JP2017112960A - Milk feeding livestock teat pack forming material, method for preventing mastitis of milk feeding livestock and milk feeding livestock teat pack forming kit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material in which the material itself can keep a function of closely adhering to teats for a long term and preventing deposition of high adhesive materials such as feces, urine, sludge and soil, and the material is used for forming packs to closely adhere to the teats of the milk feeding livestock.SOLUTION: A material used for forming packs to closely adhere to teats of milk feeding livestock is characterized by containing at least (A) latex components comprising polymer compounds not containing fluorine atoms and silicon atoms in molecules, (B) latex components comprising polymer compounds containing the fluorine atoms and/or the silicon atoms in molecules, or (C) components selected from silicon-based and/or fluorine-based water repellent/oil repellent compounds.SELECTED DRAWING: None

Description

The present invention relates to a material for forming a nipple pack for dairy animals, a method for preventing mastitis in a dairy animal, and a nipple pack forming kit for a dairy animal.
Hereinafter, livestock that produce drinking milk or processed milk such as dairy cows, goats, and sheep may be collectively referred to as “dairy livestock”. In addition, a protective film that covers the entire nipple (nipple) of a dairy livestock and prevents infection such as mastitis may be referred to as a “nipple pack for dairy livestock”.

Since a typical dairy livestock is a dairy cow, dairy cow will be described below. One of the serious diseases of dairy cows is mastitis. Mastitis is an infectious disease that occurs when bacteria and other microorganisms enter the breast through the mouth of the teat and colonize and proliferate. It is a disease that continues to cause significant economic losses. There are various types and symptoms of mastitis, but it is easy to find mastitis with so-called clinical symptoms such as redness of the breast, pain, swelling, fever or appearance of milk soul in milk. As the treatment spreads, it is decreasing worldwide. However, abnormalities such as an increase in the number of somatic cells are found when milk is examined, although these clinical symptoms are not shown.So-called latent mastitis causes a great economic loss such as a decrease in milk production and milk quality. Despite this, its control has not progressed slowly.

In order to control such mastitis, the following priority measures called “5-points” are currently recommended worldwide.
(1) Hygiene measures such as milking facilities including inspection and maintenance of milkers,
(2) Nipple disinfection,
(3) Treatment of clinical mastitis,
(4) Dry cow therapy (DCT)
(5) The problem cow's cage (Non-Patent Documents 1, 2, and 3)

Among the measures listed above, (1) hygiene measures such as milking facilities including inspection and maintenance of milkers, that is, hygiene management of barns is the most basic measure. It is important to remove feces and urine promptly in the hygiene management of barns. Dairy cows eat a lot of feed and drink a lot of water a day. In addition, it excretes more feces and urine than is eaten. A cow that produces an average of about 25 kg of milk a day excretes about 45 kg of feces and about 15 kg of urine. The main components of feces are unabsorbed proteins and saccharides (hemicellulose, cellulose, lignin, etc.). The number of defecations per day for dairy cows is 15 to 20, and the interval is usually said to be 30 to 90 minutes. It is almost impossible to remove the stool and urinate every time, and the floor of the lively barn is contaminated with manure and mud. In addition, manure or the like has a high viscosity and is currently difficult to remove once attached to a teat or the like. Ideally, measures should be taken so that feces and urine do not adhere to the breast, particularly the nipple, or even if it adheres, it will come off quickly and naturally. In order to prevent mastitis, it is important to maintain and manage the barn cleanly. However, there is a limit to cleanly maintaining and managing a barn, and the following means have been proposed.

          One of them is nipple disinfection. Nipple disinfection of dairy cows is one of the most important preventive measures for mastitis control. Dodd et al. In the UK developed and implemented a teat disinfectant in 1952, and in Japan as part of the milk quality improvement project from around 1965. The use has come into effect and today it is 40% popular.

                  Nipple disinfection currently commonly practiced is a method (so-called post-dipping method) in which the nipple is immersed in a dipping agent (sterilizing and disinfecting aqueous solution) after milking, sterilizing and disinfecting mastitis-causing bacteria adhering to the surface of the nipple skin, The moisturizing agent is intended to prevent mastitis by improving the condition of the nipple skin such as cracks and suppressing the growth of bacteria on the surface of the nipple. Various post-dipping agents have been proposed so far (for example, Patent Document 1). Patent Document 2), and many products are commercially available on the market. However, in a study conducted by the National Institute for Research in Dairying in the United States, new infections in 12 months of post-dipping dairy herds were reduced by 50%, but they were already infected. It was only a 14% decrease from the whole breast. From this, it is reported that the subclinical infection by the existing bacteria was sustained. In other words, this post-dipping reduces the rate of new infections caused by transmitted mastitis-causing bacteria, but it cannot be expected to be as effective as it is for controlling so-called environmental mastitis-causing bacteria. .

            In other words, only after disinfection after milking (post-dipping), the duration of the effect (for example, after application, when the teat comes into contact with the cow bed, the medicinal solution is removed from the teat and the effect is lost. (2 hours) is relatively short, and the bactericidal effect disappears until the next milking, so that there is a limit to the effect on environmental causative bacteria.

              On the other hand, as a means to protect dairy cow nipples from mastitis-causing bacteria, a technique that completely covers the dairy cow nipples with a suitable polymer to prevent bacteria and other microorganisms from entering the breast through the mouth of the nipple. Proposed

          For example, Patent Document 3 states that “in the dry period of dairy cows, which is prone to infection with mastitis, for about 2 to 9 days at the beginning of the dry period and for about 2 to 9 days before delivery, Mastitis in dairy cattle characterized by physically preventing infection of mastitis-causing bacteria by immersing the nipple in a nipple sealant and keeping the nipple in a state of forming a thin film that blocks the mouth of the nipple (Prevention method) "(Claim 1). Further, Patent Document 3 discloses a nipple sealant for immersing the nipple mouth, a fluorocarbon substitute such as tetrahydrofuran, acetonitrile, trichloroethane, trichloroethylene, and methylene chloride, and an aromatic compound such as toluene and xylene as a solvent. A rubber material selected from butadiene resin, polyvinyl alcohol, liquid butyl rubber, liquid rubber, natural rubber, butyl rubber, nitrile rubber, chloroprene rubber, vinyl acetate rubber and the like is dissolved at a concentration of 5 to 15%. However, since the rubber-based material of Patent Document 3 requires time for the solvent to volatilize and form a pack, if the cow rests on the side of the bed before the pack is formed after the pack is attached, the liquid is dissipated and the pack is not formed. Had. Further, when the rubber-based material is dried, harmful organic solvents such as acetonitrile and toluene are volatilized, which may be harmful to human health or dairy cow health.

Patent Document 4 discloses “a teat pack containing at least water, a calcium salt, and an alginate and having a viscosity before gelation of 5,000 to 1,500,000 mPa · sec.”, And further, the teat pack. It has been proposed that a teat can be protected from mastitis-causing bacteria and the like for a long time by incorporating an antibacterial agent such as iodine therein.
However, in the teat pack described in Patent Document 4, it is explained that a paste obtained by kneading with a solvent such as water is applied to the teat immediately before using a powder component made of alginate or calcium sulfate. Has been. Calcium sulfate is insoluble in water, that is, it is a hydrophobic component, and it is very difficult to uniformly disperse it in a hydrophilic solvent such as water. In addition, there is a problem in that the powder component is scattered around when kneading. Patent Document 4 states that the above problem is alleviated by predispersing a powdered alginate or calcium sulfate component in a hydrophilic solvent such as glycerin or propylene glycol. Even in such a case, it is difficult to disperse calcium sulfate having a hydrophobic surface in a hydrophilic solvent, so that sedimentation separation occurs over time. As a result, in some cases, when used (when kneading with water), the dispersibility is impaired, and kneading takes time or bubbles are mixed, resulting in a uniform nipple pack. As a result, the adhesiveness to the nipple deteriorated, and it was easy to peel from the nipple.

              Patent Document 5 discloses a method for preventing mastitis of a lactating animal by immersing the nipple of the lactating animal in a composition containing a polymer latex and a water-soluble polymer thickener in an aqueous dispersion medium. . Latex is a dispersion of a polymer compound, and when the dispersion is immersed in the nipple of a dairy livestock, a film is gradually formed over time, and as a result, the nipple is protected. The teat protection method using such a latex-containing composition is considered to be a useful technique because of the simplicity of the operation method. That is, in the technique described in Patent Document 5, as a means for protecting a dairy cow's nipple from mastitis-causing bacteria, the entire nipple of the dairy cow is completely covered with an appropriate polymer latex so that bacteria and other microorganisms can be removed from the nipple mouth. It is a technology that prevents entry into the breast.

In any of the inventions described in Patent Documents 3 to 5 described above, a so-called “milking livestock nipple pack” is formed on the entire nipple of a dairy cow with rubber-based or polymer latex, and the entire nipple is completely covered. It is a technology that prevents bacteria and other microorganisms from entering the breast through the mouth of the nipple, and has a certain effect. However, it cannot be avoided from the damage caused by the adhesion of faeces, urine, mud, etc. remaining in the barn.

Therefore, the functions required for an ideal “nipple pack for dairy livestock” are primarily as follows: Do not peel off, especially keep the nipple mouth completely closed. At the same time, (b) the nipple pack itself has a function to prevent high adhesion such as feces, urine, mud, etc. It is to provide such antifouling properties, so-called high water and oil repellency.

Japanese Patent Laid-Open No. 8-175899 JP 11-155404 A JP 2000-41529 A JP 2006-50911 A US Pat. No. 4,113,854

Livestock Encyclopedia Editorial Committee Representative, Hiroshi Nagasawa, February 20, 1996, Livestock Encyclopedia, Yokendo Co., Ltd. Dairy University Encyclopedia Physiology, Breeding Technology, Environmental Management, March 31, 2011, Japan Rural Culture Association Kodansha Scientific Co., Ltd., New Animal Husbandry Handbook, September 10, 2006, Kodansha Co., Ltd.

As a result of comprehensively examining the above-described conventional techniques, the problem to be solved by the invention is that the entire surface of the nipple of the dairy livestock is coated, and adhesion, elasticity, abrasion resistance, durability, aging resistance, oil resistance In addition to being excellent in weather resistance, breast shape followability, etc., milk production with excellent antifouling properties against feces, urine, mud, soil, and other highly sticky substances remaining on the floor of a barn or pasture A material for forming nipple packs for livestock, a method for preventing mastitis in dairy livestock, and a simple method that completely covers the entire nipple of dairy livestock at any time, and is produced from mastitis-causing bacteria. It is an object of the present invention to provide a nipple pack forming kit for dairy animals that can form a nipple pack that protects the nipples of dairy animals.

As used in the present invention, the term “antifouling property against highly-adhesive substances such as stool, urine, mud, and soil” means that the nipple pack itself does not adhere or adhere to highly-adhesive substances such as stool, urine, mud, and soil. It is defined as a physical property that even if highly sticky matter such as stool, urine, mud, and soil adheres, it will be peeled off naturally over time. The term “antifouling” used in the present invention is “non-adhesiveness to highly sticky materials such as stool, urine, mud and soil” or “water and oil repellency to highly sticky materials such as stool, urine, mud and soil”, etc. It is synonymous with.
Further problems and advantages to be solved by the invention will be clarified sequentially below.

As described above, it is not possible to give dairy packs of dairy livestock a function to prevent high-adhesive substances such as stool, urine, mud, and soil from adhering, or to easily peel off even if they adhere. Needless to say, it is to impart a high level of water and oil repellency to the nipple packs of dairy animals.

By the way, conventionally, various water and oil repellent agents have been used. That is, liquid paraffin, etc. as mineral oils; stearic acid, oleic acid, etc. as fatty acids; animal oils, natural waxes, etc. as natural fats; ethylene glycol fatty acid esters, sorbitol fatty acid esters, polyoxyethylene fatty acid esters, etc. as fatty acid esters Polyoxyalkylene glycols, glycols, polyoxyethylene higher alcohol ethers, etc. as alcohols; polyoxyethylene alkylenes, amides, etc. as amides; polyoxyalkylene phosphate soda, etc. as phosphate esters; metal soaps Calcium stearate, sodium oleate, etc. are used.

In view of the cost, the present inventor first selects any of the above water / oil repellents, kneaded it into natural rubber latex, and formed it into a film having a thickness equivalent to a teat pack. And a sample. On the other hand, a natural rubber latex was formed into a film having a thickness equivalent to a nipple pack, and the surface was coated with the same water / oil repellent. Each sample was tested for antifouling effect by attaching a highly adhesive material such as feces, urine, mud, and soil, but satisfactory results could not be obtained. Next, when the same test was conducted for the water / oil repellent agent instead of the silicone-based and / or fluorine-based water / oil repellent, a satisfactory effect could be obtained.

By the way, currently, silicone / acrylic, fluorine / acrylic, or silicone / vinyl chloride latex having a water repellency with a contact angle of 90 ° or more and a solid content of 14 to 17% is commercially available. A film having a predetermined thickness was produced from these latexes and subjected to the same test. However, it was found that it took time until the film was formed, and the film was insufficient in strength and could not be put into practical use as a teat pack.
From these demonstration tests, the following facts were verified.
Lee. Mineral oils, fatty acids, natural fats and oils, fatty acid esters, alcohols, amides, acid esters, metal soaps, etc. Absent.
B. Silicone-based and / or fluorine-based water and oil repellents are effective.
C. A single product of silicone-based or fluorine-based latex currently on the market has a water / oil repellent effect, but has a drawback of insufficient strength as a teat pack or a long time until film formation.
Therefore, the above problem is solved by the invention described in any one of the following.

The first invention is a material for forming a nipple pack for dairy animals for forming a nipple pack that covers and protects the nipple of a dairy animal, comprising at least:
(A) a polymer latex composed of a polymer compound containing no fluorine atom and silicon atom in the molecule;
(B) a polymer latex composed of a polymer compound containing fluorine atoms and / or silicon atoms in the molecule, or (C) a component selected from silicon-based and / or fluorine-based water- and oil-repellent compounds. It is a material for nipple pack formation of milk farm animals characterized by including.

The second invention is. In the invention described in item 1, the polymer latex composed of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule (B) is silicone rubber, fluorine rubber, fluorosilicone rubber, silicone rubber. A thermoplastic elastomer or fluororubber thermoplastic elastomer is used as a dispersoid.

The third invention is. In the invention described in item 1, the (C) silicon and / or fluorine-based water / oil repellent compound is a silane coupling agent or a perfluoroalkyl group-containing compound.

The fourth invention is. In the invention described in any one of the above items 1 to 3, (B) a polymer latex composed of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule, or (C) a silicon-based polymer and The concentration of the fluorine-based water / oil repellent compound is 0.1 to 10% per mass of the teat pack forming material.

  The fifth invention is. In the invention described in any one of Items 1 to 4, the (C) silicon-based and / or fluorine-based water- and oil-repellent compounds are further mineral oil-based, fatty acid-based, natural oil-based, fatty acid ester. A water- and oil-repellent compound selected from the group consisting of a system, an alcohol system, an amide system, a phosphate ester system, a metal soap system, or a mixture thereof.

The sixth invention is. In the invention described in any one of the first to fifth aspects, the teat pack forming material further includes (D) a flocculant for aggregating the polymer latex.

The seventh invention is: In the invention described in item 6, (D) the flocculant is selected from the group consisting of a low molecular inorganic flocculant, a high molecular inorganic flocculant, a high molecular organic flocculant, an acid, and a mixture thereof. The

According to an eighth aspect of the present invention, there is provided a material for forming a nipple pack for milking livestock described in any one of the above items 1 to 7, wherein the polymer latex is dispersed on the entire surface of the nipple. A method for preventing mastitis, characterized by forming a teat pack comprising agglomerating fine particles and forming a film to a predetermined thickness.

A ninth invention is a kit for forming a nipple pack for dairy animals for forming a nipple pack that covers and protects the nipple of a dairy animal,
(I) a polymer latex composed of a polymer compound containing no fluorine atom and no silicon atom in the molecule (A) contained in a predetermined container;
(Ii) (B) a polymer latex comprised of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule contained in the same or different container as the predetermined container, and (iii) the above (i ) And (ii) a kit for forming a nipple pack for dairy livestock, comprising a combination with (D) a flocculant housed in a different container.

The tenth invention is. In the invention described in item 9, the flocculant (D) is selected from the group consisting of a low molecular weight inorganic flocculant, a high molecular weight inorganic flocculant, a high molecular organic flocculant, an acid, and a mixture thereof. The

The eleventh invention is a kit for forming a nipple pack for dairy animals for forming a nipple pack that covers and protects the nipple of a dairy animal,
(I) a polymer latex composed of a polymer compound containing no fluorine atom and no silicon atom in the molecule (A) contained in a predetermined container;
(Ii) (C) a silicon-based and / or fluorine-based water / oil-repellent compound stored in the same or different container as the predetermined container; and (iii) stored in a container different from the container of (i). (D) A kit for forming a nipple pack for dairy animals, comprising a combination with a flocculant.

The twelfth invention is: In the invention described in the above item 11, (D) the flocculant is selected from the group consisting of a low molecular weight inorganic flocculant, a high molecular weight inorganic flocculant, a high molecular organic flocculant, an acid, and a mixture thereof. The

The material for forming a nipple pack for dairy livestock according to the present invention is classified as follows: (A) a polymer latex composed of a polymer compound containing no fluorine atom or silicon atom in the molecule; and (B) A component containing a polymer latex composed of a polymer compound containing fluorine atoms and / or silicon atoms in the molecule; or (A) a polymer composed of a polymer compound not containing fluorine atoms and silicon atoms in the molecule. It is composed of two systems of latex and a component containing (C) a silicon-based and / or fluorine-based water / oil repellent compound. That is, in any system, it is essential to contain a fluorine atom and / or a silicon atom, thereby achieving the effects exemplified below.
1. In any system, the polymer latex is the main ingredient for forming a nipple pack, so it forms a film by rapid agglomeration by mixing with an appropriate aggregating agent, and each component is uniformly dispersed. A nipple pack can be formed.
2. (A) A polymer latex composed of a polymer compound that does not contain a fluorine atom and a silicon atom in the molecule forms a nipple pack having high strength and high elasticity. It can follow the movement of expansion and can maintain the pack without peeling even if the livestock is resting on the side.
3. Since the formed teat pack itself has a water / oil repellent function, that is, a high degree of antifouling properties, the effects exemplified below are effective.
(B) Do not allow high-adhesive substances such as feces, urine, mud, and soil remaining in the barn to adhere. Even if highly sticky substances such as stool, urine, mud, and soil adhere, they will peel off naturally over time. Therefore, the vicinity of the nipple mouth can be kept clean for a long time.
(B) Even when the nipples come into contact with each other when the livestock is resting on the side, it is possible to prevent the packs from being peeled off due to the adhesion between the packs without causing the attached packs to adhere to each other.
(C) Since the formed nipple pack itself has a water / oil repellent function, that is, a high degree of antifouling properties, the coatability is good even when the nipple is covered with oil or milk on the skin. Well, the pack can be in close contact with the nipple. Therefore, it does not peel off from the nipple for a long time.

A kit for forming a dairy livestock nipple pack for forming a nipple pack that covers and protects the nipple of a dairy livestock of the present invention,
1. (I) a polymer latex composed of a polymer compound containing no fluorine atom and no silicon atom in the molecule (A) contained in a predetermined container;
(Ii) (B) a polymer latex comprised of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule contained in the same or different container as the predetermined container, and (iii) the above (i ) And (ii) a combination with (D) a flocculant contained in a container different from the container of (ii), or (i) a fluorine atom and a silicon atom in the molecule (A) contained in a predetermined container A polymer latex composed of a polymer compound not contained;
(Ii) (C) a silicon-based and / or fluorine-based water / oil-repellent compound stored in the same or different container as the predetermined container; and (iii) stored in a container different from the container of (i). (D) in combination with a flocculant.
Therefore, the effect illustrated below is achieved.
(B) Although nerves are used to transport, store and store latex, the base and coagulant containing polymer latex are housed in separate containers, ensuring long-term storage stability. .
(B) By appropriately changing the capacity of each container, merchandising according to the scale of the dairy farmer can be performed.
(C) A container containing a base containing a polymer latex and a container containing a flocculant have functions as independent products, so they are necessary when necessary according to the demands of dairy farmers. A large amount can be provided where it is needed, leading to expanded applications.

    When a predetermined flocculant is mixed with the nipple pack-forming material of the present invention, a pack that immediately adheres to a normal nipple and an oil-coated nipple of a dairy animal is obtained by a simple method. There is no peeling. The pack is produced by agglomeration of the dispersoid particles constituting the polymer latex by attaching one of the polymer latex or the flocculant to the nipple of the dairy livestock, and then attaching the other, so it is very simple. It can be obtained by a technique. The pack is formed by immersing the nipples of dairy livestock in the nipple pack material and then forming the film in 10 minutes or less by natural drying without forced drying such as heating.

    As a result, the vicinity of the nipple mouth is completely sealed, and even if the nipple of the milking cow repeatedly contracts and expands, the pack can follow the shape change and can keep the state closely attached to the nipple. It becomes possible to surely prevent the entry of germs into the nipple mouth.

    Further, the teat pack forming material of the present invention does not require kneading operation immediately before use, and problems such as non-uniformity of teat packs due to insufficient kneading and mixing of bubbles are also eliminated.

Hereinafter, the components constituting the nipple pack forming material for milk producing livestock of the present invention will be described in detail.
[(A) Polymer latex composed of a polymer compound containing no fluorine atom or silicon atom in the molecule]
The polymer latex of the present invention is obtained by dispersing particles made of a polymer in water or an organic solvent. "Latex" is originally a name given to milky white water-based emulsions extracted from natural rubber trees. Usually speaking, latex refers to natural rubber latex (latex in the narrow sense). However, colloidal sols in which a rubber-based polymer such as synthetic rubber or synthetic resin is used as a dispersoid and various organic solvents or inorganic aqueous solutions are used as dispersion media are also called latexes (broadly defined latex). Synthetic rubber aqueous dispersions produced using the emulsion polymerization method are called synthetic rubber latex, sometimes distinguished from natural rubber latex. Emulsions of resins other than rubber are also called resin polymer latex, and rubber. Sometimes distinguishes from latex. However, in recent years, the term “polymer latex” has been used as a term encompassing all of natural rubber latex, synthetic rubber latex and resin latex. Accordingly, in the present invention, the term “polymer latex” is used in a broad sense hereinafter (see Soichi Muroi: Chemistry of Polymer Latex, Polymer Publishing Association (1976)). In the present invention, the solvent for dispersing the rubber polymer is preferably water from the viewpoint of high safety and cost reduction.

  The type of latex used for the component (A) is not particularly limited as long as it does not contain a fluorine atom and a silicon atom, but an aqueous dispersion of natural rubber, isoprene rubber and derivatives thereof is preferable in order to increase the strength of the pack. In addition, “derivatives” include those obtained by copolymerizing rubber polymers, those obtained by modifying the surface of rubber polymers with reactive functional functional groups such as carboxyl groups, etc. Point to. Among natural rubber or isoprene rubber and derivatives thereof, those obtained by partially crosslinking in advance have higher strength and are more preferable. In the aqueous dispersion, a slight amount of organic solvent is allowed, and an organic solvent of 10% by mass or less, preferably 5% by mass or less may be present. The natural rubber, isoprene rubber and derivatives thereof listed above have high elongation and high strength, so that they can sufficiently withstand the expansion and contraction of livestock nipples. The above latex may be a mixture of two or more kinds, and may be copolymerized with each other. The form of copolymerization may be any of random copolymerization, alternating copolymerization, periodic copolymerization, block copolymerization, and graft copolymerization. The structure of the polymer in the latex particles may be any of linear, branched, dendrimer, network, and cyclic. In addition, a latex particle whose surface is modified with a reactive functional group such as a carboxyl group can be used. In order to stabilize latex particles, those added with various stabilizers such as ammonia and surfactants such as glycerin fatty acid ester and lauric acid ester can also be used. If necessary, vulcanizing agents, vulcanization accelerators, vulcanization acceleration aids, vulcanization retarders, deterioration inhibitors (antioxidants, ozone inhibitors, etc.), processing aids (plasticizers, softeners) , Tackifiers, etc.), dispersants, creaming agents, foaming agents, heat-sensitive agents (zinc ammonium complex salts, polyvinyl methyl ether, etc.) and the like can also be used. The solid content concentration in the latex is preferably 20% by mass or more and 90% by mass or less, and more preferably 30% by mass or more and 85% by mass or less. When the solid content concentration is less than 20% by mass, it takes time to form the pack and the strength of the pack tends to be weakened. On the other hand, when the solid content concentration exceeds 90% by mass, the viscosity of the material becomes high and the applicability of the pack to the teat tends to be lowered.

[(B) Latex composed of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule]
(B) Latex composed of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule has water repellency and oil repellency, so it is immiscible with water and water-soluble substances. It has the property of repelling water-soluble substances. Therefore, the pack formed from the pack material containing the above components repels water and water-soluble substances. Therefore, the teat pack has the effect of preventing mud, manure, etc. from adhering. Moreover, it has the effect of improving the applicability of the teat pack material to the teats greasy with oils and milk on the skin.
The latex used for component (B) is not limited as long as it contains fluorine atoms and / or silicon atoms in the molecule. For example, vinylidene fluoride-based fluororubber, tetrafluoroethylene / propylene-based rubber, perfluorofluorine Rubber, fluorosilicone rubber, tetrafluoroethylene / perfluoroalkyl vinyl ether fluorine resin, dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, methyl fluoroalkyl silicone rubber, vinylidene fluoride fluorine rubber , Tetrafluoroethylene / propylene rubber), perfluoro fluorine rubber, fluorosilicone rubber, tetrafluoroethylene / perfluoroalkyl vinyl ether fluoro rubber, dimethyl series -Water dispersion of rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, 4-fuca ethylene-propylene rubber, 4-fuca ethylene-perfluoromethyl vinyl methyl vinyl ether rubber, thermoplastic silicone rubber, thermoplastic fluoro rubber, etc. A liquid is illustrated. However, from the viewpoint of miscibility with a latex component composed of a polymer compound that does not contain fluorine and silicon atoms in the molecule as component (A), silicone rubber such as organic polysiloxane, perfluoropropene, fluorine An aqueous dispersion of fluororubber such as vinylidene chloride copolymer or a derivative thereof is preferable.

[(C) silicon-based and / or fluorine-based water / oil repellent compound]
The type of the silicon-based water / oil repellent compound is not limited as long as it contains a silicon atom in the molecule, but methyltrimethoxysilane, methyltriethoxysilane, perfluorooctyltrimethoxysilane, perfluorooctyltriethoxysilane, vinyl Trimethoxysilane, vinyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, p-styryltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-acryloxypropyltrimethoxysilane, 3 -It is preferable to use a silane coupling agent such as mercaptopropylmethyldimethoxysilane.
Fluorine-based water- and oil-repellent compounds are commercially available in various ways depending on the application, from low molecular weight to high molecular weight. The low molecular weight water- and oil-repellent compound is a derivative of an alcohol containing a perfluoroalkyl group, and (i) a urethane compound (reaction product with an isocyanate: as an isocyanate, diphenylmethane 4,4′- Typical examples include diisocyanates and tolylene diisocyanates), (b) ester types (reaction products with phosphoric acid and pyromellitic acid), and the like. High molecular weight type water / oil repellent compounds include perfluoroalkyl group-containing acrylic acid ester, methacrylic acid ester, or perfluoroalkyl group-containing acrylic acid ester or methacrylic acid ester and other vinyl group-containing compounds. Examples thereof include a copolymer with a monomer. Product forms include a water dispersion type and a solution type, but the water dispersion type is preferred from the viewpoint of safety and the like.

It is selected from (B) a latex composed of a polymer compound containing fluorine atoms and / or silicon atoms in the nipple pack material, or (C) a silicon-based and / or fluorine-based water / oil repellent compound. The content of the component is not particularly limited, but (B) a polymer containing fluorine atoms and / or silicon atoms in order to keep the film strength of the teat pack sufficiently while giving sufficient water and oil repellency to the teat pack. When the polymer latex composed of the compound is blended, the concentration of the (B) polymer latex is preferably 0.1% by mass or more and 10% by mass or less with respect to the whole teat pack material. Similarly, when a component selected from (C) a silicon-based and / or fluorine-based water / oil repellent compound is blended, the concentration of the component (C) is 0.1 mass relative to the whole teat pack material. % To 10% by mass is preferable.
The mineral oil-based, fatty acid-based, natural oil-based, fatty acid ester-based, alcohol-based, amide-based, phosphate ester-based or metal soap-based water- and oil-repellent compounds mentioned above are silicon-based and / or fluorine-based water-repellent / Compared to oil-repellent compounds, there are difficulties in water and oil repellency. Therefore, by using together with the (C) silicon-based and / or fluorine-based water / oil repellent compound, their water / oil repellent effect can be improved. If the viewpoint is changed, the (C) silicon-based and / or fluorine-based water- and oil-repellent compounds are excellent in water- and oil-repellent effects but have a drawback of high cost. Therefore, (C) silicon-based and / or fluorine-based water / oil repellent compounds and the above-described mineral oil-based, fatty acid-based, natural oil-based, fatty acid ester-based, alcohol-based, amide-based, phosphate ester-based or metal soap-based repellency. Use in combination with a water / oil repellent compound is preferable because the cost can be reduced.

[(D) Flocculant] -General remarks The (D) flocculant in the present invention is selected from the group consisting of a low molecular inorganic flocculant, a high molecular inorganic flocculant, a high molecular organic flocculant, an acid, and a mixture thereof. Selected.
On the surface of the polymer fine particles constituting the polymer latex, for example, the hydrophilic group of the emulsifier molecule [(-SO ₃ H, -SO ₃ M, -OSO ₃ H, -OSO ₃ M, -COOH, -NR ₃ X, -COOH, -NH ₂ , -CN, -OH, -NHCONH ₂ ,-(OCH ₂ CH ₂ ) _n- , -CH ₂ OCH ₃ , -OCH ₃ , COOCH ₃ , -CS, etc. [where R is an alkyl group, M Is an alkali metal or —NH ₄ , X is a halogen)], and is negatively charged. The aggregating agent has a role of neutralizing the charge on the surface of the polymer fine particles constituting the polymer latex and aggregating the particles.
[(D) Flocculant]-Detailed discussion 1. [Low molecular inorganic flocculant (metal salt)]
One of the (D) flocculants of the present invention is a low-molecular inorganic flocculant. Examples of the low molecular weight inorganic flocculant include various metal salts. Among the flocculants, the metal salt particularly effectively causes such negatively charged latex particles to aggregate. In the present invention, a metal salt that acts as a flocculant is defined in a broad sense as a compound in which an anion derived from an acid and a cation derived from a base are ion-bonded. Reaction between acid and metal, reaction between base and acid oxide, reaction between base and nonmetal element, reaction between acid oxide and basic oxide, nonmetal element and metal It is a compound that is produced by a reaction and can be ionized in a latex dispersion medium to generate metal ions. The metal salt that acts as a flocculant in the present invention is not particularly limited as long as it has the above-mentioned action, and all known ones can be used, for example, sodium chloride, potassium chloride, calcium chloride, magnesium chloride, Iron chloride, tin chloride, aluminum chloride, titanium chloride, calcium sulfate, magnesium sulfate, zinc sulfate, aluminum sulfate, iron (II) sulfate, iron (II) sulfate, iron (III) chloride, zirconium sulfate, zinc oxide, magnesium oxide , Aluminum oxide, iron oxide, titanium oxide, zirconium oxide, tin oxide, aluminum hydroxide, iron hydroxide, zirconium hydroxide, tin hydroxide, calcium acetate, zinc acetate, calcium lactate, zinc lactate, potassium fluorotitanate, Iron-containing aluminum sulfate, ammonium alum, potassium alum, Examples include iron chloride-iron sulfate mixtures. These may be a mixture of two or more.
The ease of aggregation of polymer particles from a polymer latex due to the salting-out effect of a metal salt is generally such that the larger the valence of an ion having a charge opposite to the charge of the particle as a dispersoid, the more noticeable the particle charge becomes. Since it is neutralized, the polymer latex tends to aggregate. For example, the cohesion order of polymer latex in the case of monovalent cations is Li>Na>K>Rb> Cs, and the cohesion order in the case of divalent cations is Mg>Ca>Sr> Ba. It is. Of course, in view of toxicity to living milk-producing livestock and workers, reactivity with water, and the like, magnesium salts that dissociate Mg ²⁺ ions or calcium salts that dissociate Ca ²⁺ ions are preferable.

2. [Polymer inorganic coagulant]
Polymer inorganic flocculants include polyaluminum chloride ([Al ₂ (OH) _n Cl _6-n ] _m ),
Aluminum polysulfate ([Al ₂ (OH) _n (SO ₄ ) _{3-n / 2} ] _m ),
Poly iron chloride (III) ([Fe ₂ (OH) _n Cl _6-n ] _m ), poly iron sulfate (III) ([Fe ₂ (OH) _n (SO ₄ ) _{3-n / 2} ] _m ), etc. Illustrated.

3. [High molecular organic coagulant]
Examples of the high molecular organic flocculant used as the flocculant in the present invention include polyacrylamide, polyethylene oxide, urea-formalin resin and the like as [nonionic], and sodium acrylate (anionic) as (anionic). Acrylamide-sodium acrylate copolymer), polyacrylamide partial hydrolyzate, sulfomethylated polyacrylamide, polyaminoalkyl (meth) acrylate, halogenated polyvinylpyridium, halogenated polydiallylammonium fat, etc. Examples include polyaminomethyl acrylamide, polyvinyl imidazoline, chitosan, and epoxyamine. These have a molecular weight of tens of thousands to millions, and the charge increases as the molecular weight increases.

4). [acid]
The acid as a coagulant for aggregating the polymer fine particles constituting the polymer latex is not particularly limited, but citric acid, lactic acid, acetic acid, malic acid, fumaric acid, maleic acid, tartaric acid, gluconic acid, succinic acid And propionic acid, butyric acid, sulfuric acid and the like. These acids may be salts with metals. Ranking of ability ions these acids dissociate to aggregating the latex polymer, so-called cohesion rank, citrate>tartrate>sulfate> acetate _{^{ion> Cl - Br-> NO 3- -}} > ClO 3 - > I ^-, and the like ^-> SCN. In selecting an acid or a salt thereof as an aggregating agent for aggregating the polymer latex in the present invention, with reference to the aggregating power ranking, safety to living organisms such as dairy livestock and workers, ease of use, etc. It should be done with consideration. Each of these acids or salts thereof may be used alone or as a mixture of two or more thereof, or may be used in combination with one or more of the above-mentioned flocculants.

[Storage format]
(D) When a flocculant is used, at least (A) a polymer latex component composed of a polymer compound containing no fluorine atom and silicon atom in the molecule, (B) a fluorine atom and / or silicon atom in the molecule The nipple is immersed in a mixture containing a polymer latex component composed of a polymer compound containing or (C) a silicon-based and / or fluorine-based water / oil repellent compound, and (D) a flocculant. In order to allow a sufficient operating time, (i) at least (A) a polymer latex composed of a polymer compound containing no fluorine atom and no silicon atom in the molecule Component, (B) polymer latex component composed of a polymer compound containing fluorine atoms and / or silicon atoms in the molecule, or (C) silicon-based and / or fluorine A form in which a base containing a component selected from water-based and oil-repellent compounds and (ii) (D) aggregating agent are separately stored is preferable.

[Water and / or water-soluble solvent]
In the present invention, as the aggregating agent for aggregating the polymer fine particles as the dispersoid constituting the polymer latex, (D) a low molecular inorganic aggregating agent, a polymer inorganic aggregating agent, a polymer organic aggregating agent, an acid, and A flocculant selected from the group consisting of those mixtures is used. When a commercially available polymer latex is used as a base, (D) the flocculant may not be completely dissolved by the amount of water blended as a dispersion medium. In particular, when a metal salt, a polymer inorganic flocculant, a polymer organic flocculant, or a solid acid is used as the flocculant, this tendency occurs. In that case, it is preferable to add water and / or a water-soluble solvent to the flocculant side. The type of water-soluble solvent is not particularly limited as long as (D) the flocculant is completely dissolved and is not extremely harmful to the human body or dairy livestock, and all known ones can be used. Among these, ethanol, propanol, butanol, acetone, methyl ethyl ketone, methanol, isopropyl alcohol and the like are preferable. The blending amount of water and / or water-soluble solvent is not particularly limited, but the addition amount of water and / or water-soluble solvent is preferably 150 parts by mass or more and 4000 parts by mass or less with respect to 100 parts by mass of (D) flocculant. 200 parts by mass or more and 3000 parts by mass or less are more preferable. When the addition amount of water and / or a water-soluble solvent exceeds 4000 parts by mass with respect to 100 parts by mass of (D) the aggregating agent, aggregation of latex may not occur instantaneously. On the other hand, when the blending amount of water and / or water-soluble solvent is less than 150 parts by mass with respect to (B) 100 parts by mass of the flocculant, (D) the flocculant is sufficiently water and / or water-soluble. It may not dissolve in the solvent. Heretofore, the blending of water and / or a water-soluble solvent has been described from the function of completely dissolving (D) the flocculant. However, the addition of a polar solvent may function as an aggregating agent that aggregates polymer fine particles as a dispersoid constituting the polymer latex. Looking at this function, when the charge of the polymer fine particles is anionic, adding a water-soluble solvent in the range of about 0.5 to 40% based on the mass of the latex causes the polymer fine particles to aggregate from the latex, (B) A synergistic effect with the flocculant can be expected.

[Additives-General]
In addition to the components as the main components described above, various additives can be blended in the material for forming a nipple pack for milk-producing livestock of the present invention as required. Examples of additives include disinfectants, fillers, thickeners, colorants, fragrances, preservatives, plasticizers, stabilizers, cross-linking agents (vulcanizing agents and vulcanization accelerators), rubber, and the like. Various additives (materials) commonly used in the processing of plastics or rubbers such as petroleum softeners can be appropriately selected and blended. The following is a discussion of the main additives.

[Additives-details]
[Disinfectant]
In order to give the pack material a sterilizing and disinfecting effect and to suppress an increase in the number of bacteria near the mouth of the nipple, a disinfecting and disinfecting agent may be used. The bactericidal disinfectant is not particularly limited as long as it can kill a wide variety of harmful microorganisms such as various bacteria, fungi, viruses causing diseases such as mastitis. For example, iodine compound, silver, copper, Metals and metal salts such as zinc, titanium and iron, tea leaf powder, hinoki powder, chitosan, benzalkonium chloride, benzethonium chloride, caprylic acid monoglyceride and other fatty acid esters and triclosan, isopropylmethylphenol, cetylpyridinium chloride, resorcin, trichlorocarba Examples include nido, halocarban, chlorhexidine, chlorhexidine hydrochloride, chlorhexidine gluconate, acrinol, sodium hypochlorite, hydrogen peroxide, and the like. A disinfectant may be added to the base and / or flocculant.

  Among these, iodine compounds and silver are preferable from the viewpoint of skin irritation to humans or milk-producing livestock, sustainability of sterilizing and disinfecting effects, and cost. Examples of the iodine compound include iodine, popidone iodine, sodium iodate, potassium iodate, sodium iodide, potassium iodide, and iodoform.

  Although the compounding quantity of a disinfection disinfectant is not restrict | limited in particular, It is preferable to be contained in 0.1-10 mass% normally in a base or a flocculant.

[filler]
A filler may be used to adjust the physical properties of the pack, mainly the reinforcing effect and the thickening effect. The filler may be added to the base and / or the aggregate liquid. As the filler, it is preferable to use metal or metalloid oxides such as silica and alumina, inorganic fluorine compounds such as potassium titanium fluoride and potassium silicofluoride, and particles of silicone resin. Although the compounding quantity of a filler is not restrict | limited in particular, It is preferable that it is contained in 0.5-30 mass% normally in a base or a flocculent.

[Thickener]
In addition, a thickener may be used to adjust the viscosity of the base and / or flocculant (liquid) and improve the yield of the base and / or flocculant (liquid) on the nipple. The thickener may be used in combination with any of the following inorganic thickeners or synthetic petroleum-based thickeners.

  Inorganic thickeners are generally compounds such as colloidal magnesium aluminum silicate, colloidal clay, which have been fume treated or precipitated into particles having a large surface-size ratio.

  Thickeners for polymer latex are usually polyvinyl alcohol, vinyl pyrrolidone, vinyl methyl ether, polyacrylic acid, polymethacrylic acid, polyacrylamide, polyethylene oxide, methylcellulose, hydroxyethylcellulose, casein, or ethyleneimine. Examples of such water-soluble polymers are exemplified.

[Colorant]
A colorant may be used to color the pack and increase the visibility of the pack. The type of the colorant is not particularly limited, and preferred examples of the white pigment include titanium oxide, zinc oxide, barium sulfate, and calcium carbonate. In addition, when a colorant having a complementary color relationship with the color of the nipple is used, it is easy to visually recognize when a crack occurs in the pack. Examples of such colorants include black pigments such as carbon black and aniline black, yellow dyed pigments, iron oxide yellow, red dyed pigments such as petals and alizarin red. When a colorant is used, depending on the amount (%) of the colorant added, a shrinkage difference (shrinkage ratio = shrinkage in the flow direction / shrinkage in the right direction) occurs depending on the direction in which the molecules are oriented. Therefore, it is necessary to determine the addition amount (%) of the colorant while paying attention to this point. From this viewpoint, titanium oxide (white pigment), cadmium yellow (yellow), carbon black (black pigment), etc., shrinkage ratio = shrinkage ratio in the flow direction / shrinkage ratio in the right-angle direction hardly changes from the case of no addition. preferable. From the viewpoint of the shrinkage ratio, the addition amount of the colorant is preferably about 0.5% by mass or less.

[Nipple pack forming kit for dairy animals]
Using the material for forming nipple packs for dairy livestock of the present invention, a nipple pack is formed on nipples of dairy livestock easily and quickly at the required place regardless of whether it is a barn or ranch. The pill pack forming material and the flocculant that forms a film by aggregating the polymer latex, which is the main essential ingredient of the nipple pack forming material, must be separated and stored together continuously. is necessary. For this purpose, a kit for forming a nipple pack for milk-producing livestock can be manufactured according to the following embodiment.
1. (A) A polymer latex composed of a polymer compound not containing fluorine atoms and silicon atoms in the molecule is stored in the container (1), and (B) the molecule contains fluorine atoms and / or silicon atoms. The polymer latex composed of the polymer compound is stored in the container (1) or another container (2), while (D) the flocculant is different from the containers (1) and (2). Store in container (3). That is, the kit is composed of two containers (1 + 3) or three containers (1 + 2 + 3).
2. (A) A polymer latex composed of a polymer compound not containing fluorine atoms and silicon atoms in the molecule is stored in the container (1), and (C) silicon-based and / or fluorine-based water and oil repellency. The compound is stored in the container (1) or another container (2), while (D) the flocculant is stored in a container (3) separate from the containers (1) and (2). . That is, the kit is composed of two containers (1 + 3) or three containers (1 + 2 + 3).
3. (A) A polymer latex composed of a polymer compound not containing fluorine atoms and silicon atoms in the molecule is stored in the container (1), and (B) the molecule contains fluorine atoms and / or silicon atoms. A polymer latex composed of a polymer compound is stored in a container (2), and (C) a silicon-based and / or fluorine-based water / oil repellent compound is stored in a container (3), and (D ) Store the flocculant in container (4), ie each in a separate container. That is, the kit is composed of four containers (1 + 2 + 3 + 4).
By using such a kit, the following effects are achieved.
(B) Although nerves are used to transport, store and store latex, the base and coagulant containing polymer latex are housed in separate containers, ensuring long-term storage stability. .
(B) By appropriately changing the capacity of each container, merchandising according to the scale of the dairy farmer can be performed.
(C) A container containing a base containing a polymer latex and a container containing a flocculant have functions as independent products, so they are necessary when necessary according to the demands of dairy farmers. A large amount can be provided where it is needed, leading to expanded applications.
(D) A kit can be selected according to various conditions such as the size of a user, for example, a dairy farmer, the number of breeding heads, the ability of staff, and the maintenance and management ability of polymer latex.

 The kit for forming a nipple pack for dairy livestock of the present invention first adds water and / or a water-soluble solvent to a predetermined container, and then adds (D) a flocculant and dissolves it to obtain a uniform flocculant solution. It is preferable that By using a uniform flocculant solution, the uniformity of the pack composition is improved and the adhesion can be further improved. The blending amount of water and / or water-soluble solvent is not particularly limited, but the blending amount of water and / or water-soluble solvent is preferably 150 parts by mass or more and 4000 parts by mass or less with respect to 100 parts by mass of (D) flocculant. 200 parts by mass or more and 3000 parts by mass or less are more preferable. When the blending amount of water and / or a water-soluble solvent exceeds 4000 parts by mass with respect to 100 parts by mass of the (D) flocculant, aggregation of the polymer latex may not occur instantaneously. On the other hand, when the blending amount of water and / or a water-soluble solvent is less than 150 parts by mass with respect to (D) 100 parts by mass of the flocculant, (D) a low molecular inorganic flocculant or a polymer inorganic The flocculant and the polymer organic flocculant may not be sufficiently dissolved in water and / or a water-soluble solvent.

[Preparation method and usage method]
1. [Method for Preparing (A) Base and (D) Flocculant-1]
The method for preparing the flocculant liquid when the base mainly containing (A) the polymer latex and (D) the flocculant is dissolved in water and / or a water-soluble solvent is not particularly limited, It can prepare using a well-known stirring mixer. Here, as the stirring mixer, for example, a rotating container type mixing kneader such as a ball mill, a ribbon mixer, a kneader, an internal mixer, a screw kneader, a Henschel mixer, a universal mixer, a Ladige mixer, a butterfly mixer, etc. A fixed container type kneader having a horizontal axis or a vertical axis can be used. Regarding the preparation of the flocculant liquid (D) When the flocculant is relatively soluble in water and / or a water-soluble solvent, strong shear is applied to the component to be dissolved and the solution in which this component is dissolved. It is also possible to use a stirrer in which no force is applied. As such a stirrer, a portable stirrer, a solid stirrer, a side stirrer, a pipe stirrer and the like equipped with various stirring blades can be used. Furthermore, regarding the preparation of the above-mentioned base and aggregating liquid (agent), two or more kinds of the above-mentioned various mixing stirrers can be used in combination.

2. [Pack formation method]
The teat pack for milking livestock according to the present invention comprises (A) a polymer latex composed of a polymer compound containing no fluorine atom and silicon atom in the molecule, and (B) a fluorine atom and / or silicon atom in the molecule. It is formed by adhering a teat to a polymer latex composed of a polymer compound that contains it, or a pack material containing a component selected from (C) a silicon-based and / or fluorine-based water- and oil-repellent compound. When the nipple pack material for dairy livestock of the present invention is attached to the nipple, from the viewpoint of effectively preventing mastitis, an area of 10% or more of the entire nipple including the milk duct portion of the nipple, preferably 20% It is good to make it adhere above. After the nipple pack material is attached to the nipple, the polymer fine particles, which are the dispersoid of the polymer latex, aggregate due to the evaporation of the solution and the action of the aggregating agent, and a film is formed on the surface of the nipple. ) The thickness of the film formed on the nipple surface by the nipple pack material is not particularly limited, but is usually about 10 μm to 2000 μm, preferably 50 μm to 200 μm. The film formed in this way can effectively prevent mastitis. If the base material and the flocculant are stored separately, after one is attached to the nipple, the other is attached to the nipple to form a pack, but after the base material is attached to the nipple It is preferable to immediately attach the flocculant to the nipple.

  Examples of the method (attachment method) for coating the nipple with the base and the flocculant include a dipping method, a brushing method, and a spraying method, but are not particularly limited. The dipping method is preferred.

The viscosities of the base and the flocculant when using the dipping method may be appropriately selected so that the nipple is easily immersed in each solution.

  The viscosity of the base and the flocculant when using the dipping method is a value measured with a cone plate viscometer at 23 ° C. and is preferably in the range of 1 to 300 dPa · s.

  The viscosity of the base and the flocculant when using the spray method is preferably in the range of 1 to 100 dPa · s in view of ease of spraying.

  When using the dipping method, for example, put nipple pack materials (base and flocculant, if stored separately into base and flocculant) in a cylindrical or cup-shaped container that can accommodate the nipples of dairy animals. . Subsequently, the container is moved in the direction of the base of the nipple (pickup), and after the nipple is immersed in the solution in the container, the container is moved in the direction of the tip of the nipple (lowered) (divided into a base and a flocculant). For storage, the base and flocculant are each operated). Immersion is 100% nipple length, and on a length basis, 10% or more, preferably 20% or more of the nipple pack material (when storing separately for base and flocculant, base and flocculant respectively) ). The dipping time of the nipple is preferably 2 seconds or longer so that the base and the flocculant are sufficiently adhered to the nipple.

  As long as the container is clean, its material is not limited, and any of metal, ceramic, plastic, paper, etc. can be used. Moreover, the container should just have the minimum internal volume required in order to make a base or a flocculant adhere to a teat in order to reduce the waste of a base and a flocculent. In the case of a cylindrical or cup-shaped container, one having an inner diameter of about 4 cm to about 8 cm and a height of about 2 cm to about 10 cm can be used. It is convenient to provide a mark on the inside of the container so that an appropriate amount of base or flocculant can be placed.

  In order to uniformly adhere the base and the flocculant to the nipple, the speed at which the container is moved toward the tip of the nipple after soaking (pull-down speed) is preferably 10 to 100 mm / second, and preferably 20 to 50 mm / second. Is more preferable.

  The speed at which the container is moved toward the tip of the teat after soaking (the pulling-down speed) is 10 so that the pack material (the base and the flocculant when the base material and the flocculant are stored separately) is uniformly attached to the teat. ˜100 mm / sec is preferable, and 20 to 50 mm / sec is more preferable.

If the base and flocculant are stored separately, the two materials should not be spaced apart so that the base or flocculant is well attached to the nipple and the other is attached to the nipple to form a pack. It is preferable to adhere to the nipple.
When the base and the flocculant are stored separately, the ratio of the base and the flocculant adhering to the teat (base / flocculant [parts by mass / part by mass]) is not particularly limited. Usually, it is preferably within the range of 0.5-2.

3. [Livestock nipple pack]
The pack for dairy livestock according to the present invention is formed on the teat of a dairy livestock as described in (2) above. The dairy livestock pack can be used to protect the nipples of dairy livestock. Specifically, it can be used for protection from infectious mastitis, protection from environmental mastitis, protection from dirt and other external environmental factors. In the present invention, the dairy livestock is particularly a livestock for milking, such as dairy cows, goats, and other livestock for which milking is performed.

Hereinafter, Examples 1 to 25 and Comparative Examples 1 to 7 for verifying the effects and the like of the examples will be described in detail to explain the method for protecting livestock nipples according to the present invention. Is not limited to these examples.
In Examples 1 to 25 and Comparative Examples 1 to 7, the abbreviations of the raw materials used for producing the teat pack and “adhesion”, “durability”, “abrasion resistance”, “pack dirt degree”, “ Evaluation methods of “the number of bacteria” and “ease of removing the pack” are as follows.

[Raw material-1]
[(A) Latex composed of a polymer compound containing no fluorine atom or silicon atom in the molecule] (indicated in the table as “latex component”).
General names (English abbreviations) and examples of latex components composed of polymer compounds that do not contain fluorine and silicon atoms in the molecule are as follows. The dispersion medium is water.
ΔNatural rubber latex (NR): ULACOL, manufactured by Resitex Co., Ltd., solid content concentration 62%, viscosity 50 mPa · s, minimum film forming temperature 10 ° C.
ΔIsoprene rubber latex (IR): Nipol ME manufactured by Zeon Corporation, solid content concentration 50%, viscosity 50 mPa · s, minimum film forming temperature 10 ° C.
ΔButyl rubber latex (BUR), manufactured by JSR Corporation, JSR BUTYL065, solid content concentration 50%, viscosity 32 mPa · s, minimum film forming temperature 10 ° C.
ΔButadiene rubber latex (BR), manufactured by JSR Corporation, JSR BR01, solid content concentration 50%, viscosity 45 mPa · s, minimum film forming temperature 10 ° C.
ΔStyrene butadiene latex (SB), manufactured by JSR Corporation, JSR SL552, solid content concentration 50%, polymerization ratio of styrene and butadiene 1: 4, viscosity 55 mPa · s, minimum film forming temperature 5 ° C.
△ Urethane rubber latex (UR), manufactured by Daiichi Kogyo Seiyaku Co., Ltd., Superflex 460, solid content concentration 40%, viscosity 50 mPa · s, minimum film forming temperature 5 ° C
ΔNitrile rubber latex (NIR), manufactured by JSR Corporation, JSR N222SH, solid concentration 50%, viscosity 85 mPa · s, minimum film forming temperature 5 ° C.
ΔNitrile butadiene latex (NBR), manufactured by Nippon Zeon Co., Ltd., Nipol 1561, solid content concentration 40%, viscosity 25 mPa · s, minimum film forming temperature 5 ° C.
△ Chloroprene rubber latex (CR), CR-6500 manufactured by Residex Co., Ltd., solid content concentration 50%, viscosity 100 mPa · s, minimum film-forming temperature 10 ° C
ΔAcrylic rubber latex (ACR): 2580 manufactured by Nissin Chemical Industry Co., Ltd., solid content concentration 45%, viscosity 50 mPa · s, minimum film forming temperature 10 ° C.
ΔVinyl acetate rubber latex (VA): A23J1-F2 manufactured by Nissin Chemical Industry Co., Ltd., solid content concentration 45%, viscosity 2000 mPa · s, minimum film forming temperature 15 ° C.
ΔEthylene vinyl acetate rubber latex (EVA): manufactured by Nissin Chemical Industry Co., Ltd. 4018, solid content concentration 61%, polymerization ratio of ethylene and vinyl acetate 1: 1, viscosity 300 mPa · s, minimum film forming temperature 10 ° C.

[Raw material-2]
[(B) Latex composed of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule] (denoted as “silicon / fluorine compound” in the table).
Common names (English abbreviations) and their properties are shown below. The dispersion medium is water.
ΔSilicone rubber latex (SIR): KM-860A manufactured by Shin-Etsu Chemical Co., Ltd., solid content concentration 60%, viscosity 350 mPa · s, minimum film forming temperature −15 ° C.
ΔFluorine rubber latex (FR): E-3705S21R manufactured by Daikin Industries, Ltd., solid content concentration 50%, viscosity 300 mPa · s, minimum film forming temperature 10 ° C.

[Raw material-3]
[(C) silicon / fluorine-based water / oil repellent compound] (In the table, it is expressed as “silicon / fluorine compound”)
ΔMethyltriethoxysilane (MTES): Wako Pure Chemical Industries, Ltd. ΔPerfluorooctyltriethoxysilane (PFES): Wako Pure Chemical Industries, Ltd.

[Raw material-4]
General name and abbreviation of [(D) flocculant] Δ polyvalent metal compound (indicated in the table as “MX”): calcium chloride: CC, manufactured by Wako Pure Chemical Industries, Ltd. Δ organic acid: lactic acid: LA Wako Pure Chemical Made by Kogyo Co., Ltd.

[Other ingredients]
[solvent]
△ Water: WA
Δ Ethanol: ET Wako Pure Chemical Industries, Ltd. Δ Potassium alginate (Alg-K) [20 ° C., 1% aqueous solution; viscosity = 300 mPa · sec] Kimika Co., Ltd. Δ Sodium alginate (Alg-Na) [20 ° C., 1 % Aqueous solution; viscosity = 300 mPa · sec] manufactured by Kimika Co., Ltd. △ calcium sulfate: calcium sulfate dihydrate Wako Pure Chemical Industries, Ltd. △ organic solvent solution of polymer compound for preparation of nipple pack material: Table 4
a: 12 parts by mass of solute polyurethane rubber dissolved in 88 parts by mass of solvent tetrahydrofuran.
b: 12 parts by mass of solute vinyl acetate dissolved in 88 parts by mass of solvent xylene.
c: 9 parts by mass of solute butyl rubber dissolved in 91 parts by mass of solvent toluene.
d: 9 parts by mass of solute butadiene rubber dissolved in 91 parts by mass of solvent toluene.

[Evaluation method]
1. [Adhesion evaluation method]
A dental silicone impression material (“Sofuri Liner Tough Super Soft” (trade name) manufactured by Tokuyama Dental Co., Ltd. (trade name), but “Sofuri” in a hollow mold with a nipple shape (inner diameter 3 cmφ, length 4 cm) Liner Tough ”is a registered trademark of Tokuyama Co., Ltd.)], and after the impression material has hardened, it was removed from the mold to produce a pseudo teat.
In Examples 1 to 19, the base material was filled in a cup (cylindrical container having an inner diameter of 6 cmφ and a length of 4 cm). Next, the upper end of the pseudo nipple was held, and the length of the pseudo nipple tip of 20% was inserted into the base material filled in the cup, and immediately pulled out to attach the base material to the tip of the pseudo nipple. Then, after naturally drying for a while (about 10 minutes), a pack was formed around the pseudo nipple.
In Examples 20 to 25, the base material and the flocculant were filled in a cup (a cylindrical container having an inner diameter of 6 cmφ and a length of 4 cm). Next, the upper end of the pseudo nipple was held, and the length of the pseudo nipple tip of 20% was inserted into the base material filled in the cup, and immediately pulled out to attach the base material to the tip of the pseudo nipple. Subsequently, a pack was formed by inserting 50% of the tip of the pseudo nipple into the coagulated liquid filled in the cup and immediately pulling it out.
In Comparative Example 1, the base material was filled in a cup (cylindrical container having an inner diameter of 6 cmφ and a length of 4 cm). Next, the upper end of the pseudo nipple was held, and the length of the pseudo nipple tip of 20% was inserted into the base material filled in the cup, and immediately pulled out to attach the base material to the tip of the pseudo nipple. After that, by naturally drying for a while (about 10 minutes), a pack was formed around the pseudo nipple.
In Comparative Examples 2 to 5, 40 g of each organic solvent solution a to d of the polymer compound for nipple pack material preparation was filled in a cup (cylindrical container having an inner diameter of 6 cmφ and a length of 4 cm). Next, hold the upper end of the pseudo nipple, insert 20% length of the tip of the pseudo nipple into the solution filled in the cup, immediately pull it out, apply the solution to the tip of the pseudo nipple, leave it to dry, and dry it around the pseudo nipple. A pack was formed.
In Comparative Example 6 and Comparative Example 7, weighed into a kneading cup so that the weight ratio of the powder component to the liquid component was 1:15, and kneaded until a uniform paste was obtained using a kneading spatula, The resulting paste was filled into a cup. Next, from the state of holding the upper end of the pseudo nipple and touching the paste filled in the cup, slowly apply force, insert until all the nipple is hidden, immediately pull out and leave for about 10 minutes to cure the paste. It was.
The pack formed by the above-described method (pack generated at the tip of the pseudo nipple) is left under the conditions of 23 ° C. and 50% relative humidity with the nipple side of the pseudo nipple hanging downward, and over time. The state of the nipple pack was visually observed and evaluated according to the following evaluation criteria.
○: The nipple pack is completely in close contact with the pseudo-nipple, and no gap is observed between the nipple pack and the pseudo-nipple.
(Triangle | delta): Although the clearance gap is recognized in the peripheral part of a nipple pack, the pseudo-nipple mouth vicinity is closely_contact | adhered (the nipple pack has moved below).
X: The state where the teat pack has fallen off from the pseudo teat.

2. [Durability evaluation method]
A dental silicone impression material [“Sofuri Liner Tough Super Soft” (trade name) manufactured by Tokuyama Dental Co., Ltd. "Is a registered trademark of Tokuyama Co., Ltd.)], and after the impression material was cured, it was removed from the mold to produce a pseudo-nipple.
The pack was left for 1 hour, 1 day, 2 days, 3 days, and 4 days in an environment of a temperature of 23 ° C. and a relative humidity of 50% RH. The durability test shown below was implemented with respect to each pack. Assuming an actual pack use site, that is, a pasture field, the surface on which the pack collides was soil in the durability test.
The load was applied to a fatigue tester (Instron, E3000) so that a load was applied from the central axis direction of the pseudo nipple, and a load of 1 to 5 kgf / cm ² was applied. Incidentally, the 3 kgf / cm ² and the median value of the load, with amplitude and 2 kgf / cm ^2. The frequency was 1 Hz and the cycle number was 100.
After carrying out the durability test, the state of the pack was visually observed, and “durability” was evaluated based on the following evaluation criteria. In addition, when it became evaluation of x by 3 days later, the test after that was not implemented. The table shows-(no evaluation).
Durability evaluation criteria:
○: No damage or lifting of the pack is observed.
Δ: The pack is partially broken, but the vicinity of the nipple mouth is covered.
X: The whole is broken or peeled off.

3. [Abrasion resistance evaluation method]
A dental silicone impression material [Sofuri Liner Tough Super Soft (trade name) manufactured by Tokuyama Dental Co., Ltd.] (trade name) provided in the shape of a dairy cow's teat (inner diameter 3 cmφ, length 4 cm) "Is a registered trademark of Tokuyama Co., Ltd.)], and after the impression material was cured, it was removed from the mold to produce a pseudo-nipple.
As in the case of evaluation of “adhesion”, a pack was formed around the pseudo nipple. Subsequently, the pack was left for 1 hour, 1 day, 2 days, 3 days, and 4 days in an environment of a temperature of 23 ° C. and a relative humidity of 50% RH. The wear test shown below was carried out on each of the packs.
Fix the pseudo nipple so that it does not move with a jig with the nipple mouth up, place it on the scale, and make 50 strokes horizontally around the nipple mouth with a brush (hair length: 25 mm, hair material: nylon) Rubbed. At that time, the amplitude was about 5 cm and the load was about 1 kgf. After carrying out the wear test, the state of the pack was visually observed, and “wear resistance” was evaluated based on the following evaluation criteria. In addition, when it became evaluation of x by 3 days later, the test after that was not implemented. The table shows-(no evaluation).
Abrasion resistance Evaluation criteria ○: No exposure near the mouth of the nipple is observed.
Δ: A part of the nipple mouth is exposed.
X: The nipple mouth is completely exposed.

4). [Evaluation method of pack dirt level]
The degree of dirt on the pack after the durability test in (2) was evaluated visually based on the following evaluation criteria.
Pack dirt degree Evaluation criteria ○: There is almost no dirt.
Δ: Some dirt is seen.
X: It is very dirty and the part that was in contact with the soil is brown.

5. [Bacteria count evaluation method]
In the evaluation of (2) “durability”, the pack after the endurance test was carried out 4 days after the installation of the pack was carefully peeled off so as not to get dirt inside. About 1 cm ² that touches the nipple mouth where the pack was attached was wiped off with a cotton swab ([Pro · media ST-25], manufactured by Elmex; registered trademark of the fungus test kit), and the swab was immersed in 10 mL of physiological saline. I let you. 1 mL of the solution was dropped into a medium (aerobic gold medium, 6400AC, 3M) and cultured at 37 ° C. for 48 hours. Assuming that one bacterium forms one colony, the number of bacteria was calculated from the number of colonies (colony number × 10 = bacterial number). The obtained number of bacteria was evaluated according to the following criteria. Generally, if it is less than 1000 pieces / cm ² , it can be judged that it is kept clean.
The number of external bacteria (the number of bacteria in the soil) is approximately 10,000 / cm ² or more, although there are variations.
○: Less than 1000 cells / cm ² : The number of bacteria is small and the inside of the pack is kept clean.
Δ: 1000 / cm ² or more and less than 10,000 / cm ² : The number of bacteria is slightly larger, but less than the number of external bacteria.
X: 10,000 / cm ² or more: The number of bacteria is large, and the effect of reducing the number of bacteria by the pack cannot be confirmed.

6). [Evaluation method for ease of unpacking]
A pack was formed in the same manner as in the above (1), and left for 1 day under conditions of 23 ° C. and 50% relative humidity with the nipple side of the pseudo nipple hung downward. When the entire pseudo-nipple was strongly wiped with a cotton cloth (20 cm square), it was evaluated whether the pack could be removed cleanly.
○: The pack can be removed cleanly at one time.
Δ: The pack cannot be peeled off once, but can be removed by wiping 2-3 times.
X: The pack cannot be removed even after wiping 2 to 3 times.

[Example 1]
The substrate was weighed into a 40 g container. Using the base material, a pack was formed and evaluated for "adhesion", "durability", "abrasion resistance", "pack dirt level", "bacteria count", and "easy to remove pack". .

[Examples 2 to 19]
A pack was formed in the same manner as in Example 1 except that the composition of the substrate was as shown in Tables 1 and 2, and “adhesion”, “durability”, “abrasion resistance”, “pack contamination degree” ”,“ Bacterial count ”, and“ Ease of unpacking ”.

[Example 20]
The substrate was weighed into a 40 g container. 40 g of the flocculant was weighed into a container. Using a base material and a flocculant, a pack is formed and evaluated for "adhesion", "durability", "abrasion resistance", "pack dirt level", "bacteria count", and "easy to remove pack" went.

[Example 21]
A pack was formed in the same manner as in Example 20 except that the composition of the base material and the flocculant was as shown in Table 2, and “adhesion”, “durability”, “abrasion resistance”, “pack contamination degree” ”,“ Bacterial count ”, and“ Ease of unpacking ”.

[Example 22]
The substrate was weighed into a 40 g container. 100 g of lactic acid was added to 500 g of water and stirred with a stirring blade for 30 minutes to obtain a uniform flocculant. Among them, 40 g of the flocculant was weighed into a container. Using a base material and a flocculant, a pack is formed and evaluated for "adhesion", "durability", "abrasion resistance", "pack dirt level", "bacteria count", and "easy to remove pack" went.

[Examples 23 to 25]
A pack was formed in the same manner as in Example 22 except that the composition of the base material and the flocculant was as shown in Table 2, and “adhesion”, “durability”, “abrasion resistance”, “pack dirt degree” ”,“ Bacterial count ”, and“ Ease of unpacking ”.

[Comparative Example 1]
As shown in Table 3, natural rubber latex was weighed into a 40 g container and used as a base material. This is an example in which silicone rubber latex (SIR) is removed from the composition of Example 1, that is, only natural rubber latex (NR) is used. A pack was formed using this base material, and "adhesion", "durability", "abrasion resistance", "pack dirt degree", "bacteria count", and "ease of removing pack" were evaluated. .

[Comparative Examples 2 to 5]
As shown in Table 4, the organic solvent solution of the polymer compound for preparing the nipple pack material was used as a substrate as it was. A pack was formed using the base material, and “adhesion”, “durability”, “abrasion resistance”, “pack dirt degree”, “bacteria count”, and “easy to remove pack” were evaluated.

[Comparative Example 6]
As shown in Table 5, 20.0 g of sodium alginate and 20.0 g of calcium sulfate were respectively added to a small mixer (food mixer manufactured by Iwatani Corporation) and stirred for 5 minutes to obtain a uniform powder component. Moreover, 600 g of distilled water was prepared as a liquid component. Form a pack using powder and liquid components and evaluate "adhesion", "durability", "abrasion resistance", "pack dirt level", "bacteria count", and "easy to remove pack" went.

[Comparative Example 7]
A pack was formed in the same manner as in Comparative Example 6 except that the composition of the powder component was as shown in Table 5, and “adhesion”, “durability”, “abrasion resistance”, “pack dirt degree”, “ Evaluation of “bacterial count” and “easy to remove pack” was performed.

The compositions of the domestic nipple pack materials of Examples 1 to 25 and Comparative Examples 1 to 7 are shown in Tables 1 to 5. Further, in Examples 1 to 25 and Comparative Examples 1 to 7, “adhesion”, “durability”, “abrasion resistance”, “pack dirt degree”, “bacteria count”, and “easy to remove pack” The evaluation results are shown in Tables 6-8.

[Discussion]
Examples 1 to 25 are materials for forming nipple packs for dairy animals and livestock adjusted so as to satisfy all the requirements of the present invention. As shown in Tables 6 and 7, in any case, a film having high adhesion, durability, and abrasion resistance was obtained. The pack was hardly contaminated by the durability test, and it was possible to maintain a clean state. The bacteria count was small enough and the pack was easy to remove. Further, in Examples 20 to 25 using the flocculant, durability and wear resistance after 15 minutes were higher than those in Examples 1 to 19 in which the flocculant was not used. This control test demonstrates that packs formed instantly in Examples 20-25 by using a flocculant.
Comparative Example 1 is (B) a latex composed of a polymer compound containing a fluorine atom and / or silicon atom in the molecule, which is an essential component of the present invention, or (C) silicon and / or fluorine-based water repellent This is an example in which a component selected from oil repellent compounds was not used. As apparent from Table 8, “durability” and “abrasion resistance” were not so problematic. However, the “adhesion” was inferior to the results of the Examples, and after 3 days from the start of the test, although the pseudo nipple pack was in close contact with the vicinity of the nipple mouth, a gap was visually recognized in the periphery of the pack. Regarding the “pack stain degree”, (C) the water repellent was not used, and therefore the pack was heavily stained by the durability test. This control test demonstrated that (C) the use of a silicon-based and / or fluorine-based water / oil repellent compound greatly contributed to the antifouling effect of the pack. The “bacterial count” was 1000 / cm ² or less. Further, regarding “ease of removing the pack”, it was possible to easily remove the pack with a predetermined cloth.
Comparative Example 2 to Comparative Example 5 are examples in which an organic solvent solution of a polymer compound for preparing a nipple pack material was used as a substrate in accordance with Patent Document 3. As is apparent from Table 8, the “adhesion” was inferior to the results of the examples, and in all of Comparative Examples 2 to 5, the pseudo-nipple pack closely adhered to the vicinity of the nipple mouth after 3 days from the start of the test. However, a gap was visually recognized around the pack. Concerning “durability”, 1 hour to 1 day after the start of the test, although the pack is partially damaged, it is visually recognized that the vicinity of the nipple is covered, and after 2 days, the entire pack is damaged. Or the state which has peeled was visually recognized. Regarding “abrasion resistance”, 15 minutes to 1 hour after the start of the test, the pack was broken, and the state where the teat mouth was completely exposed was visually confirmed. Regarding the “pack stain degree”, (C) the water repellent was not used, and therefore the pack was heavily stained by the durability test. This control test demonstrated that (C) the use of a silicon-based and / or fluorine-based water / oil repellent compound greatly contributed to the antifouling effect of the pack. The “bacterial count” was over 10,000 / cm ² . Moreover, regarding “ease of removing the pack”, it was not possible to remove the pack unless it was wiped with a predetermined cloth 2 to 3 times.
Comparative Example 6 and Comparative Example 7 are cases in which a composition using an alginate is applied according to Patent Document 4. It was found that a lot of bubbles were mixed during kneading and the viscosity of the kneaded material was not uniform, so that it cracked in less than one day, and the adhesion, durability and wear resistance of the pack were extremely low. Since no water repellent was added to the pack material, the endurance test resulted in the pack becoming heavily soiled. Also, the pack could not be removed by simply rinsing with a cloth. That is, as a result of all the tests of “adhesion”, “durability”, “abrasion resistance”, “pack dirt level”, “bacteria count” and “easy to remove the pack”, the nipple pack for milking livestock It has been demonstrated that the forming material is not satisfactory.

Claims (12)

A material for forming a nipple pack for dairy animals for forming a nipple pack that covers and protects the nipple of a dairy animal, comprising at least:
(A) a polymer latex composed of a polymer compound containing no fluorine atom and silicon atom in the molecule;
(B) A polymer latex composed of a polymer compound containing fluorine atoms and / or silicon atoms in the molecule, or (C) a component selected from silicon-based and / or fluorine-based water / oil repellent compounds. A material for forming a nipple pack for dairy livestock.   The polymer latex composed of the polymer compound (B) containing a fluorine atom and / or a silicon atom in the molecule is a silicone rubber, a fluorine rubber, a fluorinated silicone rubber, a silicone rubber-based thermoplastic elastomer or a fluorine rubber-based heat. The material for forming a nipple pack for dairy animals according to claim 1, wherein the plastic elastomer is a dispersoid.   The nipple pack formation of dairy animals according to claim 1, wherein the (C) silicon-based and / or fluorine-based water / oil repellent compound is a silane coupling agent or a perfluoroalkyl group-containing compound. Materials.   The concentration of (B) a polymer latex composed of a polymer compound containing fluorine atoms and / or silicon atoms in the molecule or (C) a silicon-based and / or fluorine-based water / oil repellent compound is a nipple pack formation. The nipple pack forming material for milk livestock according to any one of claims 1 to 3, wherein the content is 0.1 to 10% per mass of the dairy material.   The (C) silicon-based and / or fluorine-based water- and oil-repellent compounds are further mineral oil-based, fatty acid-based, natural oil-based, fatty acid ester-based, alcohol-based, amide-based, phosphate ester-based, metal soap-based or The nipple pack-forming material for dairy animals and livestock according to any one of claims 1 to 4, comprising a kind of water / oil repellent compound selected from the group consisting of mixtures thereof.   Furthermore, the nipple pack formation material for dairy animals and livestock as described in any one of Claims 1-5 containing (D) flocculant for coagulating polymer latex.   The milk product according to claim 6, wherein the flocculant (D) is selected from the group consisting of a low molecular weight inorganic flocculant, a high molecular weight inorganic flocculant, a high molecular organic flocculant, an acid, and a mixture thereof. Material for forming nipple packs for livestock. Using the material for forming a nipple pack for milking livestock described in any one of the above items 1 to 7, polymer fine particles which are a dispersoid of the polymer latex are aggregated on a nipple, and a predetermined thickness is obtained. A method for preventing mastitis, comprising forming a teat pack, comprising forming a film. A kit for forming a nipple pack for dairy animals for forming a nipple pack that covers and protects the nipple of a dairy animal,
(I) a polymer latex composed of a polymer compound containing no fluorine atom and no silicon atom in the molecule (A) contained in a predetermined container;
(Ii) (B) a polymer latex comprised of a polymer compound containing a fluorine atom and / or a silicon atom in the molecule contained in the same or different container as the predetermined container, and (iii) the above (i ) And (ii) A kit for forming a nipple pack for dairy livestock, comprising a combination with (D) a flocculant contained in a container different from the container containing. The milk-producing product according to claim 9, wherein the flocculant (D) is selected from the group consisting of a low-molecular inorganic flocculant, a high-molecular inorganic flocculant, a high-molecular organic flocculant, an acid, and a mixture thereof. Kit for forming nipple packs for livestock. A kit for forming a nipple pack for dairy animals for forming a nipple pack that covers and protects the nipple of a dairy animal,
(I) a polymer latex composed of a polymer compound containing no fluorine atom and no silicon atom in the molecule (A) contained in a predetermined container;
(Ii) (C) a silicon-based and / or fluorine-based water- and oil-repellent compound housed in the same or different container as the predetermined container; and (iii) different from the container in which the (i) is housed. A kit for forming a nipple pack for dairy livestock, comprising a combination with (D) a flocculant contained in a container. 12. Milk production according to claim 11, wherein the flocculant (D) is selected from the group consisting of low molecular weight inorganic flocculants, polymeric inorganic flocculants, polymeric organic flocculants, acids, and mixtures thereof. Kit for forming nipple packs for livestock.