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One-component organosilane modified polyether coating and preparation method thereof

A technology of silane-modified polyether and organosilane, which is applied in the field of coatings, can solve the problems of restricting the development of polyurethane waterproof coatings, difficulty in meeting the requirements of exposure, and difficulty in improving weather resistance, and achieves strong deformation adaptability, excellent weather resistance, good weather resistance

Active Publication Date: 2017-08-25
FOSHAN KESHUN BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solvent-based polyurethane waterproof coatings are generally difficult to improve weather resistance and meet the requirements of exposure. They need to be used as a protective layer and cannot be applied to applications that require exposure, such as exterior wall waterproofing, metal roof waterproofing and sealing, etc.
Moreover, solvent-based polyurethane waterproof coatings contain free TDI and other harmful substances to the human body, which limits its application in kitchen and bathroom waterproofing
Moreover, solvent-based polyurethane waterproof coatings have poor adhesion to some common substrates such as glass, PVC, etc.
These problems have undoubtedly restricted the development of polyurethane waterproof coatings.

Method used

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  • One-component organosilane modified polyether coating and preparation method thereof
  • One-component organosilane modified polyether coating and preparation method thereof
  • One-component organosilane modified polyether coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The one-component organic silane modified polyether coating of this embodiment is made up of the following mass percent: silane modified polyether 35%, nanometer calcium carbonate 10%, rutile type titanium dioxide 10%, heavy calcium 25%, Tinuvin-928 0.2%, Tinuvin-770 0.2%, Irganox-245 0.1%, Bayer 264 0.1%, plasticizer 10%, vinyltrimethoxysilane 0.5%, N-(β-aminoethyl)-γ-aminopropyl Trimethoxysilane 0.5%, drier 0.4%, ISOPAR-L 6%, ISOPAR-H 2%.

[0034] The silane-modified polyether described in the present embodiment is the S303H of Japan KANEKA company; The nano-calcium carbonate is the SP of Japan Takehara Company; The rutile type titanium dioxide is the R-706 of U.S. Dupont; Mesh heavy calcium (moisture content≤0.5%); The plasticizer is a difunctional polyether polyol with a molecular weight of 2000 on the market; The drier is U-220H (organic tin drier) ).

[0035] Its properties of the one-component organosilane modified polyether coating described in the present emb...

Embodiment 2

[0051] The one-component organosilane-modified polyether coating in this embodiment is composed of the following mass percentages: 20% silane-modified polyether a, 10% silane-modified polyether b, 15% nanometer calcium carbonate, 10% rutile titanium dioxide , heavy calcium 22%, Tinuvin-11300.1%, Tinuvin-326 0.2%, Tinuvin-770 0.1%, Tinuvin-292 0.2%, Irganox-245 0.3%, plasticizer 15%, vinyltrimethoxysilane 0.4%, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane 0.4%, drier 0.3%, ISOPAR-E 3%, ISOPAR-G 3%.

[0052] The silane-modified polyether a described in the present embodiment is the S303H of Japan KANEKA company; The silane-modified polyether b described in the present embodiment is the S203H of Japan KANEKA company; Described nano-calcium carbonate is the SP of Japan Takehara Company; Titanium dioxide is the R-706 of U.S. DuPont; the heavy calcium is 3000 mesh heavy calcium (without surface treatment, water content≤0.5%); the plasticizer is the difunctional polyether polyol of...

Embodiment 3

[0063] The one-component organosilane modified polyether coating of this embodiment is made up of the following mass percentage: silane modified polyether 25%, nanometer calcium carbonate 13%, rutile type titanium dioxide 15%, 1250 order talcum powder 28%, Tinuvin -11300.1%, Tinuvin-928 0.2%, Tinuvin-292 0.3%, Bayer 264 0.5%, plasticizer 5%, vinyltrimethoxysilane 0.2%, N-(β-aminoethyl)-γ-aminopropyl Trimethoxysilane 2%, drier 0.7%, ISOPAR-V 5%, Idemitsu LX 5%.

[0064] The silane-modified polyether described in this embodiment is S203H of Japan KANEKA Company; the nano-calcium carbonate is the SP of Japan Takehara Company; the titanium dioxide is R-706 of U.S. Dupont; Talc powder (moisture content ≤ 0.2%); the plasticizer is a trifunctional polyether polyol with a molecular weight of 5000 on the market; the drier is U-220H from Nitto Kasei.

[0065] Its properties of the one-component organosilane modified polyether coating described in the present embodiment are as follows: ...

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Abstract

The invention relates to a single-component organic silane modified polyether coating, which is composed of the following substances according to the total mass fraction of 100%: 25% to 45% of silane modified polyether, 10% to 15% of nano calcium carbonate, coloring 0% to 15% of additives, 20% to 30% of fillers, 0.2% to 1% of ultraviolet absorbers, 0.2% to 1% of ultraviolet stabilizers, 0.2% to 1% of antioxidants, 5% to 15% of plasticizers, 0.2% to 2% of water agent, 0.2% to 2% of coupling agent, 0.3% to 0.7% of drying agent and 5% to 10% of isoparaffin solvent. The invention also has very good adhesion to wet base surfaces, and is suitable for waterproofing of various base surfaces and various complex base surfaces; the construction environment is comfortable, and the weather resistance is good; the deformation adaptability of the base material is strong, and the mechanical properties are comparable to those of solvent-based single surfaces. The components of polyurethane waterproof coatings are basically the same; the storage stability is good.

Description

[0001] Technical field: [0002] The invention belongs to the field of coatings, and in particular relates to a single-component organosilane-modified polyether coating and a preparation method thereof. [0003] Background technique: [0004] At present, the widely used waterproof coatings in my country mainly include solvent-based polyurethane waterproof coatings, polymer cement waterproof coatings (JS), silicone-modified acrylic waterproof coatings, etc., among which polyurethane waterproof coatings are the most widely used. Solvent-based polyurethane waterproof coating is a prepolymer containing isocyanate group formed by addition polymerization of isocyanate and polyether, together with catalyst, auxiliary agent, filler, solvent, etc., and processed by mixing and other processes. One-component or two-component polyurethane waterproof coating. This type of coating is a reaction-curing (moisture-curing) coating, which has the characteristics of high strength and high elongat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D171/00C09D7/12
Inventor 陈伟忠杨小育龚兴宇游启明邓健
Owner FOSHAN KESHUN BUILDING MATERIAL CO LTD
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