Unlock instant, AI-driven research and patent intelligence for your innovation.

Stable waterborne polymer compositions containing poly (alkyleneimines)

A water-based polymer, alkylene imine technology, applied in the field of emulsion chemistry

Inactive Publication Date: 2001-04-04
EASTMAN CHEM CO
View PDF18 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite the health and safety benefits associated with transitioning from organic solventborne to waterborne compositions, waterborne coating compositions must meet or exceed the performance standards expected of solventborne compositions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Synthesis of Latex:

[0057] The structure of the reactor is a 4L jacketed kettle kept at 80°C with circulating water. The atmosphere above the reaction zone was inertized with nitrogen using deionized water. Add 1000g water, 3g sodium bicarbonate and 54.5g (1.5phm) Rhodacal A246L surfactant (a C 12，14 Sodium α-olefin sulfonate surfactant, available from Rhone-Poulenc as a 38.5% solution in water) and heated to 80°C. With 700g water, 10.9g (0.3 phm) Rhodacal A246L surfactant, 672g styrene, 476g butyl acrylate, 70g 2-hydroxyethyl methacrylate (HEMA), 140g acetoacetoxyethyl methacrylate (AAEM) and 84 g of sodium 2-acrylamido-2-methylpropanesulfonate (AMPS 2405 monomer, purchased from Lubrizol, 50% aqueous solution) to prepare an emulsion. Add 110 g of the above-mentioned emulsion to the reactor, and then add a solution of 2.7 g of sodium persulfate in 20 g of water. After 5 minutes, the remaining emulsion was added to the reactor over 2 hours. At the same time, a sol...

Embodiment 2-

[0062] Embodiment 2-comparative example

[0063] 100 g of a latex similar to that described in Example 1 was treated with the same proportion of PEI, but without the addition of Aerosol NPES 930P surfactant after polymerization. The pH of the latex was adjusted to 9.8, causing the mixture to gel within 10 minutes.

Embodiment 3

[0064] Example 3: Evaluation of various anionic surfactants

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
molecular weightaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

This invention provides waterborne polymer compositions stabilized against gelling due to the addition of poly(alkyleneimine) by post addition of certain anionic surfactants. The waterborne polymer compositions of the invention are useful in a variety of coating formulations such as, paints, inks, sealants, textile backcoatings, adhesives and the like. Methods of making stable waterborne polymer compositions are also disclosed.

Description

field of invention [0001] This invention relates to the field of emulsion chemistry. More specifically, the present invention relates to stable aqueous polymer compositions for use in various coating formulations. Background of the invention [0002] In more and more industrial fields, water-based coating compositions are continuously replacing traditional organic solvent-based coating compositions. For example, paints, inks, sealants and adhesives that were previously formulated with organic solvents are now formulated as water-based compositions. This reduces the potential for injury from exposure to volatile organic compounds (VOC's) typically contained in solvent-borne compositions. Although there are health and safety benefits associated with converting an organic solventborne composition to a waterborne composition, the waterborne coating composition must meet or exceed the performance standards expected of a solventborne composition. The need to meet or exceed such...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K5/00C09D5/02C09D201/00
CPCC09D5/024C08K5/36C08K5/51C08L79/00C09D201/06C09D7/63C09D7/65
Inventor P·W·雷诺兹D·A·斯科特
Owner EASTMAN CHEM CO