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Emulsions of Aminosilicones and Silicates

A technology of aminoalkyl and polyorganosiloxane, which is applied in transportation and packaging, chemical instruments and methods, coatings, etc., and can solve problems such as insufficient water resistance

Active Publication Date: 2022-04-29
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of these auxiliaries is that the water resistance is still not good enough due to the rather high hydrophilicity caused by two or more diol groups and the rather high hydrophilicity of the hydroalcoholic mixture

Method used

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  • Emulsions of Aminosilicones and Silicates
  • Emulsions of Aminosilicones and Silicates
  • Emulsions of Aminosilicones and Silicates

Examples

Experimental program
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Embodiment

[0135] To demonstrate the advantages of oil-in-water emulsions with polysilicate compounds using organic solvents, they were compared with formulations with polysilicate compounds using organic solvents diethylene glycol butyl ether or with MQ methyl silicone Resin formulations (such as the prior art) were compared.

[0136]The aminoalkyl group-containing polydimethylsiloxane (P-1) used in the test examples is a mixed hydroxyl / methoxydimethylsilyl terminated copolymer composed of aminoethyl It is composed of aminopropylmethylsiloxane and dimethylsiloxane units, has a viscosity of 982 mPas (at 25° C. and a shear rate of 10 1 / s), and an amine value of 0.287 mmol / g.

[0137] The polydimethylsiloxane (P-2) containing aminoalkyl groups used in the test examples is a mixed hydroxy- / methoxydimethylsilyl-trimethylsilyl blocked terminal copolymer (68mol% SiMe 3 End group, 29mol% SiMe 2 OH end groups, 3mol% SiMe 2 OMe end group, via 29 determined by Si-NMR) consisting of aminoethyl...

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Abstract

The present invention relates to an oil-in-water emulsion comprising (i) 100 parts by weight of the aminoalkyl group-containing polyorganosiloxane (P) which is liquid at 20° C. according to claim 1, (ii) protons emulsifying agent, (iii) the silicate compound described in claim 1 of 1-80 parts by weight, (iv) water, (v) no more than 5 parts by weight of emulsifier, and (vi) at least 5 parts by weight of organic Solvent, selected from the monohydric alcohol R of general formula IX 11 ‑OH(IX) and the glycol monoether R of general formula X 12 O‑R 13 -OR 14 (X), where R 11 , R 12 , R 13 and R 14 As defined in claim 1 , with the proviso that the emulsion comprises no more than 10 parts by weight of a di-, tri- or oligoglycol ether as claimed in claim 1 . The invention also relates to a method of treating a substrate with said oil-in-water emulsion.

Description

technical field [0001] The present invention relates to oil-in-water emulsions of polydimethylsiloxanes and silicates containing aminoalkyl groups, and methods of treating substrates therewith. Background technique [0002] Emulsions based on aminosilicones and silicates for repelling aqueous soils from porous or non-porous, absorbent or non-absorbent substrates. [0003] DE 10 2014 216 380 describes oil-in-water emulsions of aminosilicones in combination with silicates which can be used for the hydrophobization of porous or non-porous, absorbent or non-absorbent substrates. [0004] The formulations described in DE 10 2014 216 380 use oligomeric glycol ethers such as diethylene glycol butyl ether as auxiliary agents to increase the storage stability. The disadvantage of these auxiliaries is that, due to the relatively high hydrophilicity caused by two or more diol groups and the relatively high hydrophilicity of the hydroalcoholic mixture, the water resistance is still not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08
CPCC08L83/08C08G77/26C08G77/02C09D183/08C08L83/00C09D5/022B01F23/41B01F23/4145
Inventor 克里斯托夫·布雷姆弗朗茨·维默尔
Owner WACKER CHEM GMBH