Tokusen, U.s.a., Inc.

Charles E Smith, Jr

Takanori Kobayashi

William E Smith

Insoo Kim

Young Jin Kim

Noritaka Morioka

Woo Jin Lee

A process for synthesizing nano-sized rutile, anatase, or a mixture of rutile and anatase TiOpowder. The process includes the steps of: 1) forming a Ti-peroxo complex by mixing HOwith a Ti compound, and 2) heating the Ti-peroxo complex at a temperature of above 50&#xb0; C. A primary particle size of TiOparticles, synthesized by the method, is below 50 nm, and an agglomerated particle size thereof after a washing/dry process is below about 10 &#x3bc;m. The major characteristics of the present invention are that it is a low temperature process, a highly concentrated synthesis, and high production yield of above 90%.

Low temperature process for producing nano-sized titanium dioxide particles

A tire cord having core filaments () performed into a helical configuration while maintaining the core filaments () in a parallel, side-by-side relationship. The core filaments () are not twisted or stranded together. High tensile strength sheath filaments () are also performed into a flattened helical configuration so that the sheath filaments () can be wrapped around the side-by-side core filaments such that the sheath filaments () do not put such tension on the core filaments () as to cause the core filaments () to bunch. The core filaments () are maintained in a flat side-by-side configuration so that no voids are formed and rubber can penetrate into the tire cord. The core filaments () may number from three to six and the sheath filaments () from one to seven. The cross-section of the tire cord is flattened and confined within an oval-shaped outer bound (), the oval outer bound () being characterized by a major axis and a minor axis. It is desirable that the minor axis be no greater than 60% of the major axis to create the appropriate difference in the bending modulus of the tire cord in the horizontal versus the vertical direction.

Flattened helical tire cord

A tire cord having core filaments preformed into a helical configuration while maintaining the core filaments in a parallel, side-by-side relationship. The core filaments are not twisted or stranded together. High tensile strength sheath filaments are also preformed into a flattened helical configuration so that the sheath filaments can be wrapped around the side-by-side core filaments such that the sheath filaments do not put such tension on the core filaments as to cause the core filaments to bunch. The core filaments are maintained in a flat, side-by-side configation so that no voids are formed and rubber can penetrate into the tire cord. The core filaments may number from three to six and the sheath filaments from one to seven. The cross-section of the tire cord is flattened and confined within an oval-shaped outer bound, the oval outer bound being characterized by a major axis and a minor axis. It is desirable that the minor axis be no greater than 60% of the major axis to created the appropriate difference in the bending modulus of the tire cord in the horizontal versus the vertical direction.

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Conway, AR, United States of America

Charles E Smith, Jr