JP2024035066A - Liquid antiadhesive composition for unvulcanized rubber, water-diluted liquid antiadhesive composition solution for unvulcanized rubber, and unvulcanized rubber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid antiadhesive composition for unvulcanized rubber having excellent anti-adhesion properties and an excellent balance between liquid transferability and stability.

SOLUTION: A liquid antiadhesive composition for unvulcanized rubber of the disclosure includes: components (A) to (D) below; and water, in which the mass ratio (A)/(D) of component (A) to component (D) is 5 to 500. (A): Water-soluble polymer other than component (D), (B): Metal soap, (C): Surfactant, and (D): One or more compounds selected from water-soluble polymers in which the thixotropic index (2 rpm/20 rpm) of 2 mass% aqueous solution at 20°C is 4.0 or more.

SELECTED DRAWING: None

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a liquid anti-adhesive composition for unvulcanized rubber, a water dilution of the liquid anti-adhesive composition for unvulcanized rubber, and an unvulcanized rubber.

BACKGROUND ART At rubber production and processing sites, an anti-adhesive agent is applied to the surface of rubber in order to prevent the adhesion of rubber (for example, unvulcanized rubber).

As anti-adhesive agents for rubber, anti-adhesive agents for rubber whose main component is inorganic powder are widely used. These can generally be used in the form of a water-diluted liquid and then attached to the rubber surface (Patent Documents 1 and 2). In addition, various anti-adhesive agents using water-soluble polymers and the like have been proposed in order to reduce dust derived from inorganic powders. For example, in Patent Documents 3 and 4, water-soluble polymers (sodium alginate, CMC, sodium polyacrylate, PVA, etc.), water-soluble polysaccharides (xanthan gum), etc. are blended to increase the viscosity of the water-diluted anti-adhesive agent. This improves the adhesion of the anti-adhesion agent to the rubber surface.

Japanese Unexamined Patent Publication No. 50-149770 JP2013-001720A Japanese Unexamined Patent Publication No. 62-032127 Japanese Patent Application Publication No. 2009-161667

In order to improve the adhesion of the anti-adhesive agent, it is effective to increase the viscosity of the liquid anti-adhesive composition for unvulcanized rubber. On the other hand, if the viscosity becomes too high, the fluidity of the liquid anti-adhesive composition for unvulcanized rubber may decrease, which may affect the liquid transportability (handling properties).

Moreover, when the water-soluble polymer is reduced in order to lower the viscosity of the liquid anti-adhesive composition for unvulcanized rubber, the stability of the liquid anti-adhesive composition for unvulcanized rubber may decrease.

As described above, with conventional compositions using water-soluble polymers and lubricants such as organic particles, it has been difficult to achieve both liquid delivery performance and stability while maintaining anti-adhesion properties.

Therefore, the present invention provides a liquid anti-adhesive composition for unvulcanized rubber that has excellent anti-adhesive properties and an excellent balance between liquid transferability and stability, and a liquid anti-adhesive composition for unvulcanized rubber that can be diluted with water. The purpose is to provide liquid and unvulcanized rubber.

In order to achieve the above object, the liquid anti-adhesive composition for unvulcanized rubber of the present invention includes:
Contains the following components (A) to (D) and water,
It is characterized in that the mass ratio (A)/(D) of the following component (A) and the following component (D) is 5 to 500.

(A) Water-soluble polymer other than component (D) (B) Metal soap (C) Surfactant (D) The thixotropy index (2 rpm/20 rpm) of a 2% by mass aqueous solution at 20°C is 4.0 or more. One or more compounds selected from water-soluble polymers

The water-diluted liquid anti-adhesive composition for unvulcanized rubber of the present invention is characterized by containing the liquid anti-adhesive composition for unvulcanized rubber of the present invention and water.

The unvulcanized rubber of the present invention is characterized in that the components (A) to (D) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention are attached to the surface.

According to the present invention, there is provided a liquid anti-adhesive composition for unvulcanized rubber which has excellent anti-adhesive properties and an excellent balance between liquid transferability and stability, and a liquid anti-adhesive composition for unvulcanized rubber which is diluted with water. liquid, and unvulcanized rubber.

Hereinafter, the present invention will be explained in more detail by giving examples. However, the present invention is not limited by the following explanation.

The liquid anti-adhesive composition for unvulcanized rubber of the present invention may contain, for example, 20% by mass or more of the component (A) and 20 to 20% of the component (B) based on 100% by mass of the total components other than water. 60% by mass, 10 to 25% by mass of the component (C), and 0.01 to 10% by mass of the component (D). This results in, for example, a liquid anti-adhesive agent for unvulcanized rubber that has an excellent balance between anti-adhesive properties, liquid transportability, and stability, as well as an excellent balance between anti-foaming properties and cost.

In the liquid anti-adhesive composition for unvulcanized rubber of the present invention, for example, the mass ratio (A)/(B) of the component (A) and the component (B) is in the range of 0.2 to 4.0. It may be. This results in, for example, a liquid anti-adhesive agent for unvulcanized rubber that has an excellent balance between anti-adhesive properties, liquid transportability, and stability, as well as an excellent balance with scattering properties.

The anti-adhesive treatment method for unvulcanized rubber of the present invention includes, for example, attaching the components (A) to (D) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention to the surface of unvulcanized rubber. It may be a method for anti-adhesion treatment of unvulcanized rubber, characterized by including an anti-adhesion treatment step of performing an anti-adhesion treatment. In the adhesion prevention treatment step, for example, the liquid adhesion prevention agent composition for unvulcanized rubber of the present invention or a water diluted solution of the liquid adhesion prevention agent composition for unvulcanized rubber of the present invention is applied to the surface of the unvulcanized rubber. A step of adhering the components (A) to (D) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention to the surface of the unvulcanized rubber by adhering and further volatilizing water, Good too. More specifically, the adhesion prevention treatment step includes, for example, preparing a liquid adhesion prevention agent composition for unvulcanized rubber in which the liquid adhesion prevention agent composition for unvulcanized rubber of the present invention is adhered to the surface of unvulcanized rubber. It may include an adhesion step and a drying step of drying the liquid anti-adhesive composition for unvulcanized rubber on the surface of the unvulcanized rubber to form a film on the surface of the unvulcanized rubber. .

Hereinafter, specific examples of the present invention will be explained in more detail.

[1. Liquid anti-adhesive composition for unvulcanized rubber]
As mentioned above, the liquid anti-adhesive composition for unvulcanized rubber of the present invention includes:
Contains the following components (A) to (D) and water,
It is characterized in that the mass ratio (A)/(D) of the following component (A) and the following component (D) is 5 to 500.

(A) Water-soluble polymer other than component (D) (B) Metal soap (C) Surfactant (D) The thixotropy index (2 rpm/20 rpm) of a 2% by mass aqueous solution at 20°C is 4.0 or more. One or more compounds selected from water-soluble polymers

The liquid anti-adhesive composition for unvulcanized rubber of the present invention has excellent anti-adhesive properties and has an excellent balance between liquid transferability and stability by having the above-mentioned composition.

Each component of the liquid anti-adhesive composition for unvulcanized rubber of the present invention will be explained below.

[1-1. Component (A): water-soluble polymer other than component (D)]
As described above, the component (A) is a water-soluble polymer other than the component (D). In the liquid anti-adhesive composition for unvulcanized rubber of the present invention, a water-soluble polymer other than the component (A), that is, the component (D) (hereinafter sometimes referred to as "water-soluble polymer (A)"). is a polymer compound that can be dispersed or dissolved in the liquid anti-adhesive composition for unvulcanized rubber of the present invention by putting it in water or heating it after putting it in water. As a result, for example, an effect of coating unvulcanized rubber can be obtained, and an anti-adhesion effect can be obtained. In this way, the component (A) acts, for example, as a film-forming agent. Further, for example, the combination of the component (A) and the component (B) exhibits adhesion prevention properties.

In the liquid anti-adhesive composition for unvulcanized rubber of the present invention, the content of the water-soluble polymer (A) is not particularly limited; may be 20% by mass or more, for example, 25% by mass, 30% by mass or more, 40% by mass or more, or 50% by mass or more, and for example, 70% by mass or less, 60% by mass or less, 40% by mass. % or less or 35% by mass or less. When the content of the water-soluble polymer (A) is 20% by mass or more based on the total mass of components other than water, the effect of forming a film on unvulcanized rubber is excellent, for example. Moreover, the liquid anti-adhesive composition for unvulcanized rubber of the present invention has a water-soluble polymer (A) content of 70% by mass or less based on the total mass of components other than water, so that, for example, , has excellent drying properties and can be dried quickly.

The content (amount) of the component (A) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention is not particularly limited, but, for example, the liquid anti-adhesive composition for unvulcanized rubber of the present invention It may be 1 to 20% by weight, 2 to 20% by weight, 3 to 20% by weight, 4 to 18% by weight, or 5 to 16% by weight based on the total weight of the product. In order to prevent the viscosity of the liquid anti-adhesive composition for unvulcanized rubber of the present invention from increasing too much and deteriorating handling, the content of the component (A) must be The amount is preferably 20% by mass or less based on the total mass of the liquid anti-adhesive composition.

The water-soluble polymer (A) may be, for example, a water-soluble polymer in which a 2% by mass aqueous solution of the water-soluble polymer (A) has a viscosity of 3 to 300 mPa·s at 25°C. By using a water-soluble polymer whose viscosity at 25° C. of the 2% by mass aqueous solution is 3 mPa·s or more, for example, the effect of improving the amount of adhesion to unvulcanized rubber can be obtained. By using a water-soluble polymer in which the viscosity of the 2% by mass aqueous solution is 300 mPa·s or less, for example, an effect of excellent drying properties can be obtained. The viscosity of the 2% by mass aqueous solution may be, for example, 10 mPa·s or more or 100 mPa·s or more, or 200 mPa·s or less or 100 mPa·s or less.

The water-soluble polymer (A) is not particularly limited, but may be, for example, a polymer having a lower limit of solubility in 100 g of water at 25° C. of 1 g or more, 10 g or more, or 50 g or more. In addition, in the present invention, the "polymer" is not particularly limited, but the lower limit of the mass average molecular weight may be, for example, 1000 or more, 5000 or more, or 10,000 or more, and the upper limit of the mass average molecular weight is particularly limited. However, it may be, for example, 500,000 or less.

The type of water-soluble polymer (A) is not particularly limited, and one type may be used alone or a plurality of types may be used in combination. The water-soluble polymer (A) may be, for example, a synthetic water-soluble polymer or a natural water-soluble polymer. The "synthetic water-soluble polymer" may be, for example, an artificially synthesized polymer with a chemical structure that does not exist in nature, or an artificially synthesized polymer with a naturally occurring chemical structure. Further, the "natural water-soluble polymer" may be, for example, a polymer with a chemical structure that exists in nature, extracted from nature, produced, etc. Examples of synthetic water-soluble polymers include, but are not limited to, carboxymethylcellulose (CMC), polyacrylic acid, sodium polyacrylate, polyacrylamide, polyvinyl alcohol (PVA), polyvinylpyrrolidone, polyethylene glycol, polyethylene oxide, methylcellulose, Examples include hydroxyethyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, water-soluble urethane resin, water-soluble melamine resin, water-soluble epoxy resin, water-soluble butadiene resin, and water-soluble phenol resin. Examples of natural water-soluble polymers include, but are not limited to, proteins, welan gum, tamarind gum, tamarind seed gum, gum tragacanth, gum arabic, carrageenan, rhamsan gum, succinoglycan, tara gum, gum karaya, pectin, alginic acid derivatives, and cellulose ether. etc.

The component (A) is preferably at least one selected from the group consisting of polyvinyl alcohol, CMC, polyacrylic acid, sodium polyacrylate, methylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, and hydroxypropylmethylcellulose, More preferably, it is at least one of methylcellulose and hydroxypropylmethylcellulose. From the viewpoint of improving the adhesion amount of the liquid anti-adhesive composition for unvulcanized rubber of the present invention to unvulcanized rubber, it is preferable that the viscosity of the component (A) is not too low. From the viewpoint of improving the drying properties of the liquid anti-adhesive composition for unvulcanized rubber of the present invention, it is preferable that the viscosity of the component (A) is not too high. In the present invention, the "adhesion amount" of the liquid adhesion preventive composition for unvulcanized rubber refers to the adhesion of all components other than water in the liquid adhesion preventive composition for unvulcanized rubber to the surface of the unvulcanized rubber. Refers to quantity.

[1-2. Component (B): Metal soap]
In the liquid anti-adhesive composition for unvulcanized rubber of the present invention, component (B) is a metal soap, as described above. The metal soap (B) is, for example, a metal salt of a higher fatty acid or a derivative thereof other than the sodium salt and potassium salt, and for example, among the metal salts, it is a salt other than the alkali metal salt except for the lithium salt. . The metal soap (B) is a lubricant, and when it is well dispersed with the component (A), the anti-adhesion properties are improved.

As mentioned above, the metal soap (B) is, for example, a metal salt of a higher fatty acid or a derivative thereof other than a sodium salt or a potassium salt, and for example, a metal soap other than an alkali metal salt other than a lithium salt among the metal salts. Examples are calcium salts, magnesium salts, zinc salts, aluminum salts, lithium salts, and barium salts. The higher fatty acid is, for example, a fatty acid having 8 or more carbon atoms, 12 or more, or 14 or more carbon atoms, and the upper limit of the carbon number is not particularly limited, but is, for example, 22 or less, 20 or less, or 18 or less carbon atoms. The higher fatty acid derivative may be, for example, a higher fatty acid substituted with one or more substituents. Specific examples of the metal soap (B) include calcium caprylate, lithium caprylate, zinc caprylate, magnesium caprylate, calcium caprate, lithium caprate, zinc caprate, magnesium caprate, calcium laurate, and lithium laurate. , zinc laurate, magnesium laurate, aluminum laurate, calcium myristate, lithium myristate, zinc myristate, magnesium myristate, calcium palmitate, lithium palmitate, zinc palmitate, magnesium palmitate, calcium stearate, stearic acid Lithium, zinc stearate, magnesium stearate, aluminum stearate, aluminum triotadecanoate, aluminum dioctadecanoate, aluminum monooctadecanoate, calcium octadecanoate, lithium octadecanoate, zinc octadecanoate, magnesium octadecanoate, calcium oleate, olein Lithium acid, zinc oleate, magnesium oleate, calcium behenate, lithium behenate, zinc behenate, magnesium behenate, calcium 12-hydroxystearate, lithium 12-hydroxystearate, zinc 12-hydroxystearate, 12-hydroxy Magnesium stearate, calcium 14-octadecanoate, lithium 14-octadecanoate, zinc 14-octadecanoate, magnesium 14-octadecanoate, calcium 8-octadecanoate, lithium 8-octadecanoate, zinc 8-octadecanoate, 8-octadecanoic acid Magnesium, calcium 6-octadecanoate, lithium 6-octadecanoate, zinc 6-octadecanoate, magnesium 6-octadecanoate, calcium coconut fatty acid, lithium coconut fatty acid, zinc coconut fatty acid, magnesium coconut fatty acid, calcium palm oil fatty acid, palm oil fatty acid Lithium, zinc palm oil fatty acid, magnesium palm oil fatty acid, calcium palm kernel oil fatty acid, lithium palm kernel oil fatty acid, zinc palm kernel oil fatty acid, magnesium palm kernel oil fatty acid, calcium tallow fatty acid, lithium tallow fatty acid, zinc beef tallow fatty acid, tallow fatty acid Examples include magnesium, castor oil fatty acid calcium, castor oil fatty acid lithium, castor oil fatty acid zinc, and castor oil fatty acid magnesium.

The metal soap (B) is preferably a divalent metal salt of a fatty acid with an average carbon chain length of 12 to 22, more preferably a divalent metal salt of a higher fatty acid with an average carbon number of 14 to 20 or 16 to 18. It's salt. Moreover, the metal soap (B) is preferably a calcium salt, a magnesium salt, or a zinc salt. The fatty acids may be saturated or unsaturated, but saturated fatty acids are preferred. Among these, calcium stearate, magnesium stearate, and zinc stearate are preferred from the viewpoint of their large distribution volume and easy availability at low cost.

The content (amount) of the metal soap (B) is not particularly limited, but is, for example, 1 to 20% by mass, 2 to 20% by mass, based on the total mass of the liquid anti-adhesive composition for unvulcanized rubber of the present invention. % by mass, or 3 to 18% by mass, and is, for example, 20 to 60% by mass with respect to the total mass of all components (solid content) other than water. When the mass of the metal soap (B) is 20% by mass or more based on the total mass of all components other than water, it is preferable from the viewpoint of slipperiness of the anti-adhesion film, and when it is 60% by mass or less, unvulcanized rubber This is preferable from the viewpoint of suppressing powder scattering of the liquid anti-adhesive composition and suppressing deterioration of handling properties due to high viscosity. The content (amount) of the metal soap (B) may be, for example, 25% by mass or more or 30% by mass or more, and, for example, 50% by mass or less, based on the total mass of all components (solid content) other than water. It may be 45% by mass or less or 40% by mass or less.

Furthermore, the mass ratio (A)/(B) between the component (A) and the metal soap (B) is not particularly limited, but may be in the range of 0.2 to 4.0, for example, as described above. . If it is 0.2 or more, powder scattering of the liquid anti-adhesive composition for unvulcanized rubber can be easily suppressed, and if it is 4.0 or less, the above-mentioned component (A) and metal soap (B) can be mixed and dispersed. It is easy to obtain the effect of improving adhesion resistance. The lower limit of mass ratio (A)/(B) is more preferably 0.3 or more, or 0.5 or more, and the upper limit is more preferably 4.0 or less, or 3.0 or less. be.

[1-3. Component (C): Surfactant]
In the liquid anti-adhesive composition for unvulcanized rubber of the present invention, the content of the component (C), that is, the surfactant (hereinafter sometimes referred to as "surfactant (C)") is not particularly limited. , for example, from 1 to 10% by mass, or from 2 to 8% by mass, based on the total mass of the liquid anti-adhesive composition for unvulcanized rubber of the present invention, and the total mass of all components (solid content) other than water. For example, it is 10 to 25% by mass. When the content of the surfactant (C) is 10% by mass or more based on the total mass of components other than water, for example, the dispersion effect of the metal soap (B) is improved and separation becomes difficult, and 25% by mass % or less, for example, the dispersibility is moderately suppressed, the adhesion becomes good, and the anti-adhesion property also becomes good. The content of the surfactant (C) may be, for example, 10% by mass or more or 12% by mass or more, and, for example, 20% by mass or less, 18% by mass or less, or 16% by mass, based on the total mass of components other than water. It may be the following. The method for measuring adhesion to unvulcanized rubber is not particularly limited, and can be measured, for example, by the method described in Examples below.

The surfactant (C), for example, imparts dispersibility in water to the liquid anti-adhesive composition for unvulcanized rubber of the present invention, and also improves the adhesion to unvulcanized rubber by improving wettability. improve. The surfactant (C) is not particularly limited, and may be used alone or in combination. For example, it may be at least one of an anionic surfactant and a nonionic surfactant. The anionic surfactant is not particularly limited, and examples thereof include the following (i) to (iv). Further, the nonionic surfactant is not particularly limited, and examples thereof include the following (v).

(i) Carboxylic acid type anionic surfactants such as higher fatty acid salts, alkyl (or alkenyl) ether carboxylates, polyoxyalkylene ether carboxylates, alkyl (or alkenyl) amide ether carboxylates, acylamino carboxylates, etc. (ii) Sulfate ester type anionic surfactant such as higher alcohol sulfate ester salt, polyoxyalkylene higher alcohol sulfate ester salt, alkylphenyl ether sulfate ester salt, polyoxyalkylene alkylphenyl ether sulfate ester salt, glycerin fatty acid ester monosulfate ester salt, etc. Agent (iii) Sulfonic acid type anionic surfactant such as alkanesulfonate, α-olefin sulfonate, linear alkylbenzene sulfonate, α-sulfo fatty acid ester salt, dialkyl sulfosuccinate, etc. (iv) Alkyl phosphate ester Phosphate type anionic surfactants such as salts, polyoxyalkylene alkyl phosphate ester salts, polyoxyalkylene alkylphenyl phosphate ester salts, glycerin fatty acid ester monophosphate ester salts (v) Polyoxyalkylene alkyl ether type nonionic surfactants activator

The counter ion of the anionic surfactant is not particularly limited, but alkali metals such as sodium and potassium, and alkanolamines such as monoethanolamine and diethanolamine are preferable. These may be used alone or in combination.

As the anionic surfactant, dialkyl sulfosuccinate is preferable, and dioctyl sulfosuccinate Na salt is more preferable, since an anti-adhesive composition having better wettability with the surface of unvulcanized rubber can be obtained.

The nonionic surfactant is not particularly limited, but in the present invention, for example, a nonionic surfactant represented by the following formula (1) can be used. The nonionic surfactant of formula (1) below, together with the anionic surfactant, reduces the surface tension of the anti-adhesion agent composition to the surface of the unvulcanized rubber, and also reduces the surface tension of the anti-adhesion agent composition to the surface of the unvulcanized rubber. It is presumed that it has the effect of effectively increasing the adhesion to the rubber surface. However, this assumption does not limit the present invention in any way.

RO-(AO) _n -H (1)

In the formula (1), R represents an aliphatic hydrocarbon group having 8 to 18 carbon atoms. The aliphatic hydrocarbon group may be linear or branched. Further, it may be either saturated or unsaturated. The number of carbon atoms in R is preferably 12 to 16, more preferably 12 to 13, from the viewpoint of excellent dispersibility of component (A). AO represents an oxyalkylene group having 2 to 4 carbon atoms, and n is the average number of moles of AO added. n is, for example, 1-30, 1-25 or 2-15. Specifically, n is 1 or more (that is, not 0) from the viewpoint of preventing the surfactant ability from decreasing and the dispersibility of component (A) from decreasing. Further, from the viewpoint of preventing a decrease in adhesion due to excessively high hydrophilicity, n is 30 or less, or 25 or less. When n is in the range of 1 to 30 or in the range of 1 to 25, the dispersibility of component (A) is further improved, and even when the unvulcanized rubber surface has high hydrophobicity, the unvulcanized rubber It is presumed that adhesion is improved by imparting sufficient viscoelasticity to the dry coating of the liquid anti-adhesive composition. However, this assumption does not limit the present invention in any way.

The oxyalkylene group having 2 to 4 carbon atoms is, for example, a polymer unit formed by adding an alkylene oxide having 2 to 4 carbon atoms (formed by addition polymerization). Examples of the oxyalkylene group having 2 to 4 carbon atoms include an oxyethylene group (EO) to which ethylene oxide is added, an oxypropylene group (PO) to which propylene oxide is added, and butylene oxide. There is an added oxybutylene group (BO). (AO) _n contains at least an oxyethylene group in its structure. (AO) When _n contains multiple types of oxyethylene group (EO), oxypropylene group (PO), and oxybutylene group (BO), these groups may be arranged in a block shape. , may be arranged randomly. Preferably (AO) _n consists of only oxyethylene group (EO) from the viewpoint of excellent balance between hydrophilicity and hydrophobicity.

Specific examples of nonionic surfactants include, but are not limited to, lauryl ether EO, cetyl ether EO, stearyl ether EO, oleyl ether EO, decyl ether EO, isodecyl ether EO, tridecyl ether EO, and secondary alcohol ether. Examples include EO, synthetic alcohol ether EOPO, lauryl ether EOPO, decyl ether EOPO, isodecyl ether EOPO, tridecyl ether EOPO, stearyl ether EOPO, and the like.

[1-4. Component (D)]
As mentioned above, the component (D) is a water-soluble material whose thixotropy index (2 rpm/20 rpm) (hereinafter sometimes simply referred to as "TI value") of a 2% by mass aqueous solution at 20° C. is 4.0 or more. It is one or more compounds selected from polymers. Note that the TI value can be measured, for example, as follows. Add 2 g of water-soluble polymer to 98 g of water, mix at 80° C. for 30 minutes to completely dissolve, and then cool to the temperature to be measured. Thereafter, the viscosity of the prepared aqueous solution was measured using a BH viscometer with the rotation speed set at 2 rpm and 20 rpm. The obtained viscosity values are determined by the following formula (viscosity value obtained at 2 rpm/viscosity value obtained at 20 rpm). The TI value is not particularly limited, but may be, for example, 4.0 or more, or 6.0 or more, and may be, for example, 15.0 or less, 12.0 or less, 10.0 or less, or 8.0 or less. good. Thereby, for example, the stabilizing effect of the liquid anti-adhesive composition for unvulcanized rubber of the present invention can be obtained. In this way, component (D) acts, for example, as a stabilizer.

The content of the component (D) is not particularly limited, but is, for example, 0.01 to 0.8% by mass, 0.03% by mass based on the total mass of the liquid anti-adhesive composition for unvulcanized rubber of the present invention. ~0.6% by mass, or 0.05 to 0.5% by mass, and may be, for example, 0.01 to 10% by mass based on the total mass of all components (solid content) other than water. When the content of component (D) is 0.01% by mass or more based on the total mass of components other than water, for example, the liquid anti-adhesive composition for unvulcanized rubber of the present invention will not separate. If the amount is 10% by mass or less, for example, it is possible to prevent the viscosity of the liquid anti-adhesive composition for unvulcanized rubber of the present invention from increasing too much and worsening the handling. The content of the component (D) may be, for example, 0.1% by mass or more, or 0.5% by mass or more, and, for example, 8.0% by mass or less, or 4% by mass or more, based on the total mass of components other than water. It may be .0% by mass or less.

The component (D) may be, for example, a water-soluble polymer such that a 2% by mass aqueous solution of the component (D) has a viscosity of 3 to 300 mPa·s at 25°C. By using a water-soluble polymer whose viscosity at 25° C. of the 2% by mass aqueous solution is 3 mPa·s or more, for example, the effect of improving the amount of adhesion to unvulcanized rubber can be obtained. By using a water-soluble polymer in which the viscosity of the 2% by mass aqueous solution is 300 mPa·s or less, for example, an effect of excellent drying properties can be obtained. The viscosity of the 2% by mass aqueous solution may be, for example, 10 mPa·s or more or 100 mPa·s or more, or 200 mPa·s or less or 100 mPa·s or less.

The component (D) is not particularly limited, but may be, for example, a polymer having a lower limit of solubility in 100 g of water at 25° C. of 1 g or more, 10 g or more, or 50 g or more.

The type of component (D) is not particularly limited, and only one type or multiple types may be used in combination. The water-soluble polymer (D) may be, for example, a synthetic water-soluble polymer or a natural water-soluble polymer. The "synthetic water-soluble polymer" is, for example, the same as that described for component (A) above. Moreover, the "natural water-soluble polymer" is the same as that explained for the component (A), for example.

The component (D) is preferably at least one selected from the group consisting of diutan gum, xanthan gum, guar gum, locust bean gum, gellan gum, etc., and has a TI value of 4.0 or more.

Moreover, the mass ratio (A)/(D) of the component (A) and the component (D) is in the range of 5 to 500, as described above. If it is 5 or more, good fluidity (handling property) can be ensured, and if it is 500 or less, stability will be good. The lower limit of the mass ratio (A)/(D) of the component (A) and the component (D) is preferably 5 or more, 8 or more, or 10 or more, and the upper limit is preferably 400 or more. 200 or less, or 100 or less.

[1-5. water]
In the liquid anti-adhesive composition for unvulcanized rubber of the present invention, the water content is not particularly limited, but is, for example, 50% by mass or more based on the total mass of the liquid anti-adhesive composition for unvulcanized rubber. , 60% by mass or more, or 70% by mass or more, for example, 95% by mass or less, 90% by mass or less, 85% by mass or less, or 80% by mass or less.

Water serves, for example, to impart fluidity to the liquid anti-adhesive composition for unvulcanized rubber of the present invention, making it easier to handle. Further, water is not particularly limited, and may be, for example, tap water, distilled water, ion exchange water, or the like.

[1-5. Optional ingredients, etc.]
The liquid anti-adhesive composition for unvulcanized rubber of the present invention may or may not contain any optional components other than the components (A) to (D) and water. For example, the liquid adhesive composition for unvulcanized rubber of the present invention may optionally contain additives such as an antifoaming agent, a preservative, a wetting agent, a viscosity agent, and a foreign matter reducing agent, as necessary. It may be included as an ingredient.

Antifoaming agents include, but are not particularly limited to, oil-based antifoaming agents such as castor oil, sesame oil, linseed oil, animal and vegetable oils; isoamyl stearate, distearyl succinate, ethylene glycol distearate, butyl stearate, etc. Fatty acid ester antifoaming agents; Alcohol antifoaming agents such as polyoxyalkylene monohydric alcohol, di-t-amylphenoxyethanol, 3-heptanol, 2-ethylhexanol; di-t-aminophenoxyethanol, 3-heptyl cellosolve , nonyl cellosolve, 3-heptylcarbitol; phosphate ester defoaming agents such as tributyl phosphate, tris(butoxyethyl) phosphate; amine defoaming agents such as diamylamine; polyalkyleneamide , amide antifoaming agents such as acylate polyamine; mineral oil; silicone oil; and the like. The antifoaming agent may be used alone or in combination.

Examples of the preservative include, but are not limited to, isothiazolinone, pyridine, and iodine derivatives. The isothiazolinone derivatives are not particularly limited, but include, for example, benzisothiazolinone (BIT), methylisothiazolinone (MIT, MI), chloromethylisothiazolinone (CMIT, CMI), octylisothiazolinone (OIT, OI). ), dichlorooctylisothiazolinone (DCOIT, DCOI) and derivatives thereof. The pyridine derivatives are not particularly limited, but include pyridinethiol and derivatives thereof. The iodine derivatives are not particularly limited, but include iodo-2-propargylbutylcarbamic acid and derivatives thereof. For example, the preservative may be used alone or in combination.

Examples of wetting aids include, but are not limited to, alcohols, more specifically, for example, methanol, ethanol, hexanol, glycerin, 1,3-butanediol, propylene glycol, dipropylene glycol, Examples include pentylene glycol, hexylene glycol, polyethylene glycol, sorbitol, maltitol, sucrose, erythritol, xylitol, polyethylene glycol, polypropylene glycol, and adducts of polyhydric alcohols with ethylene oxide and propylene oxide. The wettability auxiliary agent may be used alone or in combination.

The viscosity of the liquid anti-adhesive composition for unvulcanized rubber of the present invention is not particularly limited, but for example, the liquid anti-adhesive composition for unvulcanized rubber is difficult to separate and has good handling properties. The viscosity is preferably 25,000 mPa·s or less, more preferably 1,000 to 25,000 mPa·s, and even more preferably It is 2,000 to 25,000 mPa·s, particularly preferably 3,000 to 24,000 mPa·s. From the viewpoint of suppressing or preventing separation of the liquid anti-adhesion agent composition for unvulcanized rubber, it is preferable that the viscosity of the liquid anti-adhesion agent composition for unvulcanized rubber is not too low, making it difficult to handle, such as making it difficult to come out of the container. From the viewpoint of suppressing or preventing deterioration of the properties, it is preferable that the viscosity of the liquid anti-adhesive composition for unvulcanized rubber is not too high.

[2. Method for producing liquid anti-adhesive composition for unvulcanized rubber]
The method for producing the liquid anti-adhesive composition for unvulcanized rubber of the present invention is not particularly limited, but for example, all the components of the liquid anti-adhesive composition for unvulcanized rubber (components (A) to (D) ) and water, and optional components added as necessary). There are no particular limitations on the mixing order or the equipment, equipment, etc. used for mixing. For example, after mixing water with a water-soluble polymer (the above-mentioned component (A), the above-mentioned component (D)) and a surfactant (the above-mentioned component (C)), metal soap (the above-mentioned component (B)) and other Examples include a method of mixing arbitrary components. As mentioned above, the device used for mixing is not particularly limited, but for example, a device having a stirring blade inside a container can be used. Specifically, for example, a liquid mixer such as a general liquid mixer, a vortex mixer, a static mixer, a homogenizer, a line homomixer, etc. can be mentioned.

[3. Method of using liquid anti-adhesive composition for unvulcanized rubber]
The method of using the liquid anti-adhesive composition for unvulcanized rubber of the present invention is not particularly limited, and for example, the method of using the liquid anti-adhesive composition for unvulcanized rubber may be the same as or similar to the method of using a general liquid anti-adhesive composition for unvulcanized rubber. good. Specifically, the method of using the liquid anti-adhesive composition for unvulcanized rubber of the present invention is, for example, as follows, but is not limited thereto.

The anti-adhesive treatment method for unvulcanized rubber using the liquid anti-adhesive composition for unvulcanized rubber of the present invention can be carried out, for example, as described above in the liquid anti-adhesive composition for unvulcanized rubber of the present invention. It may also include an anti-adhesion treatment step in which components (A) to (D) are applied to the unvulcanized rubber surface for anti-adhesion treatment. Attachment to the unvulcanized rubber surface can be performed, for example, by a wet method, which will be described later. The anti-adhesive unvulcanized rubber that has been anti-adhesive treated in this way will not come into close contact with each other even if it is stored, for example, by being stacked or folded. Moreover, such an anti-adhesive treatment method for unvulcanized rubber can also be said to be, for example, a method for producing unvulcanized rubber that has been subjected to an anti-adhesive treatment.

The liquid anti-adhesive composition for unvulcanized rubber of the present invention may be used as it is, or it may be further diluted with water and used in the form of a water-diluted liquid (for example, an aqueous dispersion or an aqueous solution). good. The aqueous liquid anti-adhesion composition for unvulcanized rubber of the present invention may be, for example, an aqueous dispersion of the liquid anti-adhesion composition for unvulcanized rubber, or, for example, the liquid anti-adhesion composition for unvulcanized rubber may be an aqueous dispersion. It may be an aqueous solution of the anti-adhesive composition. In the liquid anti-adhesive composition for unvulcanized rubber of the present invention, the concentration when adhering to the surface of unvulcanized rubber is not particularly limited, but based on the total mass of the liquid anti-adhesive composition for unvulcanized rubber, The total mass of components other than water may be, for example, 0.5% by mass or more, 1% by mass or more, or 2% by mass or more, and for example, 15% by mass or less, 10% by mass or less, or 5% by mass or less. There may be. If the concentration is not too high, effects such as low scattering and rapid drying can be obtained. If the concentration is not too low, for example, effects such as high anti-adhesion properties and high slip properties can be obtained. The liquid anti-adhesion composition for unvulcanized rubber of the present invention can exhibit high anti-adhesion properties even at a low concentration when deposited on the surface of unvulcanized rubber, so it has high anti-adhesion properties even with a small amount of adhesion. Able to demonstrate Further, the viscosity when adhering to the unvulcanized rubber surface is not particularly limited, but may be, for example, 1 mPa·s or more, 5 mPa·s or more, or 10 mPa·s or more, and for example, 30 mPa·s or less, 20 mPa·s. or less, or 15 mPa·s or less. If the viscosity is not too high, effects such as low scattering and quick drying can be obtained, for example. If the viscosity is not too low, for example, effects such as high anti-stick properties and high slip properties can be obtained.

In the adhesion prevention treatment step, for example, as described above, the liquid adhesion prevention agent composition for unvulcanized rubber of the present invention or the aqueous dilution of the liquid adhesion prevention agent composition for unvulcanized rubber of the present invention is applied to the unvulcanized rubber. The components (A) to (D) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention are attached to the surface of the unvulcanized rubber by attaching them to the surface of the rubber and further volatilizing the water. It may be a process. More specifically, the adhesion prevention treatment step includes, for example, preparing a liquid adhesion prevention agent composition for unvulcanized rubber in which the liquid adhesion prevention agent composition for unvulcanized rubber of the present invention is adhered to the surface of unvulcanized rubber. It may include an adhesion step and a drying step of drying the liquid anti-adhesive composition for unvulcanized rubber on the surface of the unvulcanized rubber to form a film on the surface of the unvulcanized rubber. . Such an adhesion prevention treatment process is called, for example, a wet method. The wet method is not particularly limited, and, for example, it can be carried out in the same manner as the wet method for general liquid anti-adhesive compositions for unvulcanized rubber.

In the step of applying the liquid anti-adhesive composition for unvulcanized rubber, for example, the unvulcanized rubber is heated at a high temperature (for example, about 80 to 150°C) due to the heat generated when it is formed into a sheet shape. It is preferable to apply a liquid anti-adhesive composition for vulcanized rubber.

Specific methods for the step of applying the liquid anti-adhesive composition for unvulcanized rubber include, for example, a method of spraying the liquid anti-adhesive composition for unvulcanized rubber onto unvulcanized rubber using a shower device; Examples include a dipping method in which unvulcanized rubber is immersed for a short time in a tank containing a liquid anti-adhesive composition for rubber. Alternatively, a method of applying a liquid anti-adhesive composition for unvulcanized rubber to unvulcanized rubber using a coating device may be employed, or these methods may be used in combination as appropriate.

According to the liquid anti-adhesive composition for unvulcanized rubber of the present invention, as described above, it has excellent anti-adhesive properties and has an excellent balance between liquid transferability and stability.

There is no particular restriction on the type of rubber to which the liquid anti-adhesive composition for unvulcanized rubber of the present invention can be applied, as long as it is unvulcanized rubber. Examples of the rubber types include rubbers such as natural rubber (NR), butadiene rubber (BR), styrene butadiene rubber (SBR), IIR (butyl rubber), and EPDM (ethylene propylene rubber), and multiple types thereof. Mixed rubbers may be mentioned.

Next, examples of the present invention will be described. However, the present invention is not limited to the following examples.

[Example 1]
The liquid anti-adhesive composition for unvulcanized rubber of Example 1 was produced in the following manner.

903.5 g of water was placed in a reaction vessel and heated to 80°C or higher. Thereafter, hydroxypropyl methylcellulose (Metrose 60SH-4000, degree of methoxy substitution 1.9, number of moles substituted with hydroxypropoxy groups 0.25, 2% viscosity 4000 mPa·s, manufactured by Shin-Etsu Chemical Co., Ltd.) was then placed in the reaction vessel. 40 g of gellan gum (Kelcogel AFT, manufactured by Sansho Co., Ltd. (TI value = 6.4)) 0.5 g were added and mixed for 2 hours. The hydroxypropyl methylcellulose is a water-soluble polymer and corresponds to the component (A) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention. The gellan gum corresponds to the component (D) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention. After cooling the mixture obtained by mixing for 2 hours to 30° C. or lower, 40 g of calcium laurate (manufactured by Taihei Kagaku Sangyo Co., Ltd.), coconut alcohol EO adduct (Rheox (registered trademark) CC-150, 10 g (manufactured by Lion Specialty Chemicals), 5 g of sodium alpha olefin sulfonate (Liporan (registered trademark) LB-840, manufactured by Lion Specialty Chemicals), and 1 g of preservative (Suraoff EX, manufactured by Osaka Gas Chemicals Co., Ltd.) By adding and stirring, a liquid anti-adhesive composition for unvulcanized rubber was obtained. Note that the calcium laurate is a metal soap and corresponds to the component (B) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention. The coconut alcohol EO adduct and the sodium alpha olefin sulfonate are both surfactants and correspond to the component (C) in the liquid anti-adhesive composition for unvulcanized rubber of the present invention. The preservative corresponds to any component other than the components (A) to (D).

[Examples 2 to 33, Comparative Examples 1 to 6]
The liquid anti-adhesion agents for unvulcanized rubber of Examples 2 to 33 and Comparative Examples 1 to 6 were prepared in the same manner as in Example 1, except that the type and composition of the raw materials were changed as shown in Tables 2 to 5 below. A composition was produced. The trade name (product name), manufacturer, and characteristics (composition) of each raw material used in the production of the liquid anti-adhesive compositions for unvulcanized rubber in Examples 2 to 33 and Comparative Examples 1 to 6 are shown in Table 1 below. Shown below.

[Production and performance evaluation of water diluted liquid anti-adhesive composition for unvulcanized rubber]
The liquid anti-adhesive compositions for unvulcanized rubber of each of the above Examples and Comparative Examples were diluted 20 times (mass ratio) with water, and the liquid anti-adhesive composition for unvulcanized rubber diluted with water (anti-adhesion agent) was diluted with water. suspension) was produced. Using this water-diluted liquid anti-adhesive composition for unvulcanized rubber, anti-adhesive treatment is performed on unvulcanized rubber, and the results include anti-adhesive properties, slipperiness, scattering properties, stability, and liquid delivery speed (liquid delivery properties). , and viscosity were evaluated. The anti-fouling treatment method and the evaluation method for each of the above-mentioned performances are shown below.

<Evaluation>
(1) Rubber for evaluation The following unvulcanized NR rubber was used as the rubber for evaluation in various evaluations.
(Unvulcanized NR rubber)
For 100 parts by mass of NR (RSS #3), 10 parts by mass of white carbon (manufactured by Tosoh Silica Co., Ltd., trade name "Nip Seal VN-3") and ISAF (Intermediate Super Abrasion Furnace) black (Tokai Carbon ( 15 parts by mass of JSRAROMA (process oil) (manufactured by Nippon Sun Oil Co., Ltd., trade name "Aroma 790"), and zinc white (manufactured by Hakusui Tech Co., Ltd.) , zinc white (2 types)), 1 part by mass of stearic acid (manufactured by NOF Corporation, Tsubaki), and 1 part by mass of 6PPD (manufactured by Ouchi Shinko Chemical Industry Co., Ltd., trade name "Nocrac 6C"). , 1 part by mass of CBS (manufactured by Ouchi Shinko Kagaku Kogyo Co., Ltd., trade name "Noxela CZ-G"), and 1.5 parts by mass of sulfur (manufactured by Tsurumi Chemical Co., Ltd.) (total 162.5 parts by mass) ) Unvulcanized NR rubber was used.

(2) Evaluation of adhesion resistance The unvulcanized rubber described above is kneaded with an open roll at a temperature of 80 to 120°C to form a rubber sheet (thickness: 5 to 8 mm, 60 cm x 15 cm), and the rubber immediately after being rolled out is The sheet was prepared by diluting the liquid anti-adhesive composition for unvulcanized rubber obtained in each of Examples 1 to 33 and Comparative Examples 1 to 6 20 times with water. It was immersed in 1 L of an anti-adhesive composition water diluted solution (anti-adhesive suspension, temperature 40° C.) for about 1 second. Thereafter, the rubber sheet was quickly pulled up vertically, left standing vertically at room temperature, and air-dried. In this way, the rubber sheet (unvulcanized rubber) was subjected to adhesion prevention treatment.

The rubber sheet after the anti-adhesion treatment is cut into 6 cm x 15 cm and two sheets are stacked to form a laminated test piece. A load of ² was applied and the sample was left at 60° C. for 12 hours.

Furthermore, after that, the test piece was returned to room temperature, a 180° peel test was performed using a tensile tester [AGS-500D model, SHIMADZU], and the peel resistance (N/cm) was measured at a tensile speed of 300 mm/min. The smaller the peel resistance (N/cm), the better the anti-adhesion properties.

(3) Evaluation of lubricity The rubber sheet (unvulcanized rubber) was subjected to anti-adhesion treatment in the same manner as in (2) Evaluation of anti-adhesion properties. Next, the dried unvulcanized rubber sheet after the anti-adhesion treatment was cut into a rectangle of 5 x 15 cm. This rubber was placed on a stainless steel plate, the plate was gradually tilted, and the angle of inclination when it slipped and fell was measured. The lower the sliding start angle, the better the slipperiness.

(4) Evaluation of scattering properties The rubber sheet (unvulcanized rubber) was subjected to anti-adhesion treatment in the same manner as in (2) Evaluation of anti-adhesion properties. Next, the dried unvulcanized rubber sheet after the anti-adhesion treatment was cut into a rectangle of 6 x 15 cm, and the weight was measured. The front and back surfaces of this rubber were swept 10 times with a brush, and then the weight was measured again to calculate the amount of scattering. The smaller the amount of scattering, the better the scattering properties.

(5) Evaluation of stability 100 mL of the liquid anti-adhesive composition for unvulcanized rubber before being diluted 20 times (mass ratio) with water was placed in a sealed container, left standing in a constant temperature bath at 20°C, The appearance after being allowed to stand for a week was visually checked to see if there was any separation. If separation of the anti-stick agent composition for rubber cannot be visually confirmed, it indicates that the stability is good.

(6) Evaluation of liquid feeding speed (liquid feeding performance) 100 kg of liquid anti-adhesive composition for unvulcanized rubber before being diluted 20 times (mass ratio) with water was pumped with a diaphragm pump (manufactured by Anest Iwata Co., Ltd.) at 20°C. The liquid was transferred to a height of 3 m through a PVC pipe with a diameter of 20 mm and a length of 7 m at a liquid transfer rate of 30 L/min (product name: "DDP-120B"). The liquid delivery rate was calculated from the weight of the transferred liquid anti-adhesive composition for unvulcanized rubber and the time required for transfer. The faster the liquid feeding rate, the better the fluidity.

(7) Evaluation of viscosity The viscosity of the liquid anti-adhesive composition for unvulcanized rubber before being diluted 20 times (mass ratio) with water was measured 3 days after production. The viscosity was measured using a BH type viscometer (Tokimec Co., Ltd., trade name "Viscometer Model BII") at 25° C. and after 10 rotations at 20 rpm.

Types and compositions of raw materials in the liquid anti-adhesive compositions for unvulcanized rubber of Examples 1 to 33 and Comparative Examples 1 to 6, and anti-adhesive properties, lubricity, scattering properties, stability, and delivery properties evaluated as described above. The evaluation results of each performance of liquid velocity and viscosity are summarized in Tables 2 to 5 below. In Tables 2 to 5 below, the numerical values indicating the usage amount of each raw material (including water) are the content (% by mass) based on the total mass (including water) of the liquid anti-adhesive composition for unvulcanized rubber. be.

As shown in Tables 2 to 5 above, the liquid anti-adhesive compositions for unvulcanized rubber of Examples 1 to 33 had good anti-adhesive properties, slipperiness, scattering properties, stability, and liquid transportability (viscosity). was also good. On the other hand, the liquid anti-adhesive composition for unvulcanized rubber of Comparative Example 1, which did not use component (A), had good lubricity, scattering properties, stability, and liquid transferability, but The adhesion was significantly inferior compared to the examples. The liquid anti-adhesive composition for unvulcanized rubber of Comparative Example 2, which did not use component (B), had good anti-adhesive properties, scattering properties, and stability, but poor lubricity and liquid delivery properties. It was inferior compared to the example. The liquid anti-adhesive composition for unvulcanized rubber of Comparative Example 3 in which the (A)/(D) mass ratio was less than 5 had good anti-adhesive properties, slipperiness, scattering properties, and stability. However, the liquid delivery performance was significantly inferior compared to the examples. The liquid anti-adhesive composition for unvulcanized rubber of Comparative Example 4 in which the (A)/(D) mass ratio exceeded 500 had good anti-adhesive properties, slipperiness, scattering properties, and liquid transfer properties. However, the stability was inferior compared to the examples. The liquid anti-adhesive composition for unvulcanized rubber of Comparative Example 5, which did not use component (D), had good anti-adhesive properties, slipperiness, scattering properties, and liquid transferability, but the stability was poor. It was inferior compared to the example. The liquid anti-adhesive composition for unvulcanized rubber of Comparative Example 6, which did not use component (C), had good lubricity, scattering properties, and liquid transferability, but the anti-adhesion properties and stability were poor. It was inferior compared to the example.

<Additional notes>
Some or all of the above embodiments and examples may be described as in the following supplementary notes, but are not limited to the following.
(Additional note 1)
Contains the following components (A) to (D) and water,
A liquid anti-adhesive composition for unvulcanized rubber, characterized in that the mass ratio (A)/(D) of the following component (A) and the following component (D) is 5 to 500.

(A) Water-soluble polymer other than component (D) (B) Metal soap (C) Surfactant (D) The thixotropy index (2 rpm/20 rpm) of a 2% by mass aqueous solution at 20°C is 4.0 or more. One or more compounds selected from water-soluble polymers (Appendix 2)
Based on 100% by mass of the total mass of components other than water,
20% by mass or more of the component (A), 20 to 60% by mass of the component (B), 10 to 25% by mass of the component (C), and 0.01 to 10% by mass of the component (D). The liquid anti-adhesive composition for unvulcanized rubber according to Supplementary Note 1, comprising:
(Appendix 3)
The liquid anti-adhesion agent for unvulcanized rubber according to Supplementary Note 1 or 2, wherein the mass ratio (A)/(B) of the component (A) and the component (B) is in the range of 0.2 to 4.0. Composition.
(Additional note 4)
An aqueous dilution of a liquid anti-adhesive composition for unvulcanized rubber, comprising the liquid anti-adhesive composition for unvulcanized rubber according to any one of Supplementary Notes 1 to 3, and water.
(Appendix 5)
An unvulcanized rubber characterized in that the components (A) to (D) in the liquid anti-adhesive composition for unvulcanized rubber according to any one of Supplementary Notes 1 to 3 are attached to the surface.

Claims (5)

Contains the following components (A) to (D) and water,
A liquid anti-adhesive composition for unvulcanized rubber, characterized in that the mass ratio (A)/(D) of the following component (A) and the following component (D) is 5 to 500.

(A) Water-soluble polymer other than component (D) (B) Metal soap (C) Surfactant (D) The thixotropy index (2 rpm/20 rpm) of a 2% by mass aqueous solution at 20°C is 4.0 or more. One or more compounds selected from water-soluble polymers Based on 100% by mass of the total mass of components other than water,
20% by mass or more of the component (A), 20 to 60% by mass of the component (B), 10 to 25% by mass of the component (C), and 0.01 to 10% by mass of the component (D). The liquid anti-adhesive composition for unvulcanized rubber according to claim 1, comprising: The liquid anti-adhesion for unvulcanized rubber according to claim 1 or 2, wherein the mass ratio (A)/(B) of the component (A) and the component (B) is in the range of 0.2 to 4.0. agent composition. An aqueous dilution of a liquid anti-adhesive composition for unvulcanized rubber, comprising the liquid anti-adhesive composition for unvulcanized rubber according to claim 1 or 2, and water. An unvulcanized rubber characterized in that the components (A) to (D) in the liquid anti-adhesive composition for unvulcanized rubber according to claim 1 or 2 are attached to the surface.