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CELLOSIZE QP-09L

Product Description
CELLOSIZETM QP 09L hydroxyethyl cellulose (HEC) is a low molecular weight cellulosic polymer that is used extensively as a protective colloid in both emulsion and suspension polymerization. In the production of latexes for architectural coatings, the typical use level of CELLOSIZE QP 09L HEC is 2% by weight (based on total monomers) in vinyl and vinyl-acrylic latex formulations, and usually less in all-acrylic formulations. Some latex manufacturers prepare more concentrated stock solutions for subsequent dilution immediately prior to latex synthesis. In suspension polymerization, CELLOSIZE QP 09L HEC is also used in the manufacture of expandable polystyrene beads. A typical use level in suspension polymerization is 0.4%, based on total monomer charge. CELLOSIZE QP 09L HEC is the lowest molecular weight hydroxyethyl cellulose product offered by The Dow Chemical Company, and aqueous solutions are nearly Newtonian in their rheology.

应用

chemical processing, emulsion and suspension polymerization

物理特性

 项目  范围  方法
 粘度(2%水溶液) 75-112cp  1B-44C-0.1
 不溶物  <0.07%  1B-44C-0.2
 挥发物  <5.0%  1B-44C-0.3
 pH值(2%水溶液)  6.0-7.0  1B-44C-0.4
 水和时间  5-15分钟  1B-44C-0.55
 粒径(#20网眼筛)  >98%  1B-44C-0.6

脚注信息
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