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Hydrophobic Modified polymer

A hydrophobic modification and polymer technology, applied in the direction of coatings, adhesives, etc., can solve problems such as insufficient hydrophobization

Inactive Publication Date: 2006-08-16
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of silane-hydrophobized polymer compositions is that these compositions work very well on silicate surfaces, but do not produce sufficient hydrophobization on calcium-containing or carbonate-containing surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0050] Experimental example 1 (comparative example):

[0051] 100 parts by weight of dispersion D1 are combined with 8 parts by weight of polyvinyl alcohol having a hydrolysis index of 140 or a degree of hydrolysis of 88 mol % and sprayed with a two-fluid nozzle (at 4 bar and 125° C.).

[0052] The dry powder was mixed with 15 parts by weight of a commercially available anti-caking agent based on calcium / magnesium carbonate and magnesium hydrogen silicate.

experiment example 1a

[0053] Experimental example 1a (comparative example):

[0054] Combine 100 parts by weight of dispersion D1 with 8 parts by weight of polyvinyl alcohol with a hydrolysis index of 140 or a degree of hydrolysis of 88 mol%, and 4 parts by weight of isooctyltriethoxysilane, and use a two-fluid nozzle to Spray (at 4 bar and 125° C.).

[0055] The dry powder was mixed with 15 parts by weight of a commercially available anti-caking agent based on calcium / magnesium carbonate and magnesium hydrogen silicate.

experiment example 1b

[0057] In addition to the components of Experimental Example 1a, 0.6 parts by weight of natural glycerides of mostly unsaturated fatty acids having mainly 12 to 18 carbon atoms were used.

[0058] The dry powder was mixed with 15 parts by weight of a commercially available anti-caking agent consisting of calcium / magnesium carbonate and magnesium hydrogen silicate.

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PUM

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Abstract

Hydrophobically modified polymer compositions contain at least one polymer based on one or more ethylenically unsaturated monomers, in the form of an aqueous polymer dispersions or water-redispersible polymer powder prepared therefrom, further containing, a) one or more silanes, polysilanes, oligosiloxanes, polysiloxanes, carbosilanes, polycarbosilanes, carbosiloxanes, polycarbosiloxanes, polysilylenedisiloxanes, and b) one or more fatty compounds from the group of the fatty acids having from 8 to 22 carbon atoms, their metal soaps, their amides, and their esters with monohydric alcohols having from 1 to 8 carbon atoms, with glycol, with polyglycol, with polyalkylene glycol, with glycerol, with mono-, di-, or triethanolamine, or with monosaccharides.

Description

technical field [0001] The present invention relates to hydrophobically modified polymers in the form of aqueous polymer dispersions and water-dispersible polymer powders. Background technique [0002] Aqueous dispersions and water-dispersible powders based on homopolymers or copolymers of ethylenically unsaturated monomers are known. They are used as adhesives in the construction sector, optionally in combination with water-setting adhesives such as cement. There are many examples in construction adhesives, plasters and plasters, mortars and paints. However, they can also be used as binders for coating compositions and adhesives and as textile binders. Addition of polymer dispersions or dispersion powders here is generally used to improve mechanical strength and adhesion. In some applications, especially in plaster or plaster or building adhesives, in addition to the improvement of adhesion, there are also requirements for reducing water absorption and waterproofing. To...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/00C09D123/00C09J123/00C08J3/22C08K5/00C08K5/101C08K5/5419C08L83/00
CPCC08K5/5419C08K5/101
Inventor 托马斯·巴斯特尔贝格尔赖因哈德·哈尔茨舍尔弗朗茨·约德尔鲍尔
Owner WACKER CHEM GMBH