JP3310108B2 - Method for producing polymer composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a polymer composition, and more particularly, to a method for controlling a phase structure, a low elastic modulus, a uniform dispersibility of a large amount of a low molecular material, and a bleeding (suppression) of a low molecular material. The present invention relates to a method for producing a polymer composition having excellent properties, versatility and industrial productivity.

[0002]

2. Description of the Related Art In recent years, in the field of polymer materials, a polymer composition having a very low elastic modulus, having high performance, high functionality, and versatility, in combination with a variety of applications, for example, a very low elastic modulus. A rubber composition having an elastic modulus and a plastic composition having a very low elastic modulus are required, and a production method for obtaining the composition, that is, a technique for blending a large amount of a low molecular material and a high molecular material is strongly demanded.

[0003] Regarding the phase structure of a blend of polymer materials, which is important in connection with this blending technology, studies on the mechanism of phase separation and the manifestation of physical properties have been conducted academically through thermodynamic treatment, rheological considerations, and the like. It has been widely developed, and thermodynamic studies, in particular, using compatibility between materials and temperature as basic parameters have been actively conducted, and it has been shown that the phase structure of a blend in an equilibrium state is theoretically predicted. As described above, studies on the phase separation mechanism in the compatible region, metastable region, and incompatible region have been actively conducted, but little attention has been paid to the manufacturing method and the manufacturing apparatus for producing the phase structure of such a blend. .

As is well known, it is not easy to blend a large amount of a low molecular weight material and a high molecular weight material to produce a uniform polymer composition having a controlled phase structure. As one production method, there is a method in which both materials are kneaded using a general kneader, but in many cases, the polymer material slips between the rotors, and effective kneading cannot be performed. At first glance, even if it seems that mixing is possible, the low molecular weight material tends to bleed on the surface in such incomplete kneading. Also,
As another production method, there is a method in which a low-molecular material and a high-molecular material having good compatibility are mixed for a long time (in extreme cases, several days) to swell, but this method is not suitable for industrial production.

[0005]

Thus, it was a major problem to find a method for easily producing a polymer material having a low elastic modulus and excellent phase structure and various physical properties.

As is apparent from the above description,
An object of the present invention is to control the phase structure, to have a low elastic modulus,
An object of the present invention is to provide a method for producing a polymer composition which is excellent in uniform dispersibility of a large amount of low molecular material, bleeding (suppression) of low molecular material, versatility and industrial productivity.

[0007]

According to the present invention, there is provided a method for producing a polymer composition comprising at least a low molecular material and a crystal structure or an aggregate structure.
Amorphous parts such as hard blocks that are easy to form
(A) obtaining a low-molecular material holding medium material composite by mixing a medium having a soft block having a structure or the like together ; And (B) mixing the low molecular weight material at 5 ° C. at 100 ° C.
0 ⁵ centipoise has a viscosity of less, the difference between the respective solubility parameter values of the low molecular weight material and the medium material is 3.0 or less, a weight ratio between the low molecular weight material and the medium material is 1.0 or more,
A low molecular material and a medium material are mixed by a mixer at a shear rate V = v
/ T (sec ^-1 ) [v (m / sec): rotational speed of rotor, t (m): clearance between fixed wall and rotor] under shearing conditions of 5.0 × 10 ² or more. Mix the temperature above the melting point or glass transition point of the media material,
The medium material is a step of obtaining a low-molecular material holding medium material composite having a three-dimensional continuous network skeleton structure, and the step (B) is a step in which solubility parameter values of the composite, the low-molecular material and the high-molecular material are obtained. The difference between the low molecular weight material and the high molecular weight material is 4.0 or less, and a high molecular weight material having a weight ratio of 0.5 or more is mixed with a mixer at a rotational speed of 20 to 100 rpm. p. m. And a step of mixing at a mixing temperature of 30 to 100 ° C., which includes both steps.

The present inventors have conducted intensive studies focusing on the materials, mixing conditions, phase structure and physical properties thereof. As a result, when a predetermined low molecular weight material and a medium material are mixed under a specific shearing condition by a mixer, By forming a three-dimensional continuous reticulated skeletal phase structure in which the medium material is uniformly dispersed throughout the system, a composite holding a large amount of low molecular weight material is obtained. It has been found that the above object can be achieved by mixing the above under specific mixing conditions, and the present invention has been completed.

Hereinafter, the present invention will be described in detail. The method for producing a polymer composition according to the present invention comprises mixing a low-molecular material and a medium material under a specific shearing condition and temperature using a mixer, and the medium material has a three-dimensional continuous network skeleton structure. The method comprises a step (A) of obtaining a composite of a holding medium material and a step (B) of mixing the composite with a polymer material or the like under specific mixing conditions using a mixer.

The shearing conditions in the step (A) are extremely important for achieving the object of the present invention, and the shear rate of the mixer is set to V = v / t (sec ^-1 ) (v (m / sec) :
When defined as the rotational speed of the rotor, t (m): clearance between the fixed wall and the rotor, the shear speed V is 5.0.
× 10 ² (sec ⁻¹ ) or more, preferably 1.0 ×
10 ³ (sec ⁻¹ ) or more, and more preferably 2.
It is at least 5 × 10 ⁻³ (sec ⁻¹ ), most preferably at least 5.0 × 10 ³ (sec ⁻¹ ). V is represented by a function of the peripheral velocity v and the clearance t regardless of the size of the mixer, and v and t are related to the size of the mixer, particularly v
Depends on the number of revolutions of the rotor of the mixer and the rotation circumference, that is, the size of the rotor. Therefore, it is difficult to individually define v and t, but usually v is preferably 0.5 (m / sec ⁻¹ ) or more, more preferably 1.0 (m / sec ⁻¹ ) or more, and 2.0 (m / sec ⁻¹ ) or more. m / sec ⁻¹ ) or more is most preferable. Usually, t is preferably 3 × 10 ⁻³ (m) or less, and 2 × 10 ⁻³ (m).
(M) or less, more preferably 1 × 10 ⁻³ (m) or less.

According to the method of the step (A), the medium material has a three-dimensional continuous network skeleton structure, the low-molecular material and the medium material are uniformly dispersed on the order of microns, and a large amount of the low-molecular material is retained. A medium material composite can be easily obtained.

When the shear rate V is less than 5.0 × 10 ² , the resulting composite cannot have a three-dimensional continuous network skeleton structure, and the object of the present invention cannot be achieved.

As the mixer used for mixing in the step (A) of the present invention, any high-shear mixer satisfying the above-mentioned shear rate V can be used.

In general, the equipment used for mixing and kneading materials is a mixer which aims to disperse evenly without exerting almost any shearing force. Kneaders aiming at uniformity of Examples of the mixer include a bomb blender, a tumble mixer, and a Henschel mixer that mainly use the rotation of a stirring blade. On the other hand, as a kneader, an open roll or a Banbury mixer that uses a shearing action between two rolls or a rotor. Alternatively, an extruder with a single screw and a twin screw is used. However, these general-purpose mixers and kneaders all have a shear rate V of 1 × 10
This is not more than about ² (sec ^-1 ), which is not suitable for the step (A) of the present invention since the object of the present invention cannot be achieved.

In the step (A) of the present invention, the mixing temperature of the low molecular weight material and the medium material is equal to or higher than the melting point of the medium material (when the medium material has a crystal structure) or the glass transition point (when the medium material has a cohesive structure). ) It is preferable to keep the above temperature. However, when the compatibility between the low molecular weight material and the medium material is extremely good, it is possible to mix at a temperature lower than the melting point or lower than the glass transition point.

In the step (B), the compound and the polymer material are mixed at a rotation speed of the mixer of 20 to 100.
r. p. m. , Preferably 30 to 80 r. p. m. so,
The reaction is carried out at a temperature of 30 to 100C, preferably 40 to 90C. If the rotational speed and the temperature are out of these condition ranges, the effect of the present invention is difficult to obtain, which is not preferable.

As the mixer used for the mixing in the step (B) of the present invention, any mixer can be used as long as it satisfies the above mixing conditions.

The phase structure is controlled by the combination of the steps (A) and (B), and the high elasticity, the uniform dispersibility of a large amount of low molecular weight material, and the excellent bleeding (suppression) of the low molecular weight material are excellent. The molecular composition can be easily obtained. The unified mechanism by which the composite obtained in the step (A) is uniformly dispersed in the polymer material is not always clear, but by the step (B) of the present invention, many of the composites are high in a state of being divided into fine particles. It is believed that it is retained in the molecular material.
Even if a large amount of low molecular weight material, a medium material and a high molecular weight material are mixed at the same time, or a large amount of low molecular weight material and a high molecular weight material are directly mixed without passing through the steps (A) and (B), A solute polymer composition cannot be obtained.

The low molecular weight material used in the method for producing a polymer composition of the present invention has a viscosity at 100 ° C. of 5 × 10 5
The material is ⁵ centipoise or less, preferably 1 × 10 ⁵ centipoise or less. From the viewpoint of molecular weight, the number average molecular weight of the low molecular weight material is 20,000 or less, preferably 1
It is at most 5,000, more preferably at most 5,000. Usually, a liquid or liquid material at room temperature is suitably used. In addition, both hydrophilic and hydrophobic low molecular materials can be used.

As the low molecular weight material, any material can be used as long as it satisfies the above-mentioned conditions. There is no particular limitation, but the following materials can be exemplified.

Softeners: Softeners for various rubbers or resins, such as mineral oils, vegetable oils, and synthetic oils. The mineral oils include aromatic, naphthenic and paraffinic process oils. Vegetable oils include castor oil, cottonseed oil, linseed oil, rapeseed oil, soybean oil, palm oil,
Palm oil, peanut oil, wood wax, pine oil, olive oil and the like.

Plasticizers: Various ester-based plasticizers such as phthalic acid ester, phthalic acid mixed ester, aliphatic dibasic acid ester, glycol ester, fatty acid ester, phosphate ester, stearic acid ester, epoxy-based plasticizer, etc. Plasticizer for plastic or phthalate type,
NBR plasticizers such as adipate, sebacate, phosphate, polyether and polyester.

Tackifiers: Various tackifiers (tackifiers) such as coumarone resins, coumarone-indene resins, phenol terpene resins, petroleum hydrocarbons, and rosin derivatives.

Oligomers: crown ether, fluorine-containing oligomer, polyisobutylene, xylene resin, chlorinated rubber, polyethylene wax, petroleum resin, rosin ester rubber, polyalkylene glycol diacrylate,
Various oligomers such as liquid rubbers (polybutadiene, styrene-butadiene rubber, butadiene-acrylonitrile rubber, polychloroprene, etc.), silicone oligomers, and poly-α-olefins.

Lubricants: hydrocarbon lubricants such as paraffins and waxes, fatty acid lubricants such as higher fatty acids and oxy fatty acids, fatty acid amide lubricants such as fatty acid amides and alkylene bis fatty acid amides, fatty acid lower alcohol esters, fatty acid polyhydric alcohol esters Lubricants such as fatty acid, polyglycol ester and other ester lubricants, fatty alcohols, polyhydric alcohols, alcohol lubricants such as polyglycol and polyglycerol, metal soaps, mixed lubricants and the like.

In addition, latex, emulsion, liquid crystal, bituminous composition, clay, natural starch, sugar, inorganic silicone oil, phosphazene and the like are also suitable as low molecular weight materials. In addition, beef oil, pig oil, horse oil animal oil,
Bird oil or fish oil: honey, fruit or chocolate,
Organic solvents such as dairy products such as yogurt, hydrocarbons, halogenated hydrocarbons, alcohols, phenols, ethers, acetals, ketones, fatty acids, esters, nitrogen compounds, sulfur compounds, etc .: Alternatively, various medicinal components, soil modifiers, fertilizers, petroleums, water, and aqueous solutions are suitable. These components may be used alone or as a mixture of two or more.

The low-molecular material is selected optimally in consideration of the required characteristics and application of the polymer composition, the compatibility with other components of the present invention such as a medium material and a polymer material, and the like. Used in appropriate amounts.

The medium material used in the method for producing a polymer composition according to the present invention is a material having a function as a medium between a low molecular material and a polymer material, and is an important component for achieving the object of the present invention. is there. In detail, as described above, in order to enable a uniform composition of a large amount of low molecular weight material and high molecular weight material, a low molecular weight material holding a large amount of low molecular weight material using a large amount of low molecular weight material and medium material An object of the present invention is to first obtain a holding medium material composite, and to obtain a polymer composition holding a large amount of a desired low-molecular material by combining this with a polymer material. Here, "holding" the low molecular material means that the low molecular material is uniformly dispersed in the medium material and the high molecular material and does not bleed or bleed is suppressed. Of course, depending on the purpose of the polymer composition, the degree of bleeding can be easily controlled.

The medium material of the present invention has a function as described above, a material for forming a composite which holds a large amount of low-molecular material, the composite in order to sufficiently express the retention capability, according to step (A) A medium material having a three-dimensional continuous network skeleton structure in the object is selected. As a medium material, crystal structure and
Portion where hard block such as cohesive structure is easy to form and ammo
Combine with soft blocks such as rufus structure
Various materials to polymeric materials or components of the polymeric material is is used.

Examples of the medium material include styrene (butadiene styrene, isoprene styrene, etc.), vinyl chloride, olefin (butadiene, isoprene, etc.).
Hydrogenated thermoplastic elastomers such as ethylene propylene, ester, amide, urethane, etc., modified by others, styrene, ABS, olefin (ethylene, propylene, ethylene propylene, ethylene styrene) , Propylene styrene, etc.), acrylate (methyl acrylate, etc.), methacrylate (methyl methacrylate, etc.), carbonate, acetal, nylon, halogenated polyether (chloride polyether, etc.) ), Halogenated olefins (vinyl chloride, ethylene tetrafluoride, fluorinated ethylene chloride, fluorinated ethylene propylene, etc.), celluloses (acetyl cellulose, ethyl cellulose, etc.), vinylidene, vinyl butyral , Alkylene oxide (pro Rubber-modified product of a thermoplastic resin of polyalkylene oxide-based, etc.) and the like.

[0031]

The low-molecular material, the medium material and the low-molecular material holding medium material composite according to the present invention are partially described in JP-A-5-23.
No. 9256 and JP-A-5-194773. As the medium material, those having a three-dimensional continuous network skeleton structure disclosed in this publication are preferably used in the present invention.

The medium material in the present invention is not particularly limited, but may be in a usual bulk form, granular form, gel form, foam form, non-woven fabric form or the like. In addition, a form incorporating a capsule containing a low molecular material can also be used.

In order to obtain a low-molecular material holding medium material composite containing a large amount of low-molecular material and medium material, the difference between the solubility parameter values of the low-molecular material and medium material used is 3.
Both materials are selected so as to be 0 or less, preferably 2.5 or less. If this difference exceeds 3.0, from the viewpoint of compatibility,
It is not preferable because a large amount of the low molecular material is not easily retained, which hinders the lowering of the elastic modulus of the polymer composition, and bleeding of the low molecular material easily occurs.

Further, the weight ratio between the low molecular weight material and the medium material is 1.
0 or more, preferably 2.0 or more, and more preferably 3.0 or more. If the weight ratio is less than 1.0, it becomes difficult to obtain a polymer composition having a very low elastic modulus, and the object of the present invention cannot be achieved.

The polymer material used in the method for producing a polymer composition of the present invention is not particularly limited as long as it is a general-purpose material. That is, a general thermoplastic material or thermosetting material can be widely used.

Examples of the thermoplastic material include styrene (butadiene styrene, isoprene styrene, etc.),
Various thermoplastic elastomers such as vinyl chloride type, olefin type (butadiene type, isoprene type, ethylene propylene type, etc.), ester type, amide type, urethane type, etc., and their hydrogenated and other modified products, styrene type,
ABS type, olefin type (ethylene type, propylene type,
Ethylene propylene, ethylene styrene, propylene styrene, etc.), vinyl chloride, acrylate (methyl acrylate, etc.), methacrylate (methyl methacrylate, etc.), carbonate, acetal, nylon , Halogenated polyethers (chlorinated polyethers, etc.), halogenated olefins (ethylene tetrafluoride, fluorinated ethylene chloride, ethylene propylene fluoride, etc.), celluloses (acetyl cellulose, ethyl cellulose, etc.) And vinylidene-based, vinylbutyral-based, and alkylene oxide-based (propylene oxide-based) thermoplastic resins, and rubber-modified products of these resins.

On the other hand, examples of the thermosetting material, that is, a material which is thermoset in the presence or absence of a curing agent, include, for example, ethylene propylene rubber (EPR, EPDM), nitrile rubber (NBR), butyl rubber, halogenated butyl rubber, General rubbers such as chloroprene rubber (CR), natural rubber (NR), isoprene rubber (IR), styrene butadiene rubber (SBR), butadiene rubber (BR), acrylic rubber, ethylene-vinyl acetate rubber (EVA), polyurethane, and silicone rubber , Fluoro rubber, ethylene acrylic rubber, polyester elastomer, epichlorohydrin rubber, polysulfide rubber, hypalone, special rubber such as chlorinated polyethylene, phenol, urea, melamine, aniline, unsaturated polyester, diallyl phthalate, epoxy alkyd, silicon, polyimide, How the thermosetting resin.

In the present invention, the low molecular weight material and the high molecular weight material are selected so that the difference between the solubility parameter values thereof is 4.0 or less, preferably 3.0 or less. The low-molecular material is mixed with the high-molecular material in the form of a low-molecular material holding medium composite, but in this case also, compatibility between the low-molecular material and the high-molecular material becomes a problem. If the difference of this parameter exceeds 4.0, the low molecular weight material held in a large amount in the composite is difficult to be held in the polymer material due to the compatibility, and the elastic modulus of the polymer composition is lowered. This is not preferable because it causes trouble and bleeding of the low molecular weight material is liable to occur.

The weight ratio between the low molecular weight material and the high molecular weight material is 0.5 or more, preferably 0.8 or more, more preferably 1.0 or more. If the weight ratio is less than 0.5, it becomes difficult to obtain a polymer composition having a very low elastic modulus, which is not preferable.

According to the production method of the present invention, the polymer composition can be controlled to a desired elastic modulus in a low elastic modulus region. For example, an ultra-low elastic modulus of 10 or less in Asker C hardness at a measurement temperature of 25 ° C. can be easily achieved.

In the present invention, in addition to the low molecular material, the medium material, and the high molecular material described above,
Further, the following filler may be blended. That is, clay, diatomaceous earth, carbon black, silica, talc, barium sulfate, calcium carbonate, magnesium carbonate, metal oxides, mica, graphite, flaky inorganic fillers such as aluminum hydroxide, various metal powders, wood chips, Glass powder,
Granular or powdery solid fillers such as ceramic powder, granular or powdery polymer, and other various natural or artificial short or long fibers (eg, straw, wool, glass fiber, metal fiber, other various polymer fibers, etc.), etc. Can be used.

The polymer composition obtained by the production method of the present invention is suitably used in all industrial fields, particularly home appliances, sporting goods, industrial equipment, precision equipment, transportation equipment, construction, civil engineering, medical care, leisure and the like.

The use of the polymer composition obtained by the production method of the present invention will be described below in detail. Since the polymer composition of the present invention can hold a low-molecular material such as a large amount of liquid, the elastic modulus can be controlled to an extremely low range. The present composition can provide products in a wide range of industrial fields. For example, as the vibration proof / damping / buffering material, a sealing member, a packing, a gasket, a fixing member such as a grommet, a mount, a holder, a supporting member such as an insulator, a stopper, a cushion, a cushioning member such as a bumper and the like can be mentioned. In addition, the present composition is, for example, as a product, a cooler, a washing machine, a refrigerator, a fan, a vacuum cleaner, a dryer,
It is preferably used for devices that generate vibration and sound, such as printers and blowers, or home electric appliances. In addition, sporting goods such as gloves, mitts, golf clubs, tennis rackets, etc., shock insoles, various toys, audio equipment, electronic and electrical equipment, or beds and chairs, as well as beds and chairs, especially medical beds that remain in the same posture for a long time as shock absorbers It is suitably used as a material for barber / beauty beds, theater chairs, and vehicle seats subjected to vibration.

It is also used for medical devices such as prostheses, artificial hands, robots, electrode materials for electrocardiogram measurement, and electrode materials for low-frequency therapeutic devices. Further, it is used as an ultra-low hardness rubber for OA equipment, seismic isolation rubber, anti-vibration rubber, and also for racing tires and the like. Also, it is suitable as various molding materials as a low hardness plastic. In addition, since it is possible to control the release of the low-molecular material to the outside, it is also used for various sustained-release materials utilizing release properties such as fragrances, medical agents, and functional materials.

Further, since low-molecular materials such as various liquids can be handled as solids, they are suitable for use as functional materials such as electrolyte films, liquid crystal films, adhesive films, and paint films.

[0047]

The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the scope of the present invention.

Example 1 In the step (A), a low-molecular material and a medium material described below were used, and the two were mixed using a mixer shown in FIG. The mixing method will be described with reference to FIG.

A predetermined amount of a liquid (low molecular material) and a medium material are added to a mixer. Rotor (turbine) connected to rotor (turbine) shaft 12 supported by bearing 10
The high-speed rotation of the rotor 14 causes the agitated material to be sucked in from the lower part of the fixed wall (stator) 16 by utilizing the generated suction action.・ Subject to turbulence
Discharge is performed upward from the discharge hole 18. This ascending flow is transformed by the upper commutation plate 20, descends along the side of the mixer, and returns to the bottom of the mixer again.

The mixing conditions in this example are as follows. Shear speed V: 1.0 × 10 ⁴ (sec ⁻¹ ), rotational peripheral speed v of the rotor: 5.0 (m / sec), clearance t between fixed wall and rotor: 5 × 10 ⁻⁴ (m), Mixing temperature: 170 ° C., mixing time: 1 hour The liquid holding medium material composite obtained in this step (A) has a medium material having a three-dimensional continuous network skeleton structure and containing a large amount of liquid. Regardless, the liquid bleed was small and uniform.

Next, as a step (B), the composite and the polymer material shown below were subjected to a rotation speed of 60 r.
p. m. At 40 ° C. for 10 minutes. The obtained polymer composition was cured at 155 ° C. for 30 minutes. The resulting cured product exhibited an Asker C hardness of 24 at 25 ° C. Each of the polymer composition and the cured product was uniform without bleeding of a low molecular material. The cured product of the polymer composition obtained in this manner uses general-purpose low-molecular materials and high-molecular materials, etc., and is therefore versatile and has a very low elastic modulus holding a large amount of low-molecular materials. It turned out to be a material.

Material 1 Liquid (low molecular weight material) Synthetic aroma oil ¹⁾ Medium water SBR (molecular weight 90,000) Polymer material SBR ²⁾粘度 Viscosity of liquid (100 ° C ) and the mixing weight ratio of 4 liquid and a polymer material between the SP value ³⁾ difference 0.5 liquid and medium material of the difference 0.4 liquid and a polymer material of 6 centipoise SP value ³ of the liquid and the medium ^material) 1) Z-300 manufactured by Nippon Sun Oil Co., Ltd. 2) SBR ( 1507) manufactured by Nippon Synthetic Rubber Co., Ltd. was made into the following mixture in advance and used.

SBR 100 parts by weight White gloss flower CC 3 parts by weight Carbon 3 parts by weight Sulfur 2 parts by weight Others (promoter, etc.) 2.5 parts by weight 3) Solubility parameter value [Comparative Example 1] Comparative Example 1 is the same as in step (A). The same operation as in Example 1 was performed except that the liquid (low molecular weight material) and the medium material were mixed using a mixer under the following mixing conditions.

Shearing speed V: 1.0 × 10 ² (se
c ^-1 ), rotor peripheral speed v: 0.05 (m / sec)
c), clearance between fixed wall and rotor t: 5 × 1
0 ^-4 (m), mixing temperature: 170 ° C., mixing time: 1 hour As a result, a uniform mixture of the liquid and the medium was not obtained.

[0055]

According to the method for producing a polymer composition of the present invention having the above-mentioned constitution, the phase structure is controlled, the low elastic modulus, the uniform dispersibility of a large amount of a low molecular material, and the bleeding (suppression) of the low molecular material are suppressed. It has an excellent effect that a polymer composition having excellent properties and versatility can be easily produced.

[Brief description of the drawings]

FIG. 1 is a sectional view schematically showing a mixer used in Embodiment 1 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bearing 12 Rotor shaft 14 Rotor 16 Fixed wall 18 Discharge hole 20 Commutation plate

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI C08K 5/00 C08K 5/00 (72) Inventor Mihide Fukahori 2-9-7, Arita-cho, Hachioji-shi, Tokyo (56) References Special JP-A-1-287170 (JP, A) JP-A-51-147562 (JP, A) JP-A-51-6243 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C08L 1 / 00-101/16 C08K 3/00-13/08 C08J 3/20 B29B 7/22

Claims (3)

(57) [Claims] At least a low molecular weight material and a crystal structure or agglomeration
Amorph and parts that are easy to form hard blocks such as structures
With soft blocks such as
That a mixture of a medium material, and a step of mixing at least polymeric material as to obtain a low-molecular material-retaining medium material composite (A) with the composite (B), production of the polymer composition a method, step (a), 5 × 10 ⁵ low molecular material at 100 ° C.
A low molecular weight material having a viscosity of not more than centipoise, a difference in solubility parameter between the low molecular weight material and the medium material being 3.0 or less, and a weight ratio between the low molecular weight material and the medium material being 1.0 or more; The material and the medium material are sheared by a mixer at a shear rate V = v / t (sec ⁻¹ ) [v
(M / sec): Rotational peripheral speed of rotor, t (m): Clearance between fixed wall and rotor] under shearing conditions of 5.0 × 10 ² or more, the mixing temperature is changed to the melting point or glass transition of the medium material. Mixing the low-molecular material and the high-molecular material with the low-molecular material and the high-molecular material, and mixing the low-molecular material and the high-molecular material. The difference between the solubility parameter values is 4.0 or less, and the weight ratio between the low molecular weight material and the high molecular weight material is 0.5 or more. . p. m. so,
A mixing step of mixing at a temperature of 30 to 100 ° C.
A method for producing a polymer composition, comprising both steps. 2. The polymer material comprises carbon black.
The polymer material according to claim 1, wherein the polymer material is filled.
A method for producing the polymer composition described above. 3. The polymer material further contains sulfur.
3. The high-density material according to claim 2, wherein the high-molecular material is a polymer material.
A method for producing a molecular composition.