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Aqueous urethane dispersants

A technology of polyurethane and polyurethane polymers, applied in the field of paint and ink, dispersion containing granular solids, and abrasives

Inactive Publication Date: 2005-05-11
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no suggestion that these polyurethane polymers can be used to disperse pigments in aqueous media

Method used

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  • Aqueous urethane dispersants
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0167] α,α-Dihydroxy functional PEG

[0168]

[0169] 2,4-Toluene diisocyanate (34.8 parts) was added to a reaction flask and stirred at 50°C under nitrogen. Polyethylene glycol monomethyl ether (MeOPEG 750, 150 parts, purchased from Aldrich Company) was preheated to 50° C. and added to the isocyanate under stirring for 1 hour. The reaction was continued at 50°C for 30 minutes to form an isocyanate terminated polyether. After cooling to 35°C, diethanolamine (18.1 parts) was added and the reaction was stirred at 35°C under nitrogen for 1 hour. This is Intermediate 1.

Embodiment B

[0171] α,α-Amino hydroxyl functional polyethers

[0172]

[0173] Polyethylene glycol monomethyl ether amine (199.3 parts, Jeffamine M1000, purchased from Huntsman Company) was stirred at 70 ° C in the presence of air, and 2-hydroxyethyl acrylate (20.7 parts) and butylated hydroxytoluene (0.021 parts) Add them together. The reaction was continued in air at 70°C with stirring for 6 hours. This is Intermediate 2.

Embodiment C

[0175]

[0176]Polyethylene glycol methyl ether acrylate (portion 454) (200 parts), ethanolamine (25.6 parts) and butylated hydroxytoluene (0.054 parts) were added to a stirred glass reaction vessel at about 25°C. An exothermic reaction then raised the temperature to 40°C after about 5 minutes. The resulting mixture was heated at 70°C with stirring for 8 hours to give the product as a pale yellow liquid. This is Intermediate 3.

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PUM

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Abstract

A polyurethane polymer containing 35 to 90 wt% of a poly(C2-4 alkylene oxide) based on the total weight of the polymer, wherein not less than 60% of the poly(C2-4 alkylene oxide) is poly(C2-4 alkylene oxide). Ethylene oxide, and wherein at least 5% of the poly(C2-4 alkylene oxide), based on the total weight of the polymer, is bound to the side chain, and when the polyurethane contains 35 to 45% by weight of poly(C2-4 alkylene oxide) Oxygen), for example, by using bis(hydroxymethyl)propionic acid, cyclohexanedimethanol, polypropylene glycol (1000), N-methylpyrrolidone, and a compound available from 2,4-toluene diisocyanate, methoxypolyethylene When a polymer is produced by reacting α,α-dihydroxypolyethylene glycol obtained by diol (750) and diethanolamine, it contains 10 to 180 milliequivalents (meq) of acid groups per 100g of polymer.

Description

technical field [0001] The present invention relates to polyurethane dispersions, and also to dispersions, millbases, paints and inks containing particulate solids dispersed in an aqueous medium, including those used in non-contact printing processes such as "drop-on-demand" printing processes ink. Background technique [0002] There are numerous patent specifications disclosing water-soluble or water-dispersible polyurethane polymers containing polyethylene oxide segments which may be present in side or terminal chains attached to the polyurethane backbone. Typically, these patent specifications relate to the stabilization of polymers in aqueous media and also to the use of such polymers in the coatings industry. An example of such a description is US 4,764,533, which discloses a water-soluble or water-dispersible polyurethane containing about 0.5 to 30 wt% present in side chains or terminal polyether chains based on the total weight of the polyurethane The oxirane unit a...

Claims

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Application Information

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IPC IPC(8): B41J2/01B41M5/00C08G18/08C08G18/38C08G18/48C08G18/66C09C1/48C09D7/12C09D11/00C09D175/08C09D201/00C09K23/00
CPCC08G18/0823C08G18/4833C09K23/16
Inventor S·N·理查兹
Owner THE LUBRIZOL CORP
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