 508/473International ClassificationC10M169/04, C10N30/12, C10N30/06, C10M107/28, C10N40/24, C10M111/04Cooperative ClassificationC10N2240/405, C10M2207/404, C10M2223/023, C10M2207/203, C10M2207/401, C10M2223/0405, C10M2223/042, C10M2203/1045, C10M2203/1065, C10M2207/243, C10M2207/125, C10N2240/406, C10M2209/08, C10M2207/345, C10M2207/163, C10M2207/281, C10M2223/103, C10M2223/0603, C10N2240/402, C10N2240/403, C10M2209/0863, C10N2240/407, C10M2207/021, C10M2209/084, C10M2207/283, C10M2203/1025, C10M2207/2805, C10M2207/1253, C10M2207/183, C10N2240/409, C10M2203/1085, C10M2207/1203, C10M2223/083, C10M2207/1213, C10M2207/40, C10M2207/286, C10M2207/282, C10M111/04, C10M2223/04, C10M2223/0495, C10M2223/003, C10M2207/4045, C10M2209/0845, C10M2203/1006, C10M2207/129, C10N2240/408, C10N2240/404European ClassificationC10M111/04Legal EventsDateCodeEventDescriptionAug 8, 1986ASAssignmentOwner name: NIHON-KOUSAKUYU CO., LTD., 29-14, SHIBA 5-CHOME, MFree format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:KOBORI, TAKESHI;KIMURA, SHIGEKI;REEL/FRAME:004590/0121Effective date: 19860609Feb 3, 1992FPAYFee paymentYear of fee payment: 4Feb 2, 1996FPAYFee paymentYear of fee payment: 8Feb 22, 2000REMIMaintenance fee reminder mailedJul 30, 2000LAPSLapse for failure to pay maintenance feesOct 3, 2000FPExpired due to failure to pay maintenance feeEffective date: 20000802RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services