Inventors: Chen LX, He XW, Ma XH, Pu XL, Zhang YK
Patent Title: Sulfonylurea weedicide molecularly imprinted polymer microballoon and preparation method thereof
Publication date: 2010
Publication number: CN101716495

Abstract: The invention relates to a sulfonylurea weedicide molecularly imprinted polymer microballoon and preparation method thereof. In the invention, a precipitation method is used for synthesizing ball-shape imprinted polymers of micron-sized by selecting functional units and cross-linking agents in certain proportion, wherein the particle diameter range is 1-2 microns in the invention. The preparation method comprises the following steps of: pre-polymerizing templates, the functional units and pore-foaming agents in certain proportion under ultrasonic waves for several hours; then adding a certain amount of the cross-linking agents and evocating agents; and carrying out reaction in two steps after the steps of ultrasonic wave treatment and nitrogen introduction, wherein the first step is to raise the temperature to 60 DEG C from room temperature within 40 min, and the second step is to react for 24h at 60 DEG C at the rotating speed r of 30 rpm. The method has simple operation, excellent repeatability and wide application prospect.
URL: http://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20100602&DB=EPODOC&locale=en_EP&CC=CN&NR=101716495A&KC=A&ND=4