A method for manufacturing a self-disinfecting glove, the method comprising dissolving an elastomer in a solvent to form a solution, wherein the elastomer is selected from the group consisting of synthetic rubber, natural rubber, and nitrile. Adding of a photosensitizer to the elastomer solvent solution and evaporating the solvent solution to form a film, wherein the photosensitizer is selected from the group consisting of methylene blue, hypericin and titanium dioxide. Next hot pressing of the film above elastomer's melting point to form a sheet. Finally cutting, stacking and hot pressing the sheet again to enable even spread of the photosensitizer throughout the sheet.

The present invention provides a rubber composition that can exhibit excellent low heat build-up, tear strength, and durability; and a rubber composition having excellent low heat build-up, tear strength, and durability, by incorporating a compound represented by the following formula (1) or (2), or a salt of the compound.

##STR00001##

In the formula (1), R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different, and each represents a hydrogen atom, an alkyl group, or the like; R.sub.3 and R.sub.4 may be taken together to form an alkylidene group, and any two of R.sub.2, R.sub.3, and R.sub.4 may be taken together to form an alkylene group; and each of these groups may have one or more substituents.

##STR00002##

In the formula (2), R.sub.5, R.sub.7, and R.sub.8 are the same or different, and each represents a hydrogen atom or an amino group; and R.sub.6 represents an alkyl group or an aralkyl group; and each of these groups may have one or more substituents.

Branched block copolymers, derived from alkenyl aromatic hydrocarbon-1,3-diene monomer system, and branched polyisoprene homopolymers, derived from isoprene, are obtained by polymerization in the presence of an anionic initiator; at a temperature from 0° C. to 100° C.; followed by coupling with a multifunctional coupling agent of formula (R.sup.1O).sub.3Si—Y—Si(OR.sup.2).sub.3, wherein R.sub.1 and R.sub.2 are independently C.sub.1-C.sub.6 alkyl groups; and Y is a C.sub.2-C.sub.8 alkylene group. The polymers thus obtained can be used in many applications, including rubber cements having high solids content and low zero shear viscosities, and for producing aqueous latices therefrom.

The thermally conductive resin sheet of the present invention has a heat conductivity of 7 W/m.Math.K or more, a 30% compressive strength of 1500 kPa or less, and a rate of change of the 30% compressive strength of 30% or less after a heat resistance test in which the thermally conductive resin sheet is heated for 1000 hours at 150° C. According to the present invention, a thermally conductive resin sheet with good heat conductive property and flexibility and long-term stability of physical properties such as not becoming hardened over time can be provided.

The present invention discloses a multilayer composite rubber-plastic foam insulation material and a preparation method thereof. The composite rubber-plastic foam insulation material includes a two-layer structure; the two-layer structure includes an insulation layer and a first functional layer; the insulation layer and the first functional layer are both made of a rubber-plastic foam material; the first functional layer and the insulation layer are integrally molded by blending extrusion and vulcanization foaming, and the first functional layer and the insulation layer form an integral structure. The multilayer composite rubber-plastic foam insulation material provided by the present invention adopts a vulcanization foaming integral molding process, and not only ensures the thermal insulation property of the insulation layer, but also gives the functional layer corresponding functions by selecting different functional polymers, thereby satisfying a variety of personalized needs in engineering applications.

A heat-conducting sheet according to the present invention is a heat-conducting sheet having an initial Asker C hardness of 50 or less, the heat-conducting sheet containing an elastomer resin at the volume proportion of 30 to 70%, and a thermally conductive filler at the volume proportion of 30 to 70%, in which the elastomer resin has a viscosity at 25° C. of 3000 Pa.Math.s or less, and the elastomer resin has a lamella length of 20 mm or more. According to the present invention, a heat-conducting sheet which has initial flexibility sufficient to exhibit excellent shape conformability and in which residual stress is reduced after compression by applying pressure can be provided.

A new Acidithiobacillus ferrooxidans strain as well as a process for bacterially devulcanizing sulphur-vulcanized rubber particles and devulcanized rubber particles obtainable by the process.

The present application provides a resin component, and a prepreg and a circuit material using the same. The resin component comprises unsaturated polyphenylene ether resin, polyolefin resin, terpene resin and an initiator. When the total weight of the unsaturated polyphenylene ether resin, polyolefin resin and terpene resin is defined as 100 parts by weight, the terpene resin is in an amount of 3-40 parts by weight. The polyolefin resin is one or a combination of at least two selected from the group consisting of unsaturated polybutadiene resin, SBS resin and styrene butadiene resin. The present application discloses that the resulting resin composition has good film-forming properties, adhesion and dielectric properties through the coordination of unsaturated polyphenylene ether resin, unsaturated polyphenylene ether resin, polyolefin resin and terpene resin, and the circuit boards using the same have higher interlayer peel strength and lower dielectric loss.

Disclosed herein are processes for preparing a resin-extended rubber by mixing at least one thermoplastic resin with a resin-rubber-solvent cement comprising at least one conjugated diene monomer-containing rubber and the resin-extended rubber resulting from such processes. Also disclosed is a resin-extended rubber-solvent-cement comprising at least one conjugated diene monomer-containing rubber, at least one non-polar solvent, and at least one thermoplastic resin as well as a rubber composition comprising a resin-extended rubber.

The present invention provides a liquid antioxidant composition used for raw rubbers comprising 5% to 30% by weight of at least one aromatic amine-based antioxidant agent, 20% to 70% by weight of at least one hindered phenol-based antioxidant agent, 0% to 40% by weight of at least one phosphite-based antioxidant agent; and 20% to 40% by weight of at least one solvent having boiling point higher than 185° C. and freezing point lower than −10° C. under 101.325 KPa, the weight percentage of component a), b), c) or d) is based on the total weight of antioxidant composition, wherein the mixture of component a), b) and c) is liquid at 25° C. under 101.325 KPa. The weight percentage is based on the total weight of antioxidant composition. The present invention further provides an application of said liquid antioxidant composition in raw rubbers such as natural rubber and raw rubbers synthesized via solution polymerization.