Powdered fluorescent Dacron whitening agent and its production process

Application Number: 00110362
Application Date: 2000.04.27
Publication Number: 1269383
Publication Date: 2000.10.11
Priority Information:
International: C09B67/00;D06L3/12
Applicant(s) Name: Quanwane (Shenyang) Chemical Industry Co., Ltd.
Address:
Inventor(s) Name: Zhang Xinyue;Chen Luancai
Patent Agency Code: 00000
Patent Agent:
Abstract The present invention relates to a powdery polyester fluorescent whitening agent and its production process. It is characterized by that its composition is formed from ER raw powder and organic sulfosalt according to the mixing ratio of 1 : 0.2-1 or ER raw powder, organic sulfosalt and emulsifier according to the mixing ratio of 1 : 0.2-1 : 0.05-0.1. Its production process includes the following steps: grinding ER raw powder and organic sulfosalt in grinding machine, adding proper quantity of water and grinding at 20-60 deg.C until the grain size of raw powder is less than and equal to 2 micron, then drying at 105-130 deg.C to obtain powdery material; when the emulsifier is added, it can be charged into grinding machine for grinding together with the above-metioned materials.

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