JPH0762145A - Additive for thermoplastic resin - Google Patents

Abstract

PURPOSE:To obtain the title additive which prevents molding troubles occurring at the feed zone of a molding machine, such as the slipping phenomenon or poor intake, by using a specific cyclic alcohol as a major ingredient to produce the additive having a given melting point. CONSTITUTION:The additive comprises as a major component at least one cyclic alcohol selected from stigmasterol, canpesterol, brassicasterol, and beta- citrosterol and has a melting point of 100 deg.C or higher, the amount of the alcohol being preferably 65wt.% or larger. The additive can produce its effect even when containing other ingredients, as long as it has a melting point of generally 100 deg.C or higher, preferably 130 deg.C or higher. Thus, an additive having a reduced cyclic-alcohol content and hence a m.p. below 100 deg.C is ineffective.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a novel thermoplastic resin additive having a high melting point, which is generally applied to thermoplastic resins. More specifically, it is mainly used for one or more cyclic alcohols which are applied to thermoplastic resins such as polystyrene resins, polycarbonate resins, acrylic resins, polyethylene terephthalate resins, polyethylene naphthalate resins and polyamide resins. The present invention relates to a novel thermoplastic resin additive having a melting point.

[0002]

2. Description of the Related Art Conventionally, polystyrene resins, ABS resins, polycarbonate resins, polymethylmethacrylate resins (acrylic resins), polyethylene terephthalate resins, polyethylene naphthalate resins, polyamide resins,
For transparent resins such as polymethylpentene resins, synthetic waxes such as polyethylene wax, polypropylene wax and paraffin wax, calcium stearate are generally used to improve moldability and mold release property. Additives such as metal salts of higher fatty acids such as zinc stearate, and amide-based lubricants such as ethylene bisamide have been used.
However, these additives do not extremely reduce the transparency of the resins in the case of a very small addition concentration of less than 0.01% by weight, but in the case of an addition concentration of 0.01% by weight or more, There was a tendency that the transparency of the resin was significantly lowered. Particularly, at the additive concentration level of 0.02 to 0.5% by weight, which is a general additive concentration level of additives and lubricants,
The phenomenon of deterioration of transparency such as generation of cloudiness (cloud point) and opacification (clouding point) was observed, and the transparency of the resin tended to be significantly decreased.

When the above-mentioned additives are added to engineering resins such as polycarbonate resin, polyethylene terephthalate resin, polymethylmethacrylate resin and transparent polyamide resin, the melting point or softening point of these additives is 60 to 100. Since it is in a relatively low temperature range of ℃, it not only reduces the transparency of the resin, but also
There is a tendency to reduce the thermal stability to those resins,
Also, because it cannot be dried by heating at 100 ° C or higher,
There was a tendency that mechanical properties such as impact strength and tensile test strength of these resins were remarkably lowered.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a novel additive for thermoplastic resins which solves the problems of the conventional additives described above. That is, even when added to or blended with a resin having transparency, the transparency of the resin is not deteriorated, and a polycarbonate resin,
A heat that can be dried without being melted or softened even if it is added and blended (dry blended) to an engineering resin that requires a high resin drying temperature such as polyethylene terephthalate resin, even if it is heated and dried while being dry blended. An additive for a plastic resin is provided.

In addition to this, in extrusion molding such as injection molding, blow molding, sheet extrusion molding and inflation film molding, deterioration of molding processability such as slip phenomenon and defective biting in the feed zone (supply zone) of the molding machine. The present invention provides an additive for a thermoplastic resin that does not generate

[0006]

[Means for Solving the Problems] The inventors of the present invention have conducted extensive studies to solve the problems of the above-mentioned conventional additives and lubricants, and have been used in pharmaceutical applications as cholesterol control agents. It was found that the substance having phytosterol as a main component happened to be added to and blended with the above-mentioned transparent thermoplastic resin to prepare a test sample, and the original transparency of the resin could be maintained. Furthermore, when the present inventors applied this substance to engineering resins such as polycarbonate resin and polyethylene terephthalate resin that require high resin drying temperature, they can be dried at the high resin drying temperature, and It was found that in the feed zone of a molding machine such as molding, blow molding and extrusion molding, a slip phenomenon, a decrease in molding processability such as a defective biting does not occur, and further the application range of the thermoplastic resin was expanded and studied, Has been completed.

That is, the present invention is as follows. 1. One or more cyclic alcohols selected from the group consisting of stigmasterol, campesterol, brassicasterol and β-sitosterol are blended as a main component and have a melting point of 100 ° C. or higher. Additive for thermoplastic resins. 2. 65 weight% or more of cyclic alcohols are mix | blended, The additive for thermoplastic resins of the preceding clause 1 characterized by the above-mentioned. 3. The preceding item 1 characterized by having a melting point of 130 ° C or higher
The additive for thermoplastic resins described.

The additive for thermoplastics of the present invention is selected from the group of stigmasterol (melting point 170 ° C.), campesterol (melting point 157 ° C.), brush casterol (melting point 145 ° C.) and β-sitosterol (melting point 140 ° C.). One or more selected cyclic alcohols are mixed as the main component.

Since these cyclic alcohols were generally extracted from plants, they are called phytosterols in contrast to animal-derived cholesterol. Both
It has a high melting point above 140 ° C. The molecular formulas of these cyclic alcohols are C ₂₉ H ₄₈ O and C ₂₉ , respectively.
₂₈ H ₄₈ O, C ₂₈ H ₄₆ O and C ₂₉ H ₅₀ O, and the structural formulas are as shown in Chemical formula 1, Chemical formula 2, Chemical formula 3 and Chemical formula 4 below.

[0010]

[Chemical 1]

[0011]

[Chemical 2]

[0012]

[Chemical 3]

[0013]

[Chemical 4]

These cyclic alcohols are contained in soybeans, rapeseed, cottonseed, tall seeds, adzuki beans, acne and other marine products, and seafood such as kelp, among other plants, although they are contained in trace amounts. The cyclic alcohols mentioned above are present as a mixture. For example, the cyclic alcohol contained in soybeans is contained at a rate of about 0.08% by weight, and β
-The main component is three cyclic alcohols, sitosterol, campesterol, and stigmasterol. Further, the cyclic alcohol contained in rapeseed is contained at a ratio of about 0.04% by weight, and four kinds of cyclic alcohols of β-sitosterol, stigmasterol, campesterol, and brassicasterol are the main components. .

In order to obtain these cyclic alcohols, for example, from soybeans, the scum distilled in the soybean oil refining and deodorizing steps is crystallized from the cyclic alcohols by using a solvent such as hexane and methanol. Can be obtained. Purity can be increased by further purification.

The additive of the present invention contains one or more of the above cyclic alcohols as a main component, and the preferable ratio thereof is 65% by weight or more, and most preferably 85% by weight or more.

As described above, each of these cyclic alcohols has a very high melting point. Therefore, the melting point of the additive of the present invention in which one or more cyclic alcohols are blended as a main component is the conventional melting point. It is characterized by being significantly higher than the additive for thermoplastic resin, which is particularly important for the present invention.

The additives of the present invention generally have a melting point of 100.
℃ or more, preferably 130 ℃ or more, most preferably 14
As long as it has a melting point of 0 ° C. or higher, the effect of the present invention can be achieved even if it contains other components. Therefore,
The effect of the present invention cannot be expected when the melting point of the additive is lower than 100 ° C. due to the decrease of the content of the cyclic alcohol in the additive. For example, the melting point of a mixture with a higher fatty acid containing 8% cyclic alcohol is 60-
It was 80 ° C.

In the present invention, various components can be blended as other components. For example, commonly used additives such as the above-mentioned synthetic waxes such as polyethylene wax, polypropylene wax, and paraffin wax, metal salts of higher fatty acids such as calcium stearate and zinc stearate, and amide-based lubricants such as ethylene bisamide. Agents, substances such as higher fatty acids that slightly lower or improve the melting point of the additive of the present invention, or modified products of cyclic alcohols such as esterified products. To obtain a modified cyclic alcohol,
For example, a known method such as esterifying a cyclic alcohol and an acid or an acid anhydride in the presence of an esterification catalyst can be employed. The modified product (esterified product) of the cyclic alcohol esterified by this method has a melting point of 70 to 90.
It had dropped to ℃. Therefore, the modified product having such a low melting point is classified as another component.

The addition concentration (blending amount) of the additive of the present invention to the thermoplastic resin varies depending on the kind of the thermoplastic resin, the purity of the cyclic alcohol in the additive, etc., but is generally 0.001-10. % By weight, preferably 0.005
It is 2% by weight, most preferably 0.01 to 0.5% by weight. When the added concentration is less than 0.001% by weight, the effect of the present invention is not so great, and when the added concentration exceeds 10% by weight,
In the case of a transparent thermoplastic resin, the original transparency of the resin tends to be lowered.

The preferred addition concentration in the present invention is 0.0
Although it is in the range of 05 to 2% by weight, this concentration is 0.02 to 0.5% by weight, which is a practical addition concentration of conventional additives.
When compared with the range of 0.1, the conventional additive tends to generate a slip phenomenon at an addition concentration of about 0.5% by weight, while the additive of the present invention has a high addition concentration of 0.5 to 2% by weight. The slip phenomenon does not occur even in. This is one of the important points of the present invention.

As mentioned above, the melting point of the additive of the present invention is remarkably higher than that of the conventional one, but this also has an extremely important meaning when the thermoplastic resin is subjected to molding processing or heat drying at a high temperature. Is to have. For example, engineering resins such as polycarbonate resin, polyethylene terephthalate resin, polyamide resin,
A high drying temperature of 120-140 ° C or higher is required,
Even with such a resin, when the additive of the present invention is added, blocking (bonding between resin pellets) due to melting and softening does not occur, so this additive remains dry blended (added and mixed). It can be dried. Further, even at such high temperature drying, no deterioration phenomenon was observed due to thermal deterioration, decomposition, deterioration, etc. of resins such as polycarbonate resin, polyethylene terephthalate resin and polyethylene naphthalate resin.

As described above, the additive of the present invention is a novel additive that is extremely useful for both transparent resins and other resins in general.

The additives of the present invention are generally applied to thermoplastic resins. Examples of the transparent thermoplastic resin include polystyrene resin, AS resin, transparent ABS resin, polymethyl methacrylate resin, polyethylene terephthalate resin, polyethylene naphthalate resin, transparent polyamide (nylon) resin, polycarbonate resin, polymethylpentene resin. , Polyoxymethylene resin, vinyl chloride resin, vinyldene chloride resin, vinyl acetate and its copolymer resin, polyarylate resin, 1,2-polybutadiene thermoplastic elastomer, styrene butadiene block polymer, styrene butadiene thermoplastic elastomer and the like.

Further, for example, polyacetal, nylon 6, nylon 66, nylon 610, nylon 12, copolymer nylon, polyamide imide, polyether imide, low density polyethylene, high density polyethylene, polyether sulfone, polyamine sulfone, polyphenylene. It is also applied to general thermoplastic resins such as ether, polyphenylene sulfide, polybutylene terephthalate, polypropylene, ethylene-vinyl chloride copolymer, chlorinated polyethylene, chlorinated polypropylene, ABS resin and the like.

Any known method can be adopted for adding and blending the additive of the present invention to these thermoplastic resins. For example, the thermoplastic resin and the additive of the present invention are mixed (dry blended) with a mixer such as a ribbon blender, a drum tumbler, and a Henschel mixer, and then mixed with an ectruder (screw type kneading extruder) and kneaded into pellets. There is a method of converting (granulating).

The thermoplastic resin or composition thus obtained is molded into plates, films, sheets, pipes, filaments, nets, containers, blow containers, crates and the like. Since the melting point is very high, the thermoplastic resin with additives is injection molded,
It does not cause problems such as slip phenomenon in the feed zone (feed zone) of the molding machine screw in blow molding and extrusion molding, deterioration in molding processability such as defective biting, and troubles.

[0028]

【The invention's effect】

1) Retention of resin transparency Even if the additive of the present invention is added in a high concentration range of 0.5 to 2% by weight with respect to the thermoplastic resin, the transparency of the resin is not deteriorated at all.

2) High temperature processability The thermoplastic resin in which the additive of the present invention is blended is from 120 to
Even if it is dried at a high temperature of 130 ° C., it does not melt, soften, or fuse, and can be passed through the drying step while being added and blended (dry blended). Further, the additive of the present invention is excellent in thermal stability, and when added and blended with an engineering resin such as a polycarbonate resin, a polyethylene terephthalate resin, a polyethylene naphthalate resin which requires high temperature molding at 300 ° C. or higher, However, there is substantially no change in the molecular weight of these resins, heat deterioration, changes such as decomposition, or alteration.

3) Molding processability The thermoplastic resin containing the additive of the present invention is used in the molding process such as slip phenomenon in the feed zone of the molding machine screw and defective biting, which are observed in conventional additives. Does not cause deterioration of formability (poor supply, etc.).

[0031]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples without departing from the gist of the present invention. For transparency,
Based on the transparency of the unadded thermoplastic resin, while visually comparing and comparing the degree of transparency decrease and the degree of coloring of the resin for each addition concentration (mixing amount of additive),
Measurement The transmittance was measured with a spectrophotometer. The melting point of the additive was measured according to JIS K-2235 Petroleum Wax 5.3 “Melting Point Test Method”.

[0032]

Example 1 A transparent polystyrene (GPPS) having a density of 1.05 g / cm ³ and a melt flow rate (MFR) of 7.5 g / 10 min (Stylon 666, trade name of Asahi Kasei Kogyo Co., Ltd.) was used. Additives (stigmasterol (16%), campesterol (24%), brassicasterol (6%), β-sitosterol (45
%) And other waxes (9%),
The melting point of the composition is 140 ° C., 0.001 to 2.0% by weight
Was added and compounded within the range. Then, using an injection molding machine with a mold clamping pressure of 40 tons, a three-stage plate-shaped mold having a wall thickness of 1 mm, 2 mm, and 3 mm was attached, a molding temperature of 240 ° C., an injection pressure of 40 kg / cm ² , a molding cycle of 60 sec / cy
Under the molding conditions of cle, three-stage flat plate-shaped molded products (plates) having wall thicknesses of 1, 2, and 3 mm were prepared. Based on a molded product (plate, virgin, wall thickness 1 mm) without additives, the transparency and light transmittance of the molded product for each added concentration (mixing amount of additive) is based on the standard (light transmittance 89.5%). Comparing with a thickness of 1 mm, the transparency and light transmittance of Styron 666 (transparent polystyrene) were not different at the addition concentration up to 2.0% by weight. Only the main results are shown in Table 1. In the table,% of the compounding amount represents% by weight.

[0033]

Comparative Example 1 Instead of the additive of Example 1, an OP wax (montan ester wax) which has been generally used in the past is added and blended, and the same molding apparatus and molding conditions as in Example 1 are used. A stepped flat plate shaped product (plate) was prepared. When the transparency and the light transmittance of this molded product were compared and measured, a decrease of the light transmittance of about 2% was observed in the low concentration compounding of the addition concentration of 0.1% by weight, and the addition of 0.5% by weight was observed. Decrease in light transmittance of about 8% at concentration
It also became. Further, at the addition concentration of 2% by weight, the reduction of the light transmittance reached to about 30%, and the molded product showed a cloudy state. Only the main results are shown in Table 2.

[0034]

Example 2 Density 1.20 g / cm ³ , Refractive index 1.58
5, transparent polycarbonate resin (PC) having a light transmittance of 89% (thickness of 3 mm) and standard flow characteristics (Panlite L
-1225, trade name of Teijin Kasei Co., Ltd., the additive of the present invention used in Example 1 was added and blended in the range of 0.001 to 2.0% by weight. Then, using an injection molding machine with a mold clamping pressure of 40 tons, the wall thickness is 1 mm, 2 mm, 3 mm
3 stage flat mold is attached, molding temperature 300 ° C, injection pressure 60 kg / cm ² , molding cycle 60 sec / c
A three-stage flat plate-shaped molded product (plate) having a wall thickness of 1, 2, and 3 mm was prepared under the molding conditions of Cycle. Using the molded product (plate, virgin, wall thickness 1 mm) without additives as a reference (light transmittance 87.9%), the transparency and light transmittance of the molded product for each added concentration were compared at a wall thickness of 1 mm. By the way
Up to an addition concentration of 2% by weight, there was no difference from the transparency and light transmittance of Panlite L-1225. Only the main results are shown in Table 3.

[0035]

Comparative Example 2 The OP wax used in Comparative Example 1 was added and blended in place of the additive of Example 2, and a three-stage flat plate-shaped product (plate) was prepared by using the same molding apparatus and molding conditions as in Example 2. )made. When the transparency and the light transmittance of this molded product were comparatively measured at a thickness of 1 mm, a decrease in the light transmittance of about 1.7% was observed in a low-concentration compounding with an additive concentration of 0.1% by weight, and 0 At the addition concentration of 0.5% by weight, the decrease in light transmittance was about 5%. Further, at the addition concentration of 2% by weight, the reduction of the light transmittance reached up to about 32%, and the molded product plate showed a cloudy state. Only the main results are shown in Table 4.

[0036]

Comparative Example 3 In place of the additive of Example 2, Hoechst wax PE-520 (polyethylene wax) which is generally used is added and blended, and the same molding equipment and molding conditions as in Example 2 are used. As a result, a three-stage flat plate-shaped molded product (plate) was prepared. When the transparency and the light transmittance of this molded product were comparatively measured at a wall thickness of 1 mm, a decrease in the light transmittance of about 40% was observed in a low-concentration mixture having an addition concentration of 0.1% by weight, and 0.5. At the concentration of addition by weight, the decrease in light transmittance was about 70%. Further, at the addition concentration of 2 parts by weight, the transparency of the molded product was not observed at all, and the decrease in the light transmittance thereof was 85% or more, and the molded product showed an opaque opalescent state. Only the main results are shown in Table 5.

[0037]

Example 3 In place of the additive of Example 1, the additives of the present invention (stigmasterol (5%), campesterol (20%), β-sitosterol (36%) and other waxes (39%) were used. Except that the compound consisting of) and the melting point of the compound of 100 ° C.) was used, a three-stage flat plate shaped article was prepared in the same manner as in Example 1, and the transparency and the light transmittance were compared in the same manner. Similar results to Example 1 were obtained.

[0038]

Example 4 Density 1.20 g / cm ³ , Refractive index 1.58
5, transparent polycarbonate resin (PC) having a light transmittance of 89% (thickness of 3 mm) and standard flow characteristics (Panlite L
-1225, trade name of Teijin Kasei Co., Ltd., the additive of Example 1 was added in the range of 0.001 to 2.0% by weight, and dry blending (dry mixing) with a drum blender.
did. Then, using a high temperature oven PHH-100 type hot air ring type constant temperature dryer, a drying temperature of 130 ± 1 ° C.,
Heat drying was performed under the condition that the heating and holding time was 5 hours. Based on Panlite L-1225 (virgin) pellets, the heat-dried pellets for each addition concentration were compared, and the molten state of the additive and the fused state of the dried pellet were compared and observed, and the additive of the present invention was added. In the blended (dry blended) resin composition, even at a drying temperature of 130 ± 1 ° C., melting of the additive on the pellet surface and fusion of the pellets did not occur at the addition concentration up to 2.0% by weight.
Only the main results are shown in Table 6.

[0039]

Comparative Example 4 Instead of the additive of Example 4, the OP wax used in Comparative Example 1 was added and blended (dry blended),
Drying was performed using the same heating and drying apparatus and heating conditions as in Example 4. As a result, melting and melting of OP wax on the pellet surface was observed at all addition concentrations, and further, fusion and coagulation (blocking) between pellets occurred. In particular, at the addition concentration of 0.1% by weight or more, the fusion and the melting phenomenon occurred violently. Only the main results are shown in Table 7.

[0040]

Comparative Example 5 In place of the additive of Example 4, Hoechst wax PE-520 used in Comparative Example 3 was added, blended (dry blended), and dried by the same heating and drying apparatus and heating conditions as in Example 4. I went. As a result, as in the case of Comparative Example 4, at all addition concentrations, the Hoechst wax PE-520 was melted and melted on the surface of the pellet, and fusion and cohesion (blocking) between the pellets occurred violently. In particular, at the addition concentration of 0.1% by weight or more, the fusion and the melting phenomenon occurred violently.
Only the main results are shown in Table 8.

[0041]

Example 5 A transparent polystyrene (GPPS) having a density of 1.05 g / cm ³ and a melt flow rate (MFR) of 7.5 g / 10 min (Stylon 666, a trade name of Asahi Kasei Kogyo Co., Ltd.) was used. The additive of the present invention used in 1. was added and blended in the range of 0.001 to 2% by weight.
Next, a 30 mm single-screw extruder was attached with a die for strand with 2 holes having a nozzle diameter of 4 mm, and screw L / D
An extrusion molding test was conducted under the conditions of No. 26, resin temperature 210 ° C., and kneading / extrusion conditions of screw rotation speed of 100 rotations. Based on the production amount (extrusion discharge amount) of Styron 666 (virgin) to which no additive was added as a reference (5680 g / hr), a comparative test of the extrusion discharge amount for each addition concentration was performed. In addition, a comparative observation was performed on the occurrence of the slip phenomenon in the feed zone of the extruder screw. As a result, in the resin composition to which the additive of the present invention was added and compounded, the extrusion discharge amount did not decrease at all in the addition concentration range up to 2.0% by weight. Only the main results are shown in Table 9.

[0042]

Comparative Example 6 Instead of the additive of Example 5, the OP wax used in Comparative Example 1 was added and blended, and a comparative test of the extrusion discharge amount was performed using the same extrusion molding apparatus and extrusion conditions as in Example 5. It was As a result, in the low concentration region where the addition concentration of OP wax was 0.05% by weight, the extrusion discharge amount was reduced by about 15%. Further, the decrease in the extrusion discharge amount at the addition concentration of 0.1% by weight was 30% or more. Also,
When the addition concentration is 0.2% by weight or more, the slip phenomenon is severely observed in the feed zone of the extruder screw, the discharge from the nozzle of the extruder die becomes unstable, and the corrugation phenomenon of the discharge occurs violently. did. The result is
Only the main ones are shown in Table 10.

[0043]

Example 6 In place of the additive of Example 1, the additives of the present invention (stigmasterol (5%), campesterol (20%), β-sitosterol (36%) and other waxes (39%) were used. Except that the composition consisting of (1) and the melting point of the composition of 100 ° C.) was used, and the extrusion molding test was performed with Example 5 to perform a comparative observation with respect to the extrusion discharge amount and the occurrence of the slip phenomenon. showed that.

[0044]

Example 7 Density 1.20 g / cm ³ , Refractive index 1.58
5, transparent polycarbonate resin (PC) having a light transmittance of 89% (thickness of 3 mm) and standard flow characteristics (Panlite L
-1225, trade name of Teijin Kasei Co., Ltd., 0.001 to 2.0% by weight of the additive of the present invention used in Example 1
Was added and compounded within the range. Next, a 30 mm single-screw extruder was attached with a 2-hole strand die having a nozzle diameter of 4 mm, a screw L / D 26, a resin temperature of 300 ° C.,
An extrusion molding test was conducted under the kneading extrusion conditions of the screw rotation speed of 100 rotations. Panlite L-1225 without additives
(Virgin) extrusion discharge rate as standard (6100g / hr)
Then, a comparative test of the extrusion discharge amount for each added concentration was performed. In addition, a comparative observation was performed on the occurrence of the slip phenomenon in the feed zone of the extruder screw. as a result,
In the resin composition containing the additive of the present invention, the extrusion discharge amount did not decrease at all in the addition concentration range of 0.001 to 2% by weight. Further, at the addition concentration of 2.0% by weight, no slip phenomenon was observed in the feed zone of the extruder screw. Only the main results are shown in Table 11.

[0045]

Comparative Example 7 The OP wax used in Comparative Example 1 was added and blended in place of the additive of Example 7, and a comparative test of the extrusion discharge amount was performed using the same extrusion molding apparatus and extrusion conditions as in Example 7. It was As a result, in the low concentration region where the addition concentration of OP wax was 0.05% by weight, the extrusion discharge amount was reduced by about 10%. In addition, the decrease in the extrusion discharge amount was 25% or more when the addition concentration was 0.1% by weight. Further, in the case of the addition concentration of 0.2% by weight or more, the occurrence of the slip phenomenon was observed in the feed zone of the extruder screw,
The discharge from the nozzle of the extruder die became unstable, and the occurrence of a wavy phenomenon of discharge was observed. Only the main results are shown in Table 12.

[0046]

[Table 1]

[0047]

[Table 2]

[0048]

[Table 3]

[0049]

[Table 4]

[0050]

[Table 5]

[0051]

[Table 6]

[0052]

[Table 7]

[0053]

[Table 8]

[0054]

[Table 9]

[0055]

[Table 10]

[0056]

[Table 11]

[0057]

[Table 12]

Claims (3)

[Claims] 1. A main component is one or more cyclic alcohols selected from the group consisting of stigmasterol, campesterol, brassicasterol and β-sitosterol, and having a melting point of 100 ° C. or higher. An additive for a thermoplastic resin, which is characterized in that 2. The additive for thermoplastic resins according to claim 1, wherein the cyclic alcohol is blended in an amount of 65% by weight or more. 3. The additive for thermoplastic resin according to claim 1, which has a melting point of 130 ° C. or higher.