Particle defoamer comprising a silicone emulsion and process for preparing same

US9023781B2 · kind B2 · utility

Assignee

• NANJING SIXIN SCIENTIFIC-TECHNOLOGICAL APPLICATION RESEARCH INSTITUTE CO. LTD. · CN

Inventors

• Yueqin Chi · 安丰镇, CN
• Fei Wu · Beijing, CN
• Tian Cao · Nanjing, CN
• Qiang Zhang · Dalian, CN
• Hualan Sui · 安丰镇, CN
• Wei Huang · Taoyuan District, TW

Key dates

• Filing date: Dec 14, 2011
• Grant date: May 5, 2015
• Expiry date: Dec 14, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/82
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing a particle defoamer. The particle defoamer of 55%-75% of a carrier, 15%-35% of a silicone emulsion, 3%-10% of a texturing agent and 2%-10% of a solvent, based on the total weight of the particle defoamer; the process for preparing the particle defoamer is: (1)first adding a carrier A1 into a mixer, and then adding thereto a silicone emulsion B1, and stirring uniformly; (2)adding a carrier component A2 to the mixture obtained in (1), and stirring uniformly; (3)adding a silicone emulsion B2 to the mixture obtained in (2), and, after uniformly stirring, adding the solvent thereto and stirring uniformly; and (4)pelleting and drying by baking the mixture obtained in(3), so as to produce the product.