EP3132014B1 - Lubricating product for circular textile machinery for hosiery - Google Patents

Lubricating product for circular textile machinery for hosiery Download PDF

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Publication number
EP3132014B1
EP3132014B1 EP15736651.9A EP15736651A EP3132014B1 EP 3132014 B1 EP3132014 B1 EP 3132014B1 EP 15736651 A EP15736651 A EP 15736651A EP 3132014 B1 EP3132014 B1 EP 3132014B1
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EP
European Patent Office
Prior art keywords
rate
ester
cas
mixture
lubricating product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15736651.9A
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German (de)
English (en)
French (fr)
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EP3132014A1 (en
Inventor
Raoul PASINATO
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Pasinato Raoul (legal Entity)
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Pasinato Raoul (legal Entity)
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Priority to SI201530931T priority Critical patent/SI3132014T1/sl
Priority to RSP20191332 priority patent/RS59460B1/sr
Priority to PL15736651T priority patent/PL3132014T3/pl
Publication of EP3132014A1 publication Critical patent/EP3132014A1/en
Application granted granted Critical
Publication of EP3132014B1 publication Critical patent/EP3132014B1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/08—Amides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/64—Environmental friendly compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/46—Textile oils

Definitions

  • the present invention relates to the field of lubricating products for the hosiery and knitwear machinery sector.
  • the present invention concerns a lubricating product specifically for use on circular textile machinery for hosiery.
  • the needles having the function of knitting the yarns to obtain the textiles are subject to considerable inertial forces resulting from the high accelerations and decelerations they sustain in their reciprocating motion guided by a series of cams.
  • each single needle enables a yarn to be hooked and carried under the knitting bed. This forms the loop that is released during the next rotation to create a row of stitches.
  • More conventional circular machines use around 400 needles and needle jacks, mounted on a cylinder of limited size (3.75 or 4 inches in diameter), and are provided with an electronic control system of the needles and their needle jacks.
  • the needles can have a thickness of 0.3 mm and tolerances of a few hundredths of mm.
  • the mechanical elements that form the needle control members are subject to heavy rubbing, which causes friction and leads to rapid wear.
  • This lubrication is carried out in an "oil bath”: the lubricant is distributed on the head of the cylinders and in general on all the cylinders continuously and constantly, so as to fill the empty spaces between cylinders, needles and needle jacks.
  • This lubrication system helps to reach higher production speeds and to significantly reduce friction of the moving members.
  • the most widely used lubricants for these purposes are mineral oils, obtained from oil refining, mixed with stabilizing additives with antioxidant and antiwear function.
  • a significant parameter for measuring the performance of these oils for industrial application specifically for hosiery knitting machines is the viscosity index VI, linked to the ratio between the two viscosity values measured at two different temperatures (40° and 100°).
  • a high viscosity index indicates a smaller variation in viscosity as the temperature increases; a high value of this index indicates that this oil tends to remain stable at high temperatures.
  • Mineral oils deriving from oil refining are also difficult to dispose of and require specific and complex systems for removing processing waste and dye baths.
  • Oils for textile yarns are generally composed of:
  • oils for synthetic yarns must have high viscosity, in order to be well-absorbed by the textile fibers and to prevent splashing during the processing steps.
  • a fluid and low viscosity oil must be used on circular machinery, to facilitate the smooth movement of the mechanical parts of the various kinematic mechanisms.
  • Document GB 2079778 A discloses a product for lubricating the needles of high-speed knitting machines, in the formulation of which DOBANOL 25 propoxylate represents the main component, over 90%, expressed as a percentage by weight of the total.
  • the DOBANOL 25 propoxylate is based on a condensation product of a mixture of monohydric saturated aliphatic primary alcohols C12, C13, C14, C15 and 1,2-propylene oxide.
  • the lubricating oil in addition to DOBANOL 25 propoxylate also contains additional components (one or more antioxidants, corrosion inhibitors and boundary lubricants).
  • Additional components are IONOL, SARKOSYL 0 or Hamposyl 0, oleic acid, alkali hydroxide, preferably potassium hydroxide, diphenylolpropane and water.
  • the main advantage of the lubricating oil disclosed is that much less thread breakage occurs.
  • Document DE 19502559 A1 discloses a product for lubricating, completely washable and easily biodegradable for knitting machines.
  • the product has a formulation in which the polyalkylene glycol is the main component, expressed as a percentage by weight of the total, over 77%.
  • Anti-corrosive agents e.g. fatty acid amides, fatty acid amines, neutralized anoxidized hydrocarbons, alkylamines and sulfonates
  • the main object of the present invention is to provide a new lubricating product specific for circular textile machinery for producing hosiery that overcomes the aforesaid problems, and therefore performs well from the point of view of lubrication of the linkages and mechanisms of the machine, with a reduction of wear and friction thereon, has a low viscosity, is not subject to oxidation, ensures low operating temperatures of the machinery, is easily washable, biodegradable and therefore easy to dispose of.
  • the present invention also relates to a process for obtaining a lubricating product for circular textile machinery for hosiery.
  • the lubricating product of the invention allows high performances in the global output of the machine to be obtained.
  • the high lubricating power of the product disclosed in the present invention considerably reduces the friction and wear to which all the components of textile machinery for hosiery that operate with very high rotation speeds are normally subject.
  • the operating temperatures of the machinery decrease considerably with the use of this lubricating product: tests carried out showed a decrease of up to 10° C.
  • FIGs, 1a, 1b and 2a, 2b show, with two thermographic images 1a and 2a two related histograms 1b and 2b of the temperatures, the performances of a circular textile machine for hosiery respectively lubricated with a conventional oil and with a lubricating product according to the present invention.
  • the histogram of the temperatures of Fig. 1b relating to the machine lubricated with the conventional oil, shows that the most frequent mean temperature is 59.3 °C, while the maximum temperature reached on the operating cylinder is 73.9 °C.
  • the histogram of the temperatures of Fig. 2b relating to the machine lubricated with the lubricating product of the present invention shows that the most frequent mean temperature drops below 50 °C, while the maximum temperature reached on the operating cylinder never exceeds 64.3 °C.
  • a decrease of the temperatures advantageously leads to a considerable saving of energy, both for the textile machine (a consumption per machine of up to 15% in kilowatt/hour less), but also for the whole processing plant. As a consequence, the systems for cooling the rooms are less overloaded.
  • a further test was carried out, comparing a conventional oil and the lubricating product according to the invention in relation to electricity consumptions detected in 24 hours on the same textile machine.
  • the lubricating product claimed has features of washability that satisfy the standards of modern dyeing processes, with less stress for the fibers and a better quality finish: its ability to emulsify with water thus facilitates elimination of residues from the textile fibers during washing.
  • the lubricating product according to the invention has optimal properties of biodegradability (>90%): this feature is important above all in the final steps to dispose of the dye baths with which the hosiery is treated, with a low environmental impact in the treatment process in biological purification plants.
  • the lubricating product according to the invention has a decidedly higher viscosity index compared to the conventional oils normally used on circular machinery, i.e. always in the range from 170 to 185. These value prove how the product according to the invention is advantageously very stable when the operating temperature varies, maintaining a controlled viscosity at all times, even at high temperatures, without the risk of dispersal and leakage of oil due to excessive fluidity.
  • the lubricating product in its most general formula, comprises a mixture composed of:
  • esters have chemical-physical characteristics in common: they have a viscosity at 20 °C between 15 and 40 mm 2 /sec, a viscosity at 40 °C variable between 5 and 25 mm 2 /sec; they have a neutralization number less than 1 mg KOH/g of oil and a iodine number less than 2 mg I 2 /100 g of substance.
  • Said at least one ester is chosen from 2-ethylhexyl stearate, 2-ethylhexyl palmitate, 2-ethylhexyl cocoate, 2-ethylhexyl laurate, isobutyl laurate, isotridecyl stearate, isopropyl palmitate, or a mixture thereof.
  • the ester chosen is 2-ethylhexyl stearate (CAS N. 22047-49-0), an ester with a molecular formula C 26 H 52 O 2 obtained chemically from the esterification of stearic acid with 2-ethylhexyl alcohol.
  • Said at least one alcohol ethoxylate advantageously performs the function of pH regulator, antioxidant and anticorrosion and antirust of the metal surface of the machinery, as well as improving the washability of the lubricating product.
  • alcohol ethoxylates examples include alcohol C12-15 ethoxylate ( CAS N. 68131-39-5 ) or 2-(2-dodecyloxyethoxy) ethanol ( CAS N. 3055-93-4 ), or a mixture thereof.
  • An example of mixture of alcohol ethoxylates provides for the following composition expressed in percentage in weight with respect to the total: 70% of alcohol C12-15 ethoxylate ( CAS N. 68131-39-5 ) and 30% of 2-[2-(dodecyloxy)ethoxy] ethanol ( CAS N. 3055-93-4 ).
  • coconut amide is added.
  • the coconut amide has antioxidant function and inhibits degradation processes of the ester base: its particles tend to incorporate and sequester water, thus making the lubricant more transparent (pure esters have a turbid appearance, somewhat unappealing for the textile industry, which pays great attention to problems of stains on fabrics).
  • mixtures according to possible embodiments of the invention expressed in percentage in weight with respect to the total, are set down below.
  • a process to obtain a lubricating product for circular textile machinery for hosiery according to the invention comprises the following steps:
  • the process also comprises the step of treating said at least one alcohol ethoxylate with a process of washing with water to remove the polyglycols present before adding it into said mixer.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP15736651.9A 2014-04-14 2015-03-31 Lubricating product for circular textile machinery for hosiery Active EP3132014B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201530931T SI3132014T1 (sl) 2014-04-14 2015-03-31 Mazivo za stroje za krožno pletenje
RSP20191332 RS59460B1 (sr) 2014-04-14 2015-03-31 Proizvod za podmazivanje za kružnu tekstilnu mašinu za čarape
PL15736651T PL3132014T3 (pl) 2014-04-14 2015-03-31 Produkt smarny do cylindrycznych maszyn włókienniczych do wyrobów pończoszniczych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITCR20140010 2014-04-14
PCT/IT2015/000092 WO2015159314A1 (en) 2014-04-14 2015-03-31 Lubricating product for circular textile machinery for hosiery

Publications (2)

Publication Number Publication Date
EP3132014A1 EP3132014A1 (en) 2017-02-22
EP3132014B1 true EP3132014B1 (en) 2019-07-17

Family

ID=50981660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15736651.9A Active EP3132014B1 (en) 2014-04-14 2015-03-31 Lubricating product for circular textile machinery for hosiery

Country Status (5)

Country Link
EP (1) EP3132014B1 (sl)
PL (1) PL3132014T3 (sl)
RS (1) RS59460B1 (sl)
SI (1) SI3132014T1 (sl)
WO (1) WO2015159314A1 (sl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113717778B (zh) * 2021-08-23 2022-12-06 江苏悦孚油品有限公司 一种针织大圆机合成油及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2079778A (en) * 1980-07-10 1982-01-27 Shell Int Research Oils and process for lubrication of needles of high speed knitting machines
DE19502559C2 (de) * 1995-01-27 1997-01-09 Zeller & Gmelin Gmbh & Co Verwendung vollständig auswaschbarer, biologisch gut abbaubarer Nadel- und Platinenöle auf Basis wasserlöslicher Polyglykole
TW436520B (en) * 1999-06-28 2001-05-28 Ind Tech Res Inst Biodegradable coning oil
JP2011140642A (ja) * 2009-12-10 2011-07-21 Showa Shell Sekiyu Kk 潤滑油組成物

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
RS59460B1 (sr) 2019-11-29
SI3132014T1 (sl) 2019-11-29
WO2015159314A1 (en) 2015-10-22
EP3132014A1 (en) 2017-02-22
PL3132014T3 (pl) 2020-02-28

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