Method of making polymeric bead from phosphorous acid containing monomers

A technology of polymer beads and acid monomers, which is applied in the field of preparing polymer beads from monomers containing phosphorus-containing acid, and can solve the problems of small average particle size of polymer beads and the like

Inactive Publication Date: 2012-07-04
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that it produces polymer beads with an average particle size of less than 1 micron

Method used

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  • Method of making polymeric bead from phosphorous acid containing monomers
  • Method of making polymeric bead from phosphorous acid containing monomers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In a 2-liter laboratory reactor, 390 grams of deionized water, 138 grams of NaCl, and 2.6 grams of sodium carboxymethylcellulose were added under stirring at 200 rpm. In a monomer preparation tank, add 150 grams of glacial methacrylic acid (GMAA), 150 grams of PEM, 24 grams of divinylbenzene (63%) (DVB), and 5.8 grams of bis(4-tert-butyl-cyclohexyl)peroxide Oxydicarbonate. Stirring was stopped in the polymerization reactor, and the monomer mixture was added to the reactor. The reactor was then stirred at 150 rpm during the run. The temperature was designed to be held at room temperature for 30 minutes, heated to 58°C and held for 5 hours, then heated to 97°C and held for 3 hours. The reaction was then cooled to room temperature. The batch was washed with excess water, sieved, dried with suction on a Buchner funnel and packaged.

Embodiment 2

[0027] In a 2-liter laboratory reactor, 390 grams of deionized water, 138 grams of NaCl, and 2.6 grams of sodium carboxymethylcellulose were added under stirring at 200 rpm. In a monomer preparation tank, add 150 grams of glacial methacrylic acid (GMAA), 150 grams of PEM, 24 grams of divinylbenzene (63%) (DVB), and 5.8 grams of bis(4-tert-butyl-cyclohexyl)peroxide Oxydicarbonate. Stirring was stopped in the polymerization reactor, and the monomer mixture was added to the reactor. The reactor was then stirred at 250 rpm for 30 minutes, then heated to 58°C for 5 hours, then to 97°C for 3 hours. The reaction was then cooled to room temperature. The batch was washed with excess water, sieved, dried with suction on a Buchner funnel and packaged.

Embodiment 3

[0029] In a 2-liter laboratory reactor, 390 grams of deionized water, 138 grams of NaCl, and 2.6 grams of sodium carboxymethylcellulose were added under stirring at 200 rpm. In a monomer preparation tank, add 50 grams of glacial methacrylic acid (GMAA), 250 grams of PEM, 12 grams of divinylbenzene (63%) (DVB), and 5.8 grams of bis(4-tert-butyl-cyclohexyl)peroxide Oxydicarbonate. Stirring was stopped in the polymerization reactor, and the monomer mixture was added to the reactor. The reactor was then stirred at 150 rpm for 30 minutes, then heated to 58°C for 5 hours, then to 97°C for 3 hours. The reaction was then cooled to room temperature. The batch was washed with excess water, sieved, dried with suction on a Buchner funnel and packaged.

[0030] The data for Examples 1-3 are presented in the table below.

[0031]

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PUM

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Abstract

The present invention relates to a method of making polymeric bead from phosphorous acid containing monomers, especially a method for making a polymeric bead by suspension polymerization processes from a phosphoric acid monoester.

Description

technical field [0001] The present invention is a process for the preparation of polymer beads from monomers comprising phosphorous acids by a suspension polymerization process. Background of the invention [0002] Polymer beads have been prepared in the art by polymerization of various monomers. Typically, methods of making these polymeric beads are laborious and require expensive monomeric materials. Also, when functionalized polymers are desired, an additional functionalization step is often required to functionalize the resulting polymer. This adds expense, waste generation and loss of efficiency to the polymer manufacturing process. [0003] In an attempt to minimize waste and address cost and efficiency losses in a one-step process, a class of monomers has been used in the art that does not require an additional functionalization step due to their inherent functional groups. Monomers containing phosphorus-containing acids, such as phosphoroalkylmethacrylates, have b...

Claims

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Application Information

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IPC IPC(8): C08F230/02C08F220/06C08F212/36C08F2/18C08J9/00
CPCC08F2/20C08F230/02C08F220/06C08F212/36C08F2/18C08F30/02C08J3/12
Inventor J·C·博尔林J·A·特雷霍-奥赖利
Owner ROHM & HAAS CO
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