A conjugated diene-based copolymer composition, a method of preparing the same, and a rubber composition including the same are provided. The conjugated diene-based copolymer composition includes a first conjugated diene-based copolymer and a second conjugated diene-based copolymer each including a repeating unit derived from an aromatic vinyl monomer, a repeating unit derived from a conjugated diene-based monomer, and a repeating unit derived from a hydroxyalkyl (meth)acrylate monomer. The first conjugated diene-based copolymer includes 0.01 wt % to 1 wt % of the repeating unit derived from the hydroxyalkyl (meth)acrylate monomer, and the second conjugated diene-based copolymer includes 4.5 wt % to 6.5 wt % of the repeating unit derived from the hydroxyalkyl (meth)acrylate monomer.

A glove that is detectable by a metal detector. The glove is prepared from latex formulation including a metallic additive. The metallic additive includes a pigment, a surfactant and a solvent. The metallic additive is used in an amount of at least 10 phr based on an amount of a latex formulation.

A glove that is detectable by a metal detector. The glove is prepared from latex formulation including a metallic additive. The metallic additive includes a pigment, a surfactant and a solvent. The metallic additive is used in an amount of at least 10 phr based on an amount of a latex formulation.

The present invention relates to method of preparing a heterogeneous composite chemical curative dispersion with high reactivity and less chemicals consumption for making elastomeric article. Said method comprising the steps of: preparing a metal composite; adding alkaline solution in said metal composite to form a mixture; pulverizing said mixture; and adjusting total solid content in said mixture; characterized in that prior to adjusting the total solid content, subjecting the pulverized mixture to excessive hydroxyl ion and heat above 100° C. to obtain the mixture in a paste form, whereby said step activates and enhances reactivity at ionic and atomic level of the mixture; mixing stabilizer, surfactant and water into said mixture to form said heterogenous composite chemical curative dispersion.

The present invention relates to method of preparing a heterogeneous composite chemical curative dispersion with high reactivity and less chemicals consumption for making elastomeric article. Said method comprising the steps of: preparing a metal composite; adding alkaline solution in said metal composite to form a mixture; pulverizing said mixture; and adjusting total solid content in said mixture; characterized in that prior to adjusting the total solid content, subjecting the pulverized mixture to excessive hydroxyl ion and heat above 100° C. to obtain the mixture in a paste form, whereby said step activates and enhances reactivity at ionic and atomic level of the mixture; mixing stabilizer, surfactant and water into said mixture to form said heterogenous composite chemical curative dispersion.

A latex composition containing a conjugated diene polymer latex and a medium-chain fatty acid glyceride, wherein a content proportion of the medium-chain fatty acid glyceride is 1 to 40 parts by weight with respect to 100 parts by weight of the conjugated diene polymer. In the present invention, a medium-chain fatty acid forming the medium-chain fatty acid glyceride is preferably a fatty acid having 6 to 18 carbon atoms. In the present invention, the medium-chain fatty acid glyceride is preferably a medium-chain fatty acid triglyceride. The latex composition preferably further contains a crosslinking agent.

A latex composition containing a conjugated diene polymer latex and a medium-chain fatty acid glyceride, wherein a content proportion of the medium-chain fatty acid glyceride is 1 to 40 parts by weight with respect to 100 parts by weight of the conjugated diene polymer. In the present invention, a medium-chain fatty acid forming the medium-chain fatty acid glyceride is preferably a fatty acid having 6 to 18 carbon atoms. In the present invention, the medium-chain fatty acid glyceride is preferably a medium-chain fatty acid triglyceride. The latex composition preferably further contains a crosslinking agent.

A method for producing a composition containing a latex of a nitrile rubber of α,β-ethylenically unsaturated nitrile monomer unit of 8 to 60 wt % content, and an iodine value of 120 or less, an isothiazoline-based compound represented by formula (1), and a benzisothiazoline-based compound represented by formula (2), both in a content of 26 ppm by weight or more to the rubber, wherein adding both compounds to the latex at 2,000 ppm by weight/min or less, at 50° C. or lower, and the compounds in an aqueous state having 0.1 to 40 wt % concentration. ##STR00001## formula (1), R.sup.1 and formula (2), R.sup.4 represents a hydrogen atom, or a substituted or unsubstituted organic group; wherein formula (1) R.sup.2 and R.sup.3 represent a hydrogen atom, a halogen atom, or an substituted organic group; and formula (2), R.sup.5 represent a hydrogen atom, or an substituted organic group, and an integer “n” of 0 to 4.

A method for producing a composition containing a latex of a nitrile rubber of α,β-ethylenically unsaturated nitrile monomer unit of 8 to 60 wt % content, and an iodine value of 120 or less, an isothiazoline-based compound represented by formula (1), and a benzisothiazoline-based compound represented by formula (2), both in a content of 26 ppm by weight or more to the rubber, wherein adding both compounds to the latex at 2,000 ppm by weight/min or less, at 50° C. or lower, and the compounds in an aqueous state having 0.1 to 40 wt % concentration. ##STR00001## formula (1), R.sup.1 and formula (2), R.sup.4 represents a hydrogen atom, or a substituted or unsubstituted organic group; wherein formula (1) R.sup.2 and R.sup.3 represent a hydrogen atom, a halogen atom, or an substituted organic group; and formula (2), R.sup.5 represent a hydrogen atom, or an substituted organic group, and an integer “n” of 0 to 4.

A method for producing a composition containing a latex of a nitrile rubber of α,β-ethylenically unsaturated nitrile monomer unit of 8 to 60 wt % content, and an iodine value of 120 or less, an isothiazoline-based compound represented by formula (1), and a benzisothiazoline-based compound represented by formula (2), both in a content of 26 ppm by weight or more to the rubber, wherein adding both compounds to the latex at 2,000 ppm by weight/min or less, at 50° C. or lower, and the compounds in an aqueous state having 0.1 to 40 wt % concentration. ##STR00001## formula (1), R.sup.1 and formula (2), R.sup.4 represents a hydrogen atom, or a substituted or unsubstituted organic group; wherein formula (1) R.sup.2 and R.sup.3 represent a hydrogen atom, a halogen atom, or an substituted organic group; and formula (2), R.sup.5 represent a hydrogen atom, or an substituted organic group, and an integer “n” of 0 to 4.