Chun Well Industry Co. Ltd.

Allnew Chemical Technology Company

Other

Cpc Corporation, Taiwan

Maw-Tien Lee

Fu-Ming Lee

Jen-Ray Chang

Zih-Yao Shen

Liang-Hsign Chou

Kuo-Ji Yen

John K Lee

Chi-Yao Chen

Shou-Ming Lee

Tzong-Bin Lin

Cheng-Tsung Hong

Jeng-Cheng Lee

Wei-Chih Hung

Chun-Lung Wu

Shih-Chieh Yang

Cho-Kun Yang

Ray-Lung Lin

A hydrophobic admixture, for cementitious materials such as cement paste, mortar, and concrete, includes solid polymer particles with a coating of hydrophobic agent and surfactant. The solid polymer particles adhere to exterior surfaces of hydrated cement particles in the cement matrix. The solid polymer particles deliver the hydrophobic agent into the cement matrix which is hydrophilic. The hydrophobic agents are distributed uniformly throughout the cement matrix. The solid polymer particles can be crumb rubber particles derived from waste rubber tires, recycled plastics and similar solid materials. The hydrophobic liquid agent is derived from waste lubricant oil, spent motor oil, base oil, esters of fatty acids, vegetable oil and the like. Fine particles such as activated carbon, silica fume and spent catalyst can be employed to fill the large pores or cracks that develop in the cementitious matrix. The cured cementitious materials exhibit high contact angles and high compressive strengths.

Producing cementitious materials with improved hydrophobicity and strength using reclaimed waste substances

A high capacity magnetic filter separates diamagnetic and/or paramagnetic substances from fluid streams. Diamagnetic solid substances are magnetized under an external magnetic field through coordinated interaction of diamagnetic solid substances with an inducement paramagnetic material (IPM). The magnetic filter serves as a separation zone created by the presence of IPM and magnets that are shielded from the IPM by non-magnetic sleeves or partitions. The IPM in the void volume between the magnets affords large surface area onto which diamagnetic and paramagnetic materials can contact and be attracted to. The relative position and distance of the magnetic source, such a magnetic bar or electromagnet, to the solid mixture of diamagnetic and IPM are adjusted to induce sufficiently strong magnetism in the diamagnetic solids which causes the diamagnetic solids to be attracted by the magnetic field as well. Both diamagnetic and paramagnetic substances can be removed from a liquid or gas.

Filters for paramagnetic and diamagnetic substances

Non-basic and non-acidic homogeneous catalysts organo-metallic compound of the formula: M(OCH)wherein M is B, Na, Mg, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Al, Sn, Sb, Mo, Ag, and Cd and x is an integer from 2, 3 or 4 can catalyze transesterification of oils and fats having high free fatty acid content and with an acid number from 0.5 to 20, into biodiesel. B(OCH)and Ge(OCH), having low boiling points, are easily recovered from the biodiesel and glycerol phases and recycled for reuse. Continuous biodiesel production with the novel homogenous catalysts is achieved without the complicated and troublesome steps attendant with conventional processes using base or acid homogeneous catalyst. The high purity biodiesel is produced without acid-base neutralization, water wash, filtration, and solid disposal steps for removing the spent catalyst from the product streams associated with prior techniques.

Homogeneous catalysts for biodiesel production

Partial oxidation of crumb rubber derived from environmental hazardous waste tires yields surface treated crumb rubber which are used as blending stocks for making rubberized concrete with substantially improved mechanical strength as compared to the conventional rubberized concrete. The chemically more active rubber surface becomes hydrophilic, so it interacts with the hydrophilic surface of surrounding cement matrix much stronger. The mechanically improved rubberized concrete is more versatile than conventional rubberized concrete.

Method for producing improved rubberized concrete using waste rubber tires

Catalytic partial oxidation using a metal oxide catalyst surface treats crumb rubber that is recovered from waste rubber tires. Advantages of using catalytically oxidized crumb rubber relative to using non-catalytically oxidized crumb rubber in making the rubberized concrete, includes superior mechanical strength and water-repealing capability, lower oxidation temperature and shorter oxidation time, and accelerated hydration times. Rubber oil (a gas condensate) co-produced from the crumb rubber partial oxidation process is equal to or better than the commercial superplasticizers. Industrial scale partial oxidation employs a continuous flow tubular reactor where a crumb rubber/catalyst mixture is fed into the reactor co-currently with an air/nitrogen mixture.

Method for producing rubberized concrete using waste rubber tires

Partial oxidation of crumb rubber derived from environmental hazardous waste tires yields surface treated crumb rubber and a gas condensate which are used as blending stocks for making rubberized concrete with substantially improved mechanical strength as compared to the conventional rubberized concrete. The chemically more active rubber surface becomes hydrophilic, so it interacts with the hydrophilic surface of surrounding cement matrix much stronger. The gas condensate co-produced in the partial oxidation reactor consists of mainly active sulfur oxides (R&#x2014;SO&#x2014;R) and serves as an excellent bonding agent to further enhance the bonding strength between the partially oxidized rubber particles and the cement mixes. The mechanically improved rubberized concrete is more versatile than conventional rubberized concrete.

Growing community of inventors

Chia-Yi, Taiwan

Maw-Tien Lee