Colgate Palmolive Company

South China University of Technology

Yan Gao

Yun Xu

Min Zhu

Hao Li

Renzong Hu

Zhaoyu Wen

Bin Yuan

Weiliang Peng

Guangxin Lin

Zhiping Zhong

The present invention discloses a compact vehicle-mounted hydrogen-oxygen generator. In the fluid path, the water circulation outlet of the water tank is in communication via one of the two one-way throttle valves with the water pump, which is in communication with the electrolytic tank of the hydrogen-oxygen generator, which is in communication with the water circulation inlet of the water tank through the other one-way throttle valve, and the gas outlet of the water tank is in communication with an engine air-inlet via the steam-water separator and the dry flame arrester in turn. In the circuit, the water pump and the electrolytic tank of the hydrogen-oxygen generator are connected in parallel to the ends of the positive and negative electrodes of the vehicle power supply, respectively; the switch, the fuse and the electrolytic tank of the hydrogen-oxygen generator are connected in series to the vehicle power supply. The present invention realizes high-efficiency electrolysis through a porous electrode rod with high specific surface area, high catalytic activity, high electrical conductivity and high surface energy (being hydrophilic and air-repellent), as well as the compact design of tightly nested stainless steel sleeves; on the premise of meeting the gas production requirements, the present invention reduces the volume and weight of the electrolytic tank; the present invention realizes the single electrolytic chamber assembly of the vehicle-mounted hydrogen-oxygen generator, and allows direct connection to a single sealed electrolytic chamber in the circuit and the fluid path, effectively avoiding the problem with the serial connection of multiple electrolytic chambers.

Compact hydrogen-oxygen generator

Disclosed herein are methods for evaluating the whitening effect of oral care composition on a stained egg comprising staining an eggshell, applying the oral care composition to a portion of the stained eggshell to obtain a treated eggshell area, calculating a &#x394;E value for the difference in color of the treated eggshell area compared to untreated stained eggshell when calculated in L*a*b color space, wherein the oral care composition comprises at least one high cleaning silica for stain removal. Further disclosed herein are methods for demonstrating the whitening effect of an oral care composition on a stained egg comprising showing an egg that has been stained to at least one consumer and brushing an oral care composition comprising at least one high cleaning silica for stain removal on a portion of the stained eggshell to obtain a treated eggshell area.

Methods for evaluating the stain removal efficacy of dentifrices

Growing community of inventors

Guangzhou, China

Yan Gao