Methods to make a silica elastomer composite with a destabilized dispersion of silica are described, along with silica elastomer composites made from the methods. The advantages achieved with the methods are further described.

A method for making rubber films with improved ESD (electrostatic discharge) property relates to a method for making better ESD gloves using improved rubber composition with a precipitated CaCO.sub.3 filler. In addition, non-metallic filled organic pigment such as AZO compounds are suggested to make better ESD gloves. Additionally, other improved method steps such as chlorination and addition of Carbon Black in conjunction with chlorination are suggested to make better ESD gloves.

The present invention aims to provide a method for producing a masterbatch with improved rubber physical properties such as tensile strength at break, rigidity, and fuel economy at high productivity by enhancing the amount of fillers incorporated into rubber and the dispersibility of fillers in rubber, as well as related products. The present invention relates to a method for producing a masterbatch, including: step (1) of mixing a rubber latex having a zeta potential of 100 to 20 mV with a filler dispersion having a zeta potential of 120 to 10 mV to prepare a latex compound; step (2) of adjusting the zeta potential of the latex compound obtained in step (1) to 30 to 0 mV; and step (3) of solidifying the coagulum obtained in step (2) with an organic solvent.

A process for preparing graphene oxide includes the steps of subjecting an aqueous dispersion of a graphite to an exfoliation step by high shear mixing at a mixing speed equal to or greater than 3000 rpm and to an oxidation step with an oxidizing agent selected from hydrogen peroxide, potassium hydroxide and mixtures thereof, wherein the graphite exfoliation step can precede, follow or be conducted together with the oxidation step. Also related is the use of the graphene oxide thus obtained to impart antimicrobial properties to rubber articles.

A coated balloon with color and shimmering effects and process of making the same. A balloon may be placed on a mould apparatus. A balloon having a rubber ink solution applied to the surface by a dipping process allowing the entire surface of the latex balloon to be coated by the rubber ink solution. The balloon having specific amount of glitter rotationally applied to the entire surface. The latex balloon coated, treated and cured to allow for the ink and glitter to remain affixed to the entire balloon surface in a deflated and expanded state.

The invention provides a novel hydrophilic polymer and latex polymer blend coating formulation and compositions thereof, and their use on various devices (e.g., prophylactic and medical devices) to form hydrophilic and flexible coatings with durable lubricity.

The present invention relates to a non dusty polymer powder composed of aggregated latex particles prepared by a multistage preparation process.

The present invention provides a method for producing a masterbatch and related products which enhance the dispersibility of fillers in rubber to improve rubber physical properties such as tensile strength, rigidity, and fuel economy. Provided is a method for producing a masterbatch, including: step (1) of mixing a rubber latex having a zeta potential of 100 to 20 mV with a filler dispersion having a zeta potential of 90 to 10 mV to prepare a latex compound; and step (2) of adjusting a zeta potential of the latex compound prepared in step (1) to 30 to 0 mV.

The present invention provides, inter alia, a method for producing a masterbatch in which the dispersibility of microfibrillated plant fibers is further increased to obtain excellent processability and improved rubber properties such as fuel economy, tensile strength, and elongation at break. The present invention relates to a method for producing a masterbatch, the method including step (I) of mixing a rubber latex with microfibrillated plant fibers oxidized with an N-oxyl compound to obtain a mixture, and coagulating the mixture by adjusting its pH to 2 to 6.

The present invention provides a method for producing a masterbatch and related products which enhance the dispersibility of fillers in rubber to improve the balance of tensile strength, rigidity, and fuel economy. Provided is a method for producing a masterbatch, including a step of mixing a rubber latex having a zeta potential of 100 to 20 mV with a filler dispersion having a zeta potential of 10 to 90 mV, and preparing a latex compound having a zeta potential of 20 to 0 mV.