JP2007031629A - Lubricant additive, composition and lubricants - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To give a lubricant additive which has a favorable and long lasting stickiness, shear stability, heat resistance and can impart appropriate viscous characteristics to a lubricant. <P>SOLUTION: The lubricant additive is composed of (A) 6-20C 1-alkene polymer with intrinsic viscosity [η] in a range of 3.0-10.0 dL/g, a lubricant additive composition is composed of 0.1-20 wt.% of (A) 6-20C 1-alkene polymer with intrinsic viscosity [η] in a range of 3.0-10.0 dL/g, and 99.9-80 wt.% of (B) a base oil, and a lubricant comprises 0.1-50 wt.% of 6-20C 1-alkene polymer with intrinsic viscosity [η] in a range of 3.0-10.0 dL/g. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lubricant additive comprising a 1-alkene polymer having 6 to 20 carbon atoms, a composition containing the polymer, and a lubricant containing the polymer.

General lubricants have a so-called viscosity temperature dependency in which the viscosity changes greatly when the temperature changes. These lubricants preferably have a small temperature dependency, and for the purpose of reducing the temperature dependency of the viscosity, a certain polymer that is soluble in the lubricant base oil is used as the viscosity modifier. In recent years, polyisobutene, ethylene / α-olefin copolymers, methacrylic acid ester polymers, and the like have been widely used as such viscosity modifiers. Viscosity modifiers are generally used for lubricants to maintain proper viscosity at high temperatures, but are particularly suitable for sliding members and bearings between sliding members, as represented by chain saw oil, gear oil and grease. Since an adhesive strength is required, those having adhesiveness are useful. Currently, compositions such as polyisobutene are known, and are used as tackifiers and sag-preventing agents in lubricating oils or greases (see Patent Document 1).
JP, 2003-138288, A Although a viscosity modifier is used in order to maintain a suitable viscosity at the time of high temperature and low temperature of lubricating oil, it is effective to keep polymer concentration as low as possible economically, and it is as high molecular weight as possible. A method using the following polymer is known. However, for example, it has been found by the present inventors that a polyisobutene-based composition has insufficient adhesive durability and shear stability.

  A 1-olefin polymer is known as a polymer to be added to the lubricating oil (see Patent Documents 2 and 3). These polymers are considered to have excellent heat resistance in that they do not have a double bond at least in the main chain.

US Pat. No. 824460 (Patent Document 2) uses a polymer having alternating alkyl groups having 8 to 20 carbon atoms and methylene carbon as a lubricant thickener, pour point depressant and viscosity index improver. It is described as effective. However, the average carbon number of the side chain carbon of this polymer is 10-14. In addition, it is not described that the 1-alkene polymer having 6 to 20 carbon atoms has an effect of improving the viscosity index and can impart tackiness when used as a component of a lubricant such as lubricating oil and grease. . Also, there is no description about shear stability. USP3631008 (Patent Document 3) describes a copolymer derived from an α-olefin having at least three or more kinds of α-olefins and having 7 to 20 carbon atoms and an odd number of carbon atoms. Is a residue derived from an α-olefin having an even number of carbon atoms, and is diluted with a solvent as a pour point depressant of a lubricating oil and an adhesive. It is described that it is used as. This patent only describes that an α-olefin polymer having only an even number of carbon atoms becomes waxy, and does not describe the tackiness imparting performance of the polymer. . Also, there is no description about shear stability.
US Pat. No. 824460 US Pat. No. 3,361,008

  As a result of diligent research in this situation, specific 1-alkene polymers have good tackiness, stickiness persistence, shear stability, heat resistance, and give proper viscosity characteristics to lubricants. It was found useful as an additive for lubricants, and the present invention was completed.

  That is, the present invention is useful as a tackifier and anti-sagging agent for various lubricants for automobiles and industries, and has excellent adhesiveness, adhesive durability, shear stability, heat resistance, and lubricant. Providing lubricant additives that can impart appropriate viscosity characteristics, additive compositions for lubricants, adhesives, adhesive durability, shear stability, heat resistance, and proper viscosity characteristics The purpose is to do.

The lubricant additive according to the present invention is a 1-alkene polymer having 6 to 20 carbon atoms, and has an intrinsic viscosity [η] in the range of 3.0 to 10.0 dl / g. Characterized by comprising coalescence (A);
In the present invention, in the 1-alkene polymer (A), 1-alkene is one or more selected from 1-alkene having 6, 8, 10, 12, 14, 16, 18, 20 carbon atoms. Preferably, the 1-alkene is at least one selected from 1-alkene having 6, 8, and 10 carbon atoms.

  In the additive composition for a lubricant according to the present invention, the ratio of the 1-alkene polymer (A) to the oil (B) is (A) 0.1 to 20% by weight, and (B) 80 to 99.9. % By weight (the sum of A and B is 100% by weight).

  The lubricant according to the present invention is a 1-alkene polymer having 6 to 20 carbon atoms, and has a limiting viscosity [η] in the range of 3.0 to 10.0 dl / g (A ) In an amount of 0.1 to 50% by weight.

  The additive for lubricant and the additive composition for lubricant of the present invention are excellent in adhesiveness, excellent in adhesive strength and shear stability, and can impart proper viscosity characteristics to the lubricant. It is useful for addition to chainsaw oil, gear oil and grease.

  The lubricant of the present invention has good tackiness, persistence of tackiness, shear stability, heat resistance, and appropriate viscosity characteristics, so it is particularly useful for chainsaw oil, gear oil and grease. .

  Hereinafter, the present invention will be specifically described.

  The additive for lubricant according to the present invention comprises a 1-alkene polymer (A).

1-Alkene Polymer (A)
The 1-alkene polymer (A) used as the lubricant additive of the present invention is a 1-alkene polymer having 6 to 20 carbon atoms, and has an intrinsic viscosity [η] of 3.0 to 10.0 dl / It is in the range of g.

  In the said polymer (A) used by this invention, carbon number of 1-alkene is 6-20. (A) may be a 1-alkene homopolymer or a plurality of 1-alkene copolymers. When the number of carbon atoms is within the above range, a balanced performance of tackiness, stickiness persistence, shear stability, heat resistance, and good viscosity characteristics can be obtained. The 1-alkene is preferably at least one selected from 1-alkenes having 6, 8, 10, 12, 14, 16, 18, and 20 carbon atoms, and may be composed of only these alkenes. More preferred.

  In the present invention, 1-alkene is more preferably one or more selected from 1-alkene having 6 to 10 carbon atoms from the viewpoint of shear stability when (A) is added to the lubricant, More preferably, it consists only of these 1-alkenes. Furthermore, it is more preferable to consist only of 1-alkene having 6, 8, or 10 carbon atoms. In particular, the 1-alkene is preferably at least one selected from 1-alkenes having 8 to 10 carbon atoms, and particularly preferably only 1-alkenes having 8 and 10 carbon atoms. When the carbon number is within the above range, particularly balanced performance of tackiness, stickiness persistence, shear stability, heat resistance, and good viscosity characteristics can be obtained.

  In the present invention, the (A) 1-alkene polymer may contain a small amount of a monomer other than the 1-6 alkene having 6 to 20 carbon atoms, such as ethylene and propylene. It is an aspect.

  The 1-alkene polymer (A) has an intrinsic viscosity [η] of 3.0 to 10.0 dl / g, preferably 3.0 to 8.0 dl / g, particularly preferably 4.0 to 7.0 dl. / G.

  The intrinsic viscosity [η] of the 1-alkene polymer (A) is measured at 135 ° C. in decalin.

  A lubricant containing a 1-alkene polymer (A) having an intrinsic viscosity [η] within the above range has a balance of adhesiveness, adhesive durability, shear stability, heat resistance, and good viscosity characteristics. Especially excellent.

  Although there is no restriction | limiting in particular in the manufacturing method of the polymer (A) of 1-alkene used by this invention, For example, it consists of a solid titanium catalyst component, an organoaluminum compound (organoaluminum oxy compound), and an electron donor catalyst component. It can manufacture by polymerizing using a catalyst or a metallocene catalyst.

  The solid titanium catalyst component is a highly active catalyst component containing magnesium, titanium, halogen and an electron donor as essential components. Such a solid titanium catalyst component is prepared by contacting a magnesium compound, a titanium compound and an electron donor.

Examples of the solid titanium catalyst component include a tetravalent halogen-containing titanium compound represented by Ti (OR) _g X _4-g (R is a hydrocarbon group, X is a halogen atom, 0 ≦ g ≦ 4). it can.

  Examples of the organoaluminum catalyst component include trialkylaluminum such as triethylaluminum and trialkenylaluminum such as triisobutylaluminum.

  As the electron donor catalyst component, an oxygen-containing electron donor such as alcohol can be used.

Lubricant additive composition The lubricant additive composition of the present invention is a 1-alkene polymer having 6 to 20 carbon atoms, and has an intrinsic viscosity [η] of 3.0 to 10.0 dl / g. The 1-alkene polymer (A) in the range of 0.1 to 20% by weight, the base oil (B) is 99.9% to 80% by weight (the sum of A and B is 100% by weight), and It consists of
(Oil (B))
Although there is no restriction | limiting in particular as oil (B) used by this invention, Animal oil, vegetable oil, mineral oil, synthetic oil, or 2 or more types of mixtures chosen from them can be mentioned preferably. These oils (B) are preferably those that can be used as a base oil for lubricants.

Examples of synthetic oils include poly-α-olefins having a kinematic viscosity at 100 ° C. of ^{2 to} 100 mm ² / s (α-olefins usually have 8 to 12 carbon atoms), polyol esters, diesters, and the like. . Examples of animal oils include milk fat, beef tallow, lard (pig tallow), sheep fat, beef leg oil, whale oil, coconut oil, bonito oil, herring oil, coconut oil. It is not limited. As vegetable oil, soybean oil, rapeseed oil, sunflower oil, safflower oil, peanut oil, corn oil, cottonseed oil, rice bran oil, kapok oil, sesame oil, olive oil, sesame oil, castor oil, cacao butter, sha fat, palm oil, palm kernel Examples include, but are not limited to, oil, palm oil, hemp seed oil, rice oil, and tea seed oil.

Kinematic viscosity at 1 to 50 mm ² / s, and mineral oil having a viscosity index of 80 or higher or poly α- olefin is 2 to 100 mm ² / s, is preferably used in particular 100 ° C..

In kinematic viscosity of 1 to 50 mm ² / s at even 100 ° C. Among these, and a viscosity index is particularly preferably 80 or more mineral oils.

  Here, the kinematic viscosity and the viscosity index are measured according to ASTM D445 (JIS K2283).

(Additive composition for lubricant)
The composition according to the present invention comprises the 1-alkene polymer (A) and oil (B), wherein (A) is 0.1 to 20% by weight and oil (B) is 99.9% by weight to 80% by weight (the sum of A and B is 100% by weight), preferably (A) is 0.2 to 15% by weight and oil (B) is 99.8% to 85% by weight, more preferably ( A) is composed of 0.5 to 10% by weight, and oil (B) is composed of 99.5 to 90% by weight. In the present invention, in addition to the components (A) and (B), a small amount of other components such as a heat resistance stabilizer may be contained within a range not impairing the object of the present invention.

  Since the composition of the present invention is a composition containing the component (A) in the above-mentioned amount, for example, in producing a lubricant, the composition can be mixed with other components of the lubricant to produce a lubricant. The tackiness can be imparted. Moreover, since it functions also as a viscosity index adjusting agent of a lubricant, a good viscosity index and tackiness can be simultaneously imparted to the lubricant. Since the composition of this invention is a composition with oil (B) as mentioned above, the workability | operativity in the case of adding is also favorable and can be easily mixed with another component.

Lubricant The lubricant according to the present invention is characterized by comprising the polymer (A) of the 1-alkene. The lubricant according to the present invention is usually 0.1 to 50 parts by weight, preferably 0.1 to 30 parts by weight, when the 1-alkene polymer (A) is 100 parts by weight of the lubricant. It is.

For example, when the lubricant is a lubricating oil, the polymer of 1-alkene is further preferably contained in an amount of 0.2 to 20 parts by weight, more preferably 0.2 to 5 parts by weight.
Further, when the lubricant is a solid lubricant such as grease, the 1-alkene polymer is more preferably 1 to 40 parts by weight, particularly preferably 2 to 20 parts by weight.

  The balance other than the component (A) of the lubricant according to the present invention is a base oil (BB) described below and an additive used as necessary.

[Base oil (BB)]
The base oil (BB) used in the lubricant of the present invention is not particularly limited, but preferably includes animal oil, vegetable oil, mineral oil, synthetic oil, or a mixture of two or more selected from them.

Examples of synthetic oils include poly-α-olefins having a kinematic viscosity at 100 ° C. of ^{2 to} 100 mm ² / s (α-olefins usually have 8 to 12 carbon atoms), polyol esters, diesters, and the like. . Examples of animal oils include milk fat, beef tallow, lard (pig tallow), sheep fat, beef leg oil, whale oil, coconut oil, bonito oil, herring oil, coconut oil. It is not limited. As vegetable oil, soybean oil, rapeseed oil, sunflower oil, safflower oil, peanut oil, corn oil, cottonseed oil, rice bran oil, kapok oil, sesame oil, olive oil, sesame oil, castor oil, cacao butter, sha fat, palm oil, palm kernel Examples include, but are not limited to, oil, palm oil, hemp seed oil, rice oil, and tea seed oil.

In particular, a mineral oil having a kinematic viscosity at 100 ° C. of 1 to 50 mm ² / s and a viscosity index of 80 or more, or a poly α-olefin having a kinematic viscosity at 100 ° C. of ^{2 to} 100 mm ² / s is preferably used.

Among these, a mineral oil having a kinematic viscosity at 100 ° C. of 1 to 50 mm ² / s and a viscosity index of 80 or more is particularly preferable.

  Here, the kinematic viscosity and the viscosity index are measured according to ASTM D445 (JIS K2283).

[Additive]
Examples of the additive include, for example, when the lubricant is a lubricating oil, an antioxidant, a cleaning dispersant, an extreme pressure agent, a viscosity index improver, a pour point depressant, an antifoaming agent, a rust inhibitor, A corrosion inhibitor etc. can be mentioned. However, it is not limited to these. When the lubricant is a solid lubricant such as grease, additives that are usually added to the grease such as a thickener, an antioxidant, and an extreme pressure agent can be mentioned without limitation.

  Here, specific examples of the antioxidant include phenol-based antioxidants such as 2,6-di-t-butyl-4-methylphenol; amine-based antioxidants such as dioctyldiphenylamine.

  Examples of the detergent / dispersant include sulfonates such as calcium sulfonate and megnesium sulfonate; finates; salicylates; succinimides; benzylamine and the like.

  Examples of extreme pressure agents include sulfurized fats and oils, sulfurized olefins, sulfides, phosphate esters, phosphite esters, phosphate ester amine salts, and phosphite amine salts.

  Examples of the viscosity index improver include an ethylene / α-olefin copolymer, a methacrylic ester polymer, a styrene / maleic ester copolymer, or a composition obtained by diluting these polymers with mineral oil.

  As the pour point depressant, for example, a polymer compound containing an organic acid ester group is used, and a vinyl polymer containing an organic acid ester group is particularly preferably used. Examples of vinyl polymers containing organic acid ester groups include alkyl methacrylate (co) polymers, alkyl acrylate (co) polymers, alkyl fumarate (co) polymers, and alkyl maleate (co). Examples include polymers and alkylated naphthalene.

  Examples of the antifoaming agent include silicon-based antifoaming agents such as dimethylsiloxane and silica gel dispersion; alcohols and ester-based antifoaming agents.

  Examples of the rust inhibitor include carboxylic acid, carboxylate, ester, phosphoric acid and the like. Examples of the corrosion inhibitor include benzotriazole and its derivatives, and thiazole compounds.

The thickener is not particularly limited, and commonly used thickeners such as lithium soap, bentonite, silica and urea can be used without limitation.

The lubricant according to the present invention is usually 99.9 to 50 parts by weight when the total of the (BB) base oil and other additives is 100 parts by weight of the lubricant. The ratio between the base oil and the other additive is arbitrary, but the ratio between the base oil (BB) and the other additive is preferably about 100/0 to 50/50.

  For example, when the lubricant is a lubricating oil, the total amount of (BB) base oil and other additives is more preferably 99.8 to 80 parts by weight, more preferably 99.8 to 95 parts by weight. In the case of lubricating oil, the other additive is preferably used at a weight ratio of the base oil (BB) to the additive of 100/0 to 70/30, more preferably 99/1 to 70/30. It is.

Further, when the lubricant is a solid lubricant such as grease, the total amount of (BB) base oil and other additives is more preferably 99 to 60 parts by weight, particularly preferably 80 to 98 parts by weight. In the case of grease, the other additive is preferably used in a weight ratio of the base oil (BB) to the other additive of 100/0 to 50/50, more preferably 99/1 to 60 /. 40.
(Preparation method)
The composition according to the present invention can be prepared by dissolving the 1-alkene polymer (A) in the oil (B) by a conventionally known method. If necessary, other additives can be added at any stage.

  The lubricant according to the present invention can be prepared by dissolving the 1-alkene polymer (A) in the base oil (BB) by a conventionally known method. If necessary, other additives can be added at any stage. The lubricant according to the present invention can also be prepared by mixing the lubricating additive composition with the base oil (BB) and other additives as required.

  EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, the various physical properties in an Example were measured as follows.

(1) Intrinsic viscosity [η];
Measurements were made at 135 ° C. in decalin.

(2) Kinematic viscosity (KV) at 100 ° C;
Measurements were made according to ASTM D 445. In this example, the KV of the sample oil was adjusted to 12 to 13 mm ² / s.

(3) Viscosity Index
Measurements were made according to ASTM D 445.

(4) Shear stability (ultrasonic irradiation method);
Based on the JPI method (according to ASTM D2603), the viscosity reduction rate before and after 30 minutes irradiation was calculated from the following formula.

* Viscosity reduction rate (%) = (viscosity before test−viscosity after test) / viscosity before test × 100
(5) Tackiness;
(5-1) Stringing property: At room temperature, one drop of sample oil was sandwiched between the thumb and the finger, and the presence or absence of stringing was observed and evaluated when both fingers were released or touched.
(5-2) Adhesive strength: At low temperature (5 ° C.), a metal rod with a spiral groove attached to a stirrer is immersed in the sample oil, and the sample oil is rotated into the groove of the metal rod when rotated at 300 rpm. The state of being pulled up (height from the liquid surface mm) was observed and evaluated.
(5-3) Persistence of adhesive strength: 50 ml of sample oil is placed in a glass cylindrical sample bottle, and the adhesiveness after heating for 10 hours in an air oven at 150 ° C. in an open system is the stringiness of the above (1). evaluated.
(5-4) Viscoelasticity: Using a rheometer (Rheometric ARES), put 2 ml of sample oil into a corn plate and measure viscoelasticity (normal stress magnitude) in a temperature range of 0 to -20 ° C. It was evaluated with a score of 1 to 3.

(Score) 1: Small 2: Medium 3: Large
Synthesis example of 1-alkene polymer (preparation of solid titanium catalyst component)
An anhydrous magnesium chloride 95.2 g, decane 442 ml and 2-ethylhexyl alcohol 390.6 g were heated at 130 ° C. for 2 hours to form a homogeneous solution, and then 21.3 g of phthalic anhydride was added to the solution. The mixture was stirred and mixed at 1 ° C. for 1 hour, and phthalic anhydride was dissolved in this homogeneous solution. After cooling the homogeneous solution thus obtained to room temperature, 75 ml of this homogeneous solution was charged dropwise into 200 ml of titanium tetrachloride maintained at −20 ° C. over 1 hour. After completion of the charging, the temperature of the mixed solution was raised to 110 ° C. over 4 hours. When the temperature reached 110 ° C., 5.22 g of diisobutyl phthalate was added, and the mixture was kept at the same temperature for 2 hours with stirring. After completion of the reaction for 2 hours, the solid part was collected by hot filtration, and the solid part was resuspended in 275 ml of titanium tetrachloride, and then heated again at 110 ° C. for 2 hours. After completion of the reaction, the solid portion was again collected by hot filtration, and washed thoroughly with decane and hexane at 110 ° C. until no free titanium compound was detected in the washing solution. The composition of the solid titanium catalyst component prepared by the above operation was 2.2% by weight of titanium, 58.1% by weight of chlorine, 19.2% by weight of magnesium and 10.7% by weight of diisobutyl phthalate.
[Polymerization Example 1]
250 ml of 1-hexene was charged at 23 ° C. into a polymerization reactor equipped with a glass stirring blade having a capacity of 500 ml which had been sufficiently purged with nitrogen. Next, the reactor was heated to 50 ° C. while rotating a stirring blade, and hydrogen and nitrogen were continuously introduced into the reactor at a rate of 4 l and 50 l per hour, respectively. After raising the temperature to 50 ° C., polymerization was started by charging 0.0125 mmol of a solid titanium catalyst component in terms of 0.625 mmol of triisobutylaluminum and titanium atoms. After carrying out the polymerization at 50 ° C. for 30 minutes, a small amount of methanol was added to stop the polymerization, and then the polymerization solution was put into a large amount of methanol to precipitate the polymer. Subsequently, the precipitated polymer was recovered and dried under reduced pressure at 130 ° C. for a whole day and night to obtain 13.5 g of poly-1-hexene. The intrinsic viscosity [η] measured at 135 ° C. in decalin of the obtained polymer was 4.26 dl / g.

The above polymerization conditions are shown in Table 1.
[Polymerization Example 2]
14.7 g of polymer was obtained in the same manner as in Polymerization Example 1 except that 1-hexene was changed to 1-octene and the hydrogen charge was changed to a rate of 3 liters per hour. The intrinsic viscosity [η] measured at 135 ° C. in decalin of the obtained polymer was 5.59 dl / g.

The above polymerization conditions are shown in Table 1.
[Polymerization Example 3]
The procedure was the same as in Polymerization Example 1 except that 1-hexene was changed to 1-decene, and 15.1 g of a polymer was obtained. The intrinsic viscosity [η] measured at 135 ° C. in decalin of the obtained polymer was 4.45 dl / g.

The above polymerization conditions are shown in Table 1.
[Polymerization Example 4]
The same procedure as in Polymerization Example 1 was carried out except that 1-hexene was changed to 1-dodecene, the amount of hydrogen charged was further changed to a rate of 3 liters per hour, and the polymerization time was further changed to 45 minutes. Of polymer was obtained. The intrinsic viscosity [η] measured at 135 ° C. in decalin of the obtained polymer was 4.75 dl / g.

The above polymerization conditions are shown in Table 1.
[Polymerization Example 5]
17.9 g, except that 1-hexene was changed to 1-tetradecene, the hydrogen charge was changed to a rate of 6 liters per hour, and the polymerization time was further changed to 45 minutes. Of polymer was obtained. The intrinsic viscosity [η] measured at 135 ° C. in decalin of the obtained polymer was 4.30 dl / g.

  The above polymerization conditions are shown in Table 1.

Example
[Example 1]
As a base oil (BB), a mineral oil 150 neutral (trademark, FK-150 manufactured by Fuji Kosan Co., Ltd.) having a kinematic viscosity at 100 ° C. of 5.10 mm ² / s and a viscosity index of 102 is 99.12% by weight, 1-alkane weight Sample oil using 0.58% by weight of the polymer of hexene-1 obtained in Polymerization Example 1 as the union (A) and 0.3% by weight of Include 136 (trademark, manufactured by Sanyo Kasei Co., Ltd.) as the pour point depressant. And the lubricating oil performance was evaluated. The results are shown in Table 2.
[Example 2]
The same procedure as in Example 1 was conducted except that 0.42% by weight of the octene-1 polymer obtained in Polymerization Example 2 was used as the 1-alkane polymer (A). The results are shown in Table 2.
[Example 3]
The same procedure as in Example 1 was conducted except that 0.50% by weight of the polymer of decene-1 obtained in Polymerization Example 3 was used as the 1-alkane polymer (A). The results are shown in Table 2.
[Example 4]
The same procedure as in Example 1 was conducted, except that 0.50% by weight of the dodecene-1 polymer obtained in Polymerization Example 4 was used as the 1-alkane polymer (A). The results are shown in Table 2.
[Example 5]
The same procedure as in Example 1 was conducted except that 0.54% by weight of the tetradecene-1 polymer obtained in Polymerization Example 5 was used as the 1-alkane polymer (A). The results are shown in Table 2.

Comparative example
[Comparative Example 1]
The same procedure as in Example 1 except that an ethylene / propylene copolymer having an ethylene content of 60.5 mol% and [η] of 2.94 dl / g was used instead of the 1-alkane polymer (A). Went to. The results are shown in Table 3.
[Comparative Example 2]
Example 1 is used except that instead of the 1-alkane polymer (A), an ethylene / propylene copolymer having an ethylene content of 60.2 mol% and [η] of 4.12 dl / g is used. Went to. The results are shown in Table 3.
[Comparative Example 3]
It carried out similarly to Example 1 using 5.8 weight% of commercially available tackifiers (Schill Seilacher company_made: stractol M) instead of the polymer (A) of 1-alkane. The results are shown in Table 3.
[Comparative Example 4]
Instead of the 1-alkane polymer (A), 8.0% by weight of a commercially available polymethacrylate (PMA) viscosity index improver (manufactured by Sanyo Kasei Co., Ltd .: Include 702) is used, and the pour point depressant (C) is used. The procedure was the same as in Example 1 except that no. The results are shown in Table 3.

Claims (9)

Lubricant additive comprising 1-alkene polymer (A), which is a 1-alkene polymer having 6 to 20 carbon atoms and having an intrinsic viscosity [η] in the range of 3.0 to 10.0 dl / g .   In the 1-alkene polymer (A), the 1-alkene is one or more selected from 1-alkene having 6, 8, 10, 12, 14, 16, 18, 20 carbon atoms. The additive for lubricant according to claim 1.   3. The 1-alkene polymer (A), wherein the 1-alkene is one or more selected from 1-alkene having 6, 8 or 10 carbon atoms. Additive for lubricants.   A 1-alkene polymer having 6 to 20 carbon atoms and a 1-alkene polymer (A) having an intrinsic viscosity [η] in the range of 3.0 to 10.0 dl / g is 0.1 to 20 wt. % And a base oil (B) of 99.9 wt% to 80 wt%.   0.1 to 50 weight of 1-alkene polymer (A) having 6 to 20 carbon atoms and having an intrinsic viscosity [η] in the range of 3.0 to 10.0 dl / g % Lubricant.   In the 1-alkene polymer (A), the 1-alkene is one or more selected from 1-alkene having 6, 8, 10, 12, 14, 16, 18, 20 carbon atoms. The lubricant according to claim 5.   The 1-alkene polymer (A), wherein the 1-alkene is one or more selected from 1-alkene having 6, 8, and 10 carbon atoms. lubricant.   The lubricant according to any one of claims 5 to 7, wherein the lubricant is a chain saw oil or a gear oil.   The lubricant according to any one of claims 5 to 7, wherein the lubricant is grease.