Aqueous siliconiting polymer emulsion as well as preparation method and use thereof

A polymer emulsion and silane compound technology, applied in the direction of chemical instruments and methods, applications, lubricating compositions, etc., can solve problems such as not wanting to add inorganic particles

Inactive Publication Date: 2008-07-30
汉高股份两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some silylated polymers do not want to add inorganic p

Method used

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  • Aqueous siliconiting polymer emulsion as well as preparation method and use thereof
  • Aqueous siliconiting polymer emulsion as well as preparation method and use thereof
  • Aqueous siliconiting polymer emulsion as well as preparation method and use thereof

Examples

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preparation example Construction

[0073] Preparation method of aqueous silylated polymer emulsion

[0074] The invention uses a specific silane compound to prepare a stable water-based silylated polymer emulsion, which can be prepared in various ways, and the process is simple, flexible and diverse, and easy to operate.

[0075] In one embodiment A of the preparation method of the silylated polymer emulsion of the present invention (abbreviated herein as "simultaneous addition of silane method"), the method comprises the following steps (see Figure 4 ):

[0076] (1) blending of silylated polymer, optional emulsifier, and optional emulsification aid to form component AI;

[0077] (2) Optionally, mixing silane compound, water and optional nano silicon dioxide to form component AII;

[0078] (3) under agitation, add the component AII obtained in the step (2) to the component AI obtained in the step (1), or add the silane compound, water and non-essential nano-silicon dioxide respectively synchronously, after c...

Embodiment 1

[0135] Aqueous Silylated Polymer Emulsion Formulation 1 (Method B)

[0136] Composition Amount (g)

[0137] Vinyltris(β-methoxyethoxy)silane 7.0

[0138] Vinyldiethoxysilane-terminated polydimethylsiloxane 33.0

[0139] water 57.0

[0140] Ammonium Lauryl Polyoxyethylene(2) Ether Sulfate 2.0

[0141] Cetyl polyoxyethylene (30) ether 1.0

[0142] Polyoxyethylene (5) sorbitan monooleate 0.5

[0143] In a high-speed dispersion kettle, add 33.0 grams of vinyldiethoxysilane-terminated polydimethylsiloxane (weight average molecular weight 12,000, see U.S. Patent No. 3,971,751. The silane described in this example and the following examples Capping means capping with the silane at both ends of the polymer chain), 7.0 grams of vinyltris(β-methoxyethoxy)silane, 2.0 grams of lauryl polyoxyethylene ether (2) sulfuric acid Ammonium, 1.0 gram of cetyl polyoxyethylene (30) ether, 0.5 gram of polyoxyethylene (5) sorbitan monooleate, stirred at 2000rpm rotating speed at room temperature...

Embodiment 2

[0146] Aqueous Silylated Polymer Emulsion Formulation 2 (Method B)

[0147] Composition Amount (g)

[0148] Isobutyltriethoxysilane 10.0

[0149] 50% by weight nano silica hydrosol 16.0

[0150] Triethoxysilane-terminated polydimethylsiloxane 59.0

[0151] Sodium Lauryl Sulfate 0.5

[0152] Rhodia CO436 0.5

[0153] Rhodia CA897 0.5

[0154] water 14.0

[0155] 10% by weight hydrochloric acid to pH=8

[0156] In the high-speed dispersion kettle, add 59.0 grams of triethoxysilane-terminated polydimethylsiloxane (weight average molecular weight 60000, Henkel AG, Dusseldorf, Germany, see U.S. Patent No.5,300,608 ), 10.0 grams of isobutyltriethoxysilane, 0.5 grams of sodium lauryl sulfate, 0.5 grams of Rhodia CO436 (anionic surfactant, polyethylene oxide (4) alkylphenol ether sulfate, Rhodia Corporation) and 0.5 Gram Rhodia CA897 (nonionic surfactant, polyoxyethylene (40) nonylphenol ether, Rhodia company), at room temperature 2000rpm rotating speed stirs 10 minutes and mi...

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Abstract

The invention relates to aqueous silanized polymer emulsion and the preparation method and the application thereof. The emulsion of the invention contains a silanized polymer, a hydrolysable silanized compound, water, non-essential emulsifier and non-essential nano-silicon dioxide. By adopting the preparation method of the invention, stable aqueous silanized polymer emulsion can be prepared, the prepared aqueous silanized polymer emulsion has the solid content of smaller than or equal to 85 weight percent, especially, prepared polyorganosiloxane emulsion has the solid content of smaller than or equal to 75 weight percent, and the particle diameter of smaller than 3 micrometers, and can be laid stably at the room temperature. An elastomer can be formed through cross linking after water in the emulsion is volatilized. During the operation, the emulsion can be directly diluted through the water, and can be used for preparing coating, adhesive, sealant, printing ink, release agent, skin food, cleansing agent and so on.

Description

technical field [0001] The present invention relates to a stable silylated polymer emulsion. More specifically, the present invention relates to an aqueous silylated polymer emulsion comprising a silylated polymer; water; a hydrolyzable silane compound; optionally nanosilica; and optionally an emulsifier. The invention also relates to the preparation method and application of the aqueous silylated polymer emulsion. The emulsion of the present invention can be used as a raw material in the fields of coatings, adhesives, sealants, inks, release agents, skin care products, cleaning agents and the like. Background technique [0002] Silanized polymers, such as polymers containing silicon alkoxy groups at chain ends and / or side chains, can react with water in the air to self-crosslink and cure or react with curing agents to obtain Cross-linked polymers, which have excellent properties, are widely used in adhesives, sealants, coatings, inks, skin care products, cleaning agents a...

Claims

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Application Information

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IPC IPC(8): C08G77/14C08G77/06C08J3/03C09D183/04C09D11/10C09J183/04C09K3/10C10M107/50A61K8/89C11D3/37C10N40/36
CPCC09D143/04C08K5/544C09D183/04C09J143/04
Inventor 武利民游波黄煌张扬张宜荣张勇
Owner 汉高股份两合公司
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