Ecolab USA Inc.

Lenovo (Beijing) Limited

Covestro Intellectual Property Gmbh & Co. Kg

Unilever IP Holdings B.v.

Unilever Global IP Limited

Na Xu

Meng Zhang

Yulin Zhao

Jun Li

Hans-Josef Laas

Kai Wang

Hao Liu

Christoph Irle

Tian Xia

Jun Shen

Bo Zhu

Rongfeng Feng

Ling Yang

Yaguang Ma

Yanchao Chen

Guoping Shi

Chunhao Wang

Eva Tejada Rosales

Jiemin Ge

The present invention relates to a modified polyisocyanate and use thereof, in particular as a crosslinking component of water-soluble or water-dispersible coatings. The modified polyisocyanate is obtained by a reaction of a system comprising the following components: at least an aminosulfonic acid; at least a polyisocyanate; at least a tertiary amine; and optionally a polyether alcohol containing an ethylene oxide group. The modified polyisocyanate comprises at least an iminooxadiazinedione structure and at least an isocyanurate structure, the weight ratio of the iminooxadiazinedione structure to the isocyanurate structure being 1:300 to 1:5. The amount of sulfonate group of the modified polyisocyanate is 0.75% by weight to 1.1% by weight, based on the amount of the modified polyisocyanate as 100% by weight. The viscosity thereof is 500 mPa&#xb7;s to 10000 mPa&#xb7;s, as determined according to DIN EN ISO 3219:1994-10 at a temperature of 23&#xb0; C. and a shear rate of 10 s. The coating comprising the modified polyisocyanate of the present invention can be manually stirred well, and the resulting coating layer has high gloss and good transparency.

Modified polyisocyanate

A method of enhancing paper strength properties is provided. The method comprises treating a paper sheet precursor with a polyaluminum salt, and a strengthening agent, wherein the strengthening agent comprises a dialdehyde-modified polyacrylamide copolymer and a polyacrylamide copolymer. The polyaluminum salt may be polyaluminum chloride. The methods have been demonstrated to provide, among other things, improvements in retention, strength, and dewatering.

High-efficiency strength program used for making paper in higher charge demand system

The present disclosure relates to a dry strength agent composition, use of an amine-containing cationic polymer for enhancing the dry strength of paper, and a method for enhancing the dry strength of paper. The dry strength agent composition includes at least two components. The first component is an amine-containing cationic polymer and the second component may be one or more anionic or amphoteric polymers.

Dry strength agent composition and method for enhancing the dry strength of paper

An on-line control and reaction process for pH adjustment and a control device for automatically adjusting pH value are provided. The process includes mixing a first enhancer and a second enhancer, optionally after diluting the first enhancer and/or the second enhancer with water, to form a mixture, setting a base pH value (&#x3b4;) and a target pH value (&#x3b4;), and adding pH adjuster into the mixture via a pH control unit and mixing to obtain a product with the target pH value. The pH control unit adjusts the adding of the pH adjuster by measuring or inputting certain parameters.

On-line control and reaction process for pH adjustment

A paper-making aid composition comprising dialdehyde-modified polyacrylamide-type strengthening agent, polyacrylamide-type strengthening agent and water and having a pH value of 6 or more is provided. A method of paper-making by using the paper-making aid composition is also provided.

Paper-making aid composition and process for increasing ash retention of finished paper

The invention provides a process for paper-making comprising adding to pulp slurry at least a first aqueous liquid and a second aqueous liquid so as to obtain a paper stock; forming the paper stock so as to obtain a wet paper web; pressing and draining the wet paper web so as to obtain a wet paper sheet; and drying the wet paper sheet so as to obtain a paper sheet. Correspondingly, the invention provides an aid composition for paper-making.

Process and compositions for paper-making

An anti-virus method based on a security chip according to the present invention is provided. The method comprises the following steps: a hash value obtained by a hashing operation for a computer key file and a system control program are stored in a memory of the security chip, and a backup file of the computer key file is stored in a backup storage area. When power up, the integrity of the system control program is verified by using the hash value of the system control program stored in the memory of the security chip. If the system control program is integral, a control is executed by the system control program, and the system control program verifies the integrity of the computer key file using the hash value of the computer key file stored in the memory of the security chip. If all the computer key files are integral, the operating system is started; on the contrary, if any of the computer key file is not integral, it will be restored using the backup file of the computer key file stored in the backup storage area.

Anti-virus method based on security chip

Growing community of inventors

Shanghai, China

Na Xu