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

Highly functional polymer latex

A technology of polymer and water-containing emulsion, which is applied in the fields of coating, fiber treatment, textile and paper making, and can solve the problems of high cost and time-consuming

Inactive Publication Date: 2007-02-07
CELANESE INT CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the disclosed method of preparing the polymer is not only expensive but also time consuming

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

[0076] The reactor was charged with 2,831.38 g water, 42.2 g AEROSOL A102 (sulfosuccinate, Cytec) (31% solution), 9.53 g TERGITOL 15S5 (ethoxylated alcohol, Union Carbide), 45.47 g TERGITOL 15S40 ( Ethoxylated alcohol, UnionCarbide), (70% solution), 81.67g sodium ethylene sulfonate (25% solution), 10.89g ferric sulfate hexahydrate (1% solution), 10.89g VERSENE (tetrasodium ethylenediaminetetraacetate , Dow Chemical), 1.09 g sodium formaldehyde sulfoxylate, 0.35 g sodium acetate and 108.9 g vinyl acetate. The pH of the starting charge (without vinyl acetate) was adjusted to pH 4 with phosphoric acid. The reactor was then flushed with nitrogen and then ethylene and heated to 50°C with stirring, then pressurized to 800 psi ethylene. At an addition rate of 2 hours, the addition of tert-butyl hydroperoxide solution (395.18 g water and 81.65 g tert-butyl hydroperoxide) and buffered sodium formaldehyde sulfoxylate solution (396.75 g water, 73.02 g formaldehyde sulfoxylate) was start...

Embodiment 2

[0083] The reactor was charged with 2,896.04g water, 12.59g AEROSOL A102 (31% solution), 3.02g TERGITOL 15S5, 14.35g TERGITOL 15S40 (70% solution), 75.55g sodium ethylene sulfonate (25% solution), 10.07g six Ferric sulfate hydrate (1% solution), 10.07g VERSENE, 1.01g sodium formaldehyde sulfoxylate, 0.33g sodium acetate and 100.73g vinyl acetate. The pH of the starting charge (without vinyl acetate) was adjusted to pH 4 with phosphoric acid. The reactor was then purged with nitrogen and ethylene and stirred to 50°C, then pressurized to 800 psi ethylene. At an addition rate of 2 hours, the addition of tert-butyl hydroperoxide solution (337.97 g water and 69.83 g tert-butyl hydroperoxide) and buffered sodium formaldehyde sulfoxylate solution (337.97 g water, 69.18 g formaldehyde sulfoxylate) was started. sodium sulfate and 2.94 g sodium acetate). When the temperature rise indicated initiation, the jacket temperature was increased to 70° C., and the emulsified monomer mixture w...

Embodiment 3

[0089] The reactor was charged with 2,896.04 water, 8.81 g AEROSOL A102 (31% solution), 2.01 g TERGITOL 15S5, 9.57 g TERGITOL 15S40 (70% solution), 75.55 g sodium ethylene sulfonate (25% solution), 10.07 g sulfuric acid hexahydrate Iron (1% solution), 10.07g VERSENE, 1.01g sodium formaldehyde sulfoxylate, 0.33g sodium acetate and 100.73g vinyl acetate. The pH of the starting charge (without vinyl acetate) was adjusted to pH 4 with phosphoric acid. The reactor was then purged with nitrogen and ethylene and heated to 50°C with stirring, then pressurized to 800 psi ethylene. At an addition rate of 2 hours, the addition of tert-butyl hydroperoxide solution (323.46 g water and 66.83 g tert-butyl hydroperoxide) and buffered sodium formaldehyde sulfoxylate solution (323.46 g water, 59.52 g formaldehyde sulfoxylate) was started. sodium sulfate and 2.94 g sodium acetate). When the temperature rise indicated initiation, the jacket temperature was increased to 70° C., and the emulsifie...

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
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention is directed to an ethylene-vinyl acetate emulsion polymer having at least 55 percent by weight of ethylene, which is water-dispersible, yet non-dispersible in an aqueous solution containing 0.5 percent or more of an inorganic salt. The invention is also directed to salt sensitive emulsion polymers containing a water-dispersible polymer having a Tg of less than 25 DEG C, which are non-dispersible in aqueous solutions containing 0.5 weight percent or more of an inorganic salt. The invention is also directed to an ethylene / vinyl acetate emulsion polymer having at least 55 percent by weight of ethylene, and a process for producing said emulsion polymer.

Description

field of invention [0001] The present invention relates to high ethylene content ethylene-vinyl acetate (EVA) emulsions comprising water-dispersible copolymers which are non-dispersible in aqueous solutions containing 0.5% by weight or more of inorganic salts. The present invention also relates to ethylene-vinyl acetate emulsions containing at least 55% by weight of ethylene, and a process for preparing said high ethylene content EVA emulsions. The present invention also relates to emulsions comprising a water-dispersible polymer which is non-dispersible in an aqueous solution containing 0.5% by weight or more of an inorganic salt, wherein the Tg of the polymer is less than 25°C. Background of the invention [0002] Ethylene-vinyl acetate (EVA) polymers provide useful properties at relatively low cost in many industrial applications. Ethylene monomer is a low cost monomer, so as much ethylene as possible can be incorporated into the ethylene vinyl acetate polymer taking adv...

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 Patents(China)
IPC IPC(8): C08F2/26C08F210/02C08J3/00D06M15/227C09D123/08C08F218/08C08F2/24C08F255/02
CPCC08F255/026C08F210/02C08F218/08C08F2/24C08F228/00C08F230/02C08F220/40C08F220/56C08F220/20
Inventor D·R·威廉斯
Owner CELANESE INT CORP