JP2003277617A - Lubricant for resin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a lubricant for a resin, having excellent dispersibility in and compatibility with a resin component. <P>SOLUTION: This lubricant for the resin is composed of a polysilane which has at least one of structural units expressed by formulae (1) to (3) [R<SP>1</SP>, R<SP>2</SP>, and R<SP>3</SP>are each an alkyl, an aryl, or the like; and (x), (y), and (z) are each 0 or more, provided that (x+y+z) is 2 or more] and added to the resin so as to obtain a resin composition having high lubricity. The polysilane contains a straight chain polysilane and a cyclic polysilane. The lunricant is used in an amount of about 0.05-30 pts.wt. based on 100 pts.wt. of the resin component. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lubricant for resins composed of polysilane, a resin composition containing the lubricant, and a molded product formed from the resin composition.

[0002]

2. Description of the Related Art In order to improve the water / oil repellency, releasability, releasability, stain resistance, and lubricity of resins, additives such as silicone compounds and fluorine compounds having a small surface free energy are added to the resin. It is known to be blended with. However, since these additives have insufficient compatibility or dispersibility with the resin, the additives are likely to exude and become unevenly distributed on the surface layer of the resin composition. Then, the resin composition in which the additive is unevenly distributed in the surface layer, if the surface layer portion is worn even by slight friction or sliding,
Properties such as lubricity are significantly impaired. Further, the additive bleeds out over time on the surface, and high lubricity or slidability cannot be secured for a long period of time.

Further, when the above-mentioned additive is blended with a transparent resin such as a polycarbonate resin, the resin may be colored or opaque due to its low affinity with the resin. In addition, the refractive index may have a distribution in the resin. Therefore, the use of the resin composition is limited.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a lubricant having excellent dispersibility in a resin component and compatibility with the resin component and capable of imparting high lubricity to the resin. It is in.

Another object of the present invention is to provide a resin composition and a molded product which can maintain high lubricity or slidability for a long period of time without impairing the transparency of the resin.

Still another object of the present invention is to provide water and oil repellency,
It is an object of the present invention to provide a resin composition and a molded product capable of maintaining releasability, releasability, antifouling property and lubricity for a long period of time.

[0007]

The inventors of the present invention have conducted extensive studies to solve the above-mentioned problems, and as a result, a lubricant composed of polysilane was found to have a dispersibility in a resin component and a resin component. It was found that the compatibility was excellent.

That is, the resin lubricant of the present invention is a lubricant for imparting lubricity to a resin, and is at least one of structural units represented by the following formulas (1) to (3). It is composed of polysilane having one structural unit.

[0009]

[Chemical 4]

(In the formula, R ^{1 to} R ³ are the same or different and are hydrogen atom, hydroxyl group, alkyl group, alkoxy group, alkenyl group, cycloalkyl group, cycloalkyloxy group, cycloalkenyl group, aryl group. , An aryloxy group, an aralkyl group, an aralkyloxy group or a silyl group, x, y and z each represent a number of 0 or more, and the sum of x, y and z is a number of 2 or more) The polysilane is It may be composed of a cyclic polysilane represented by the following formula (4).

[0011]

[Chemical 5]

(In the formula, R ¹ and R ² are the same as above. M is 4
The above numbers are sufficient. The said polysilane may be comprised by the linear polysilane represented by following formula (5).

[0013]

[Chemical 6]

(In the formula, R ¹ and R ² are the same as above. R ⁴ to
R ^{6 s} are the same or different and each represents a hydrogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkenyl group, a cycloalkyl group, a cycloalkyloxy group, a cycloalkenyl group, an aryl group, an aryloxy group, an aralkyl group,
It represents an aralkyloxy group or a silyl group, and n is a number of 1 or more.) The present invention also includes a resin composition composed of a resin component and the lubricant. Further, the present invention also includes a molded body formed of this resin composition.

In the present specification, polysilane and oligosilane are collectively referred to as "polysilane".

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION [Polysilane] The resin lubricant of the present invention comprises polysilane. The polysilane is not particularly limited as long as it is a linear, cyclic, branched or network compound having a Si—Si bond, but is usually a structural unit represented by the above formulas (1) to (3). It has at least one structural unit. Examples of such a polysilane include a linear or cyclic polysilane composed of the structural unit represented by the formula (1), and a branch composed of the structural unit represented by the formula (2) or (3). Chain or network polysilane, a combination of structural units represented by the above formulas (1) to (3) (for example, formula (1) and formula (2), formula (1) and formula (3), formula (1) ) To (3)) and the like.

In the above formulas (1) and (2), R ¹ to
The substituent represented by R ³ is a hydrogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkenyl group, a cycloalkyl group, a cycloalkyloxy group, a cycloalkenyl group, an aryl group, an aryloxy group, an aralkyl group or an aralkyl. Examples thereof include an oxy group and a silyl group. Of these, R ^{1 to} R ³ are usually hydrocarbon groups such as an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, and an aralkyl group in many cases. In addition, a hydrogen atom, a hydroxyl group, an alkoxy group, and a silyl group are often substituted in the terminal group.

The alkyl group is a C _1-14 alkyl group such as methyl, ethyl, propyl, isopropyl, butyl, t-butyl or pentyl (preferably C _1-10 alkyl group, more preferably C _1-6 alkyl group). ) Is mentioned. As the alkoxy group, a C _1-14 alkoxy group such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, t-butoxy, pentyloxy (preferably C
_1-10 alkoxy group, more preferably C _1-6 alkoxy group). The alkenyl group is a C _2-14 alkenyl group such as vinyl, allyl, butenyl, pentenyl (preferably C _2-10 alkenyl group, more preferably C _2-10 alkenyl group).
_2-6 alkenyl group).

The cycloalkyl group includes C such as cyclopentyl, cyclohexyl and methylcyclohexyl.
_{A 5-14} cycloalkyl group (preferably a C _5-10 cycloalkyl group, more preferably a C _5-8 cycloalkyl group) can be mentioned. _{Examples of the} cycloalkyloxy group include C _5-14 cycloalkyloxy groups such as cyclopentyloxy and cyclohexyloxy (preferably C _5-10 cycloalkyloxy group, more preferably C _5-8 cycloalkyloxy group). As the cycloalkenyl group, a C _5-14 cycloalkenyl group such as cyclopentenyl or cyclohexenyl (preferably a C _5-10 cycloalkenyl group,
More preferably, it is a C _5-8 cycloalkenyl group).

The aryl group is a C _6-20 aryl group such as phenyl, methylphenyl (tolyl), dimethylphenyl (xylyl) or naphthyl (preferably a C _6-15 aryl group, more preferably a C _6-12 aryl group). ) Is mentioned. The aryloxy group is a C _6-20 aryloxy group (preferably C) such as phenoxy or naphthyloxy.
_6-15 aryloxy group, and more preferably C _6-12 aryloxy group). Examples of the aralkyl group include C _6-20 aryl-C _1-4 alkyl groups (preferably C _6-10 aryl-C _1-2 alkyl groups) such as benzyl, phenethyl and phenylpropyl. Examples of the aralkyloxy group include C _6-20 aryl-C _1-4 alkyloxy groups (preferably C _6-10 aryl-C _1-2 alkyloxy groups) such as benzyloxy, phenethyloxy and phenylpropyloxy. .

Examples of the silyl group include Si _1-10 silyl groups (preferably Si _1-6 silyl groups) such as silyl group, disilanyl group and trisilanyl group.

When R ^{1 to} R ³ are the above-mentioned organic substituents or silyl groups, at least one of the hydrogen atoms is substituted with a functional group such as an alkyl group, an aryl group or an alkoxy group. Good. Examples of such a functional group include the same groups as described above.

Of these substituents, an aryl group (for example, a C _6-20 aryl group such as a phenyl group) and an alkyl group (for example, a C _1-4 alkyl group such as a methyl group) are generally used.

When the polysilane has an acyclic structure (straight chain, branched chain, network), the terminal substituent is usually a hydrogen atom,
A hydroxyl group, an alkyl group, an alkoxy group, and a silyl group.

The degree of polymerization of polysilane, that is, the sum of x, y and z in the structural units (1) to (3) is 2 or more, but usually 2 to 400, preferably 5 to 35.
It is 0, more preferably about 10 to 300.

The molecular weight of polysilane is 3 in terms of number average molecular weight.
00-100,000, preferably 400-50000,
More preferably, it is about 500 to 20,000. In this molecular weight range, polysilane tends to have high dispersibility in the resin. If the number average molecular weight is too high,
There is a possibility that the dispersibility in the resin and the compatibility with the resin may decrease.

Of the above polysilanes, linear polysilanes and cyclic polysilanes, particularly cyclic polysilanes represented by the above formula (4) and linear polysilanes represented by the above formula (5) are preferable. These polysilanes have particularly excellent dispersibility in the resin, and even when mixed with the resin component, the polysilane is uniformly dispersed without being unevenly distributed in the resin component.

[0028] In Formula (4), at least one of R ¹ and R ² is an aryl group [in particular C _{6- 20} aryl group (e.g., phenyl group)] preferably a. Examples of such polysilanes include cyclic polysilanes in which R ¹ is an aryl group and R ² is an alkyl group (in particular, cyclic poly C _6-20 aryl C _1-4 alkylsilane such as cyclic polyphenylmethylsilane), Examples thereof include cyclic polysilanes in which R ¹ and R ² are aryl groups (in particular, cyclic polydiC _6-20 arylsilanes such as cyclic polydiphenylsilane).

The number m of rings of the cyclic polysilane is 4 or more, but is usually about 4 to 12, preferably 4 to.
It is about 10, more preferably about 5 to 10 (particularly about 5 to 8). Generally, m may be about 5.

In the above formula (5), R¹Is an aryl group
(C such as phenyl group_6-20Aryl group), R²And R^Four~
R⁶Is an aryl group (C such as phenyl group_6-20Aryl
Group) or alkyl group (C such as methyl group)_1-4Alkyl
Group) is preferred. In particular, R¹Is a phenyl group, etc.
C_6-20Aryl group, R²And R^Four~ R⁶Is a methyl group, etc.
C _1-4It is preferably an alkyl group. Such a po
R for silane^Four~ R⁶Is a methyl group
Includes methylphenyl polysilane sealed with ryl group
It

The degree of polymerization n of the linear polysilane is 1 or more, usually 1 to 100, preferably 1 to 50, more preferably 1 to 20 (particularly 5 to 20).

[Method for producing polysilane] The polysilane can be prepared by various known methods. In order to produce these polysilanes, for example, a method of dehalogenating polyhalogenated halosilanes using a silicon-containing monomer having a specific structural unit as a raw material and magnesium as a reducing agent (“magnesium reduction method”, WO98 / 29476). Etc.), a method of dehalogenating polycondensation of halosilanes in the presence of an alkali metal (“kipping method”, J. Am. Che
m.Soc., 110,124 (1988), Macromolecules, 23,3423 (1990)
Etc.), a method for dehalogenative condensation polymerization of halosilanes by electrode reduction (J. Chem. Soc., Chem. Commun., 1161 (199
0), J. Chem. Soc., Chem. Commun. 897 (1992), etc.), a method of dehydrogenative condensation polymerization of hydrazines in the presence of a metal catalyst (JP-A-4-334551, etc.), biphenyl, etc. Method by anionic polymerization of cross-linked disilene (Ma
cromolecules, 23, 4494 (1990)), and a method such as a method by ring-opening polymerization of cyclic silanes.

Among these production methods, the obtained polysilane is excellent in purity, molecular weight distribution and compatibility with resin,
The magnesium reduction method is most preferable from the viewpoints of low sodium and chlorine contents and industrial properties such as manufacturing cost and safety. Incidentally, water may be added to the obtained polysilane to generate a silanol group.

Such polysilane has a high affinity and compatibility with the resin, and has high lubricity (sliding property) with respect to the resin.
It can impart water repellency and the like. For example, even aromatic resins (such as polycarbonate resins) and nonpolar resins (such as polyolefin resins) that are generally difficult to uniformly mix and disperse with a lubricant can be uniformly mixed and dispersed. In addition, the resin molding can be uniformly dispersed over the entire surface without segregation on the surface. In particular, even in a coating film or the like, it can be uniformly dispersed in the thickness direction (depth direction), and high lubricity can be maintained for a long period of time. Further, even when the surface of the molded body is worn due to friction or sliding, the lubricity does not suddenly disappear.

[Resin Composition] The resin composition of the present invention comprises a resin component and the lubricant. The resin component includes a thermoplastic resin and a thermosetting resin.

The thermoplastic resin is not particularly limited, but examples thereof include olefin resins (poly α-C _2-10 olefins such as polyethylene, polypropylene and polymethylpentene) and amorphous polyolefin resins (low density polyethylene). Such as amorphous polyolefins, cyclic polyolefins, etc., vinyl resins (polyvinyl chloride, vinyl acetate resins, etc.), aromatic vinyl resins (polystyrene, acrylonitrile-styrene resin, styrene-methyl methacrylate resin, ABS resin) Etc.), acrylic resin (polymethylmethacrylate, (meth) acrylic acid-
Homo- or copolymers of (meth) acrylic monomers such as (meth) acrylic acid esters, methyl methacrylate-styrene copolymers, etc., polycarbonate resins (bisphenol A type polycarbonate etc.), polyester resins (polyethylene) Poly C _2-10 alkylene arylate or copolyester such as terephthalate, polybutylene terephthalate, polycyclohexane dimethylene terephthalate, polyethylene naphthalate, polyarylate, liquid crystal polyester, etc., polyacetal (polyoxymethylene, etc.), polyamide resin (nylon) 6,
Nylon 66, Nylon 46, Nylon 6T, Nylon MXD, etc., Sulfone-based resins (Polysulfone, Polyethersulfone, etc.), Phenylene ether-based resins (Polyphenylene ether, Modified polyphenylene ether, etc.), Thermoplastic elastomers (Styrene-based thermoplastic elastomers, Olefin-based thermoplastic elastomer, etc.),
Fluorine resin (polytetrafluoroethylene etc.) etc. can be illustrated. These thermoplastic resins may be used alone or in combination of two or more.

The thermosetting resin is not particularly limited, but examples thereof include phenol resin (resole type, novolac type phenol resin, etc.), amino type resin (urea resin, melamine resin, etc.), furan resin, polyurethane type resin, epoxy resin. Resin (bisphenol A type epoxy resin, etc.),
Unsaturated polyester resin, diallyl phthalate resin,
Vinyl ester resin, thermosetting acrylic resin, silicone resin, polyimide resin (polyether imide,
Polyamideimide, polyamino bismaleimide, bismaleimide triazine resin, etc.) can be exemplified. These thermosetting resins can be used alone or in combination of two or more. A conventional curing agent may be used for the thermosetting resin. The resin component may be a photocurable resin.

The lubricant of the present invention has high transparency and is not colored. Therefore, the lubricant of the present invention is preferably combined with a transparent resin. Among these resin components, a thermoplastic resin is generally used as the transparent resin, and a polycarbonate resin, a polyester resin (poly C _2-4 alkylene arylate resin such as polyethylene terephthalate or copolyester), a styrene resin (Polystyrene resin, etc.), acrylic resin (polymethyl methacrylate, etc.), amorphous olefin resin (cyclopentadiene resin, cyclic polyolefin such as norbornene resin, etc.) and the like are preferable, and polycarbonate resin is particularly preferable.

As the polycarbonate resin, for example, a polycarbonate obtained by a phosgene method of reacting bisphenols with phosgene, a transesterification method of reacting bisphenols with a carbonic acid diester, or the like can be used.

The bisphenols include bis (4-hydroxyphenyl) methane (bisphenol F), 1,
Bis (hydroxyaryl) C _1-6 alkanes such as 1-bis (4-hydroxyphenyl) ethane (bisphenol AD) and 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 1,1-bis ( Examples thereof include bis (hydroxyaryl) C _4-10 cycloalkane such as 4-hydroxyphenyl) cyclohexane, bis (hydroxyaryl) sulfone such as bis (4-hydroxyphenyl) sulfone, and bisphenols having a fluorene skeleton.

Of these bisphenols, usually,
Bis (hydroxyaryl) C such as bisphenol A
_{Although 1-6} alkanes are used, bisphenols having a fluorene skeleton are preferable from the viewpoint of safety such as low environmental hormone activity.

Examples of the bisphenols having a fluorene skeleton include 9,9-bis (4-hydroxyphenyl) fluorene and 9,9-bis (4-hydroxy-).
9,9-bis (alkylhydroxyphenyl) fluorene such as 3-methylphenyl) fluorene, 9,9-
9,9-bis (arylhydroxyphenyl) fluorene such as bis (4-hydroxy-3-phenylphenyl) fluorene, 9,9-bis such as 9,9-bis (4- (2-hydroxyethoxy) phenyl) fluorene (4- (2-hydroxypolyalkoxy) phenyl) fluorene and the like can be mentioned.

The lubricant of the present invention can exhibit high lubricity and water repellency with a small amount of addition. In addition, even if added in a large amount, it does not segregate from the resin composition or bleed out, and can be dispersed uniformly. Therefore, the proportion of the lubricant can be selected from a wide range depending on the type of the resin or polysilane, and is, for example, 0.0 to 100 parts by weight of the resin component.
The amount is 5 to 30 parts by weight, preferably 0.1 to 20 parts by weight, and more preferably 0.2 to 15 parts by weight.

The above-mentioned resin composition contains conventional additives such as solvents, fillers, reinforcing agents, plasticizers, curing agents, polymerization initiators, catalysts, stabilizers (antioxidants, UV absorbers, etc.),
It may contain a release agent, a flame retardant, an antistatic agent, a coloring agent, a vulcanizing agent, a defoaming agent, a leveling agent, a dispersant, a flow control agent and the like.

The resin composition can be prepared by blending a resin component and a lubricant. Usually, the resin pellets and the stabilizer are pre-mixed, and then the lubricant and other additives are added if necessary. It can be prepared by melt mixing with a kneading device. The kneading device may be a batch type or a continuous type. Examples of the batch type kneading device include a mixing roll, a kneader, an intensive mixer and the like. Examples of the continuous kneading device include a single screw extruder, a meshing twin screw extruder, and a non-mating twin screw extruder. The melt-mixed resin composition is usually pelletized.

When the resin composition is formed as a coating film, it may be obtained by dissolving a resin component and a lubricant in a solvent, forming a coating film on an object to be coated, and then drying. The solvent can be appropriately selected depending on the type of resin or polysilane and is not particularly limited, but examples thereof include water, alcohols (C _1-6 alcohol such as methanol, ethanol, propanol, isopropanol, butanol, cyclohexanol, etc.), ethers. (Cyclic or chain C such as 1,4-dioxane, tetrahydrofuran, diethyl ether, diisopropyl ether, dimethoxyethane, etc.
_4-6 ether), ketones (C _3-6 dialkyl ketone such as acetone and methyl ethyl ketone, cyclohexanone etc.), esters (carboxylic acid C _1-4 alkyl ester such as methyl acetate, ethyl acetate, butyl acetate etc.), carbonization Hydrogens [aliphatic hydrocarbons (hexane etc.), alicyclic hydrocarbons (cyclohexane, methylcyclohexane etc.), aromatic hydrocarbons (toluene, xylene etc.)], cellosolves (methyl cellosolve, ethyl cellosolve, Butyl cellosolve, etc.), carbitols (carbitol, diethylene glycol methyl ether, etc.)
Etc. can be mentioned. These solvents may be used alone or in combination of two or more.

The thickness of the coating film is 0.1 to 150 μm, preferably 0.5 to 80 μm, more preferably 3 to 40 μm.
It is about m.

When the resin component is a thermosetting resin, a lubricant is generally mixed with a curing agent and other additives with an initial condensation product of the resin to prepare a liquid composition, which is then dried and cured. Let

[Molded Article] The method for molding the obtained resin composition varies depending on the type of resin and the application, but in the case of a thermoplastic resin, extrusion molding, injection molding, blow molding, stretched film molding, compression molding. Examples of the method include calender molding and RIM molding. For thermosetting resins, compression molding, transfer molding, lamination molding, cast molding, R
A method such as IM molding can be exemplified.

The resin composition of the present invention can be used in various applications requiring performance such as water / oil repellency, releasability, releasability, stain resistance and lubricity. The shape of the molded body formed of the resin composition is not particularly limited, and for example, linear, two-dimensional (film, sheet, plate, etc.), three-dimensional structure (cylindrical, casing, housing, various types) Parts) and the like. The resin composition, for example,
Various members (equipment, equipment, parts, building materials, interior materials, paints, signboards, etc.) that require the above performance, or films that are attached to the surface that requires the above performance, friction and sliding members (gears, bearings, etc.) ) Or a film or coating formed on a friction or sliding portion. Further, since the resin composition can maintain the transparency of the resin component and the uniformity of the refractive index, it is used for various optical applications such as lenses and optical thin films, and the surface layer of an electrophotographic photoreceptor (for example, a charge transport layer, a protective layer). Etc.) and other recording materials such as OHP sheets.

[0051]

The resin lubricant of the present invention has excellent dispersibility in the resin component and compatibility with the resin component, and can impart high lubricity to the resin. Further, according to the present invention, it is possible to obtain a resin composition and a molded product that can maintain high lubricity or slidability for a long period of time without impairing the transparency of the resin. Furthermore, the resin composition and the molded article can maintain water repellency, oil repellency, releasability, releasability, stain resistance and lubricity for a long period of time.

[0052]

The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited by these examples. The resin components and polysilane used in the examples and comparative examples are shown below. The measuring methods of the items evaluated in Examples and Comparative Examples are shown below.

[Resin Components] Polycarbonate (PC-1): Nippon GE Plastics Co., Ltd., Lexan Polycarbonate (PC-2): Mitsubishi Gas Chemical Co., Inc.
Manufactured by Iupilon Z300 [Polysilane] Cyclic diphenylpolysilane (PDPS): Decaphenylcyclosilane (5-membered ring) Linear polymethylphenylsilane (PMPS-R): Terminal trimethylsilyl group, number average molecular weight 2700.

[Transparency] With respect to the obtained test piece or coating film, the transparency was visually observed and evaluated according to the following criteria.

[0055] ○: transparent △: Cloudy X: Cloudy.

[Water repellency] The water contact angle of the obtained test piece or coating film was measured.

[Dispersibility] The dispersibility of polysilane in the resin or coating film of the examples was analyzed by XPS method (X-ray photoelectron spectroscopy) while sputtering the silicon distribution in the depth direction in the polycarbonate resin while sputtering. The variation r represented by the formula was determined and evaluated according to the following criteria.

R = | (x ₀ −x ₅₀₀ ) / x ₀ | (where x ₀ represents the weight percentage of the silicon component on the outermost surface, and x ₅₀₀ represents the weight percentage of the silicon component at a depth of 500 nm. Representation) (Evaluation criteria) ◯: r ≦ 0.25 Δ: 0.25 <r ≦ 0.5 x: r> 0.5.

Example 1 Two levels of 100 parts by weight of the resin component and 2 parts by weight or 5 parts by weight of polysilane shown in Table 1 were used as a twin screw extruder (BT.30.L, L manufactured by Plastic Optical Laboratory Co., Ltd.). / D = 42) was melt-kneaded and extruded into a strand to obtain chips. Injection molding machine for the obtained chips (Japan Steel Works, Ltd.)
Manufactured by N100BII, L / D = 22) to prepare a test piece. The obtained test pieces were evaluated for transparency, water repellency and dispersibility.

Example 2 To 400 parts by weight of toluene, 100 parts by weight of the polycarbonate shown in Table 1 and 2 parts by weight of polysilane, 5 parts by weight, or 1 part by weight.
Three levels of 0 parts by weight were added and dissolved by stirring. The obtained solution was applied onto a glass substrate by spin coating and dried in air at 110 ° C. for 1 hour to obtain a coating film having a film thickness of 15 μm. The transparency, water repellency and dispersibility of the obtained coating film were evaluated.

Example 3 To 400 parts by weight of toluene, 100 parts by weight of the polycarbonate shown in Table 1 and 2 levels of 2 parts by weight or 5 parts by weight of polysilane were added and dissolved by stirring. The obtained solution was applied onto a glass substrate by spin coating and dried in air at 110 ° C. for 1 hour to obtain a coating film having a film thickness of 15 μm. The transparency, water repellency and dispersibility of the obtained coating film were evaluated.

Comparative Examples 1 and 2 The same tests as in Examples were carried out using the test pieces prepared in Examples 1 and 2 without adding polysilane. The transparency and water repellency of the obtained test piece were evaluated.

Table 1 shows the evaluation results of Examples 1 to 3 and Comparative Examples 1 and 2.

[0064]

[Table 1]

As is clear from the results shown in Table 1, Example 1
The resin compositions of ~ 3 show high transparency, water repellency and dispersibility. On the other hand, Comparative Examples 1 and 2 have insufficient water repellency.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hironori Sakamoto             4-1-2 Hirano-cho, Chuo-ku, Osaka City, Osaka             Gas Co., Ltd. F-term (reference) 4F071 AA14 AA22 AA31 AA43 AA50                       AA65 AE11 AF04 AF27 AF30                       AF53 AF55 AH03 AH12 BA01                       BB05 BC07                 4J002 BB00W BB02W BB13W BB14W                       BC02W BD03W BG00W BG03W                       CF00W CF06W CF07W CG00W                       CH07W CL01W CL03W CL05W                       CN03W CP21X FD17X GL00                       GQ00                 4J035 JA01 LA03 LB06 LB09

Claims (9)

[Claims] 1. A lubricant for imparting lubricity to a resin, which is represented by the following formulas (1) to (3): (In the formula, R ^{1 to} R ³ are the same or different and are a hydrogen atom,
A hydroxyl group, an alkyl group, an alkoxy group, an alkenyl group, a cycloalkyl group, a cycloalkyloxy group, a cycloalkenyl group, an aryl group, an aryloxy group, an aralkyl group, an aralkyloxy group or a silyl group,
x, y, and z each represent a number of 0 or more, and the total of x, y, and z is a number of 2 or more), and is composed of a polysilane having at least one structural unit among the structural units represented by Lubricant for resin. 2. The following formula (4): The lubricant according to claim 1, which is composed of a cyclic polysilane represented by the formula (wherein R ¹ and R ² are the same as above, and m is a number of 4 or more). 3. The lubricant according to claim 2, wherein in the formula (4), at least one of R ¹ and R ² is an aryl group, and m is a number of 4-12. 4. The following formula (5): (In the formula, R ¹ and R ² are the same as above. R ^{4 to} R ⁶ are the same or different and are a hydrogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkenyl group, a cycloalkyl group,
A cycloalkyloxy group, a cycloalkenyl group, an aryl group, an aryloxy group, an aralkyl group, an aralkyloxy group or a silyl group, and n is a number of 1 or more). The lubricant according to claim 1. 5. In the formula (5), R ¹ is an aryl group,
R ² and R ^{4 to} R ⁶ are aryl groups or alkyl groups,
The lubricant according to claim 4, wherein n is a number of 1 to 100. 6. A resin composition comprising a resin component and the lubricant according to claim 1. 7. The resin component is a polycarbonate resin,
The resin composition according to claim 6, comprising at least one selected from a polyester resin, a styrene resin, an acrylic resin and an amorphous olefin resin. 8. The resin composition according to claim 6, wherein the proportion of the lubricant is 0.05 to 30 parts by weight with respect to 100 parts by weight of the resin component. 9. A molded body formed of the resin composition according to claim 7.