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Single-component polyurea modified polyurethane waterproof coating and a preparing method thereof

A polyurethane waterproof, one-component technology, applied in the field of polyurethane waterproof coatings, can solve problems such as foaming and low viscosity, and achieve the effect of solving low viscosity, low ketone taste, and good construction experience

Pending Publication Date: 2019-01-01
德州科顺建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, this patent provides a one-component polyurea modified polyurethane waterproof coating to overcome at least one of the above-mentioned deficiencies in the prior art, in order to solve the problem of foaming after construction and curing in the traditional single-component polyurethane waterproof coating. Problems and environmental pollution problems containing organic solvents, while maintaining low viscosity, easy construction, etc., through the self-made latent curing agent, carefully selected low-odor raw materials, without adding organic solvents, environmentally friendly and non-toxic, the paint film is dense and non-foaming after curing , improve waterproof performance and construction efficiency

Method used

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  • Single-component polyurea modified polyurethane waterproof coating and a preparing method thereof
  • Single-component polyurea modified polyurethane waterproof coating and a preparing method thereof

Examples

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Embodiment 1

[0032] A one-component polyurea modified polyurethane waterproof coating, comprising the following components in parts by weight: 18 parts of polyether diol 2000D, 5 parts of polyether diol 1000D, 10 parts of polyether triol 6000D, chlorine 25 parts of paraffin wax, 32 parts of talc, 2 parts of titanium dioxide, 0.1 part of 1,4-butanediol, 7.6 parts of diphenylmethane diisocyanate, 2 parts of self-made latent curing agent, 0.1 part of dibutyltin dilaurate.

[0033] The preparation method of the above-mentioned self-made latent curing agent is: calculated according to the total mass fraction of 100%, it is composed of the following substances: 65% of 3-penten-2-one, 35% of 2-methylpentamethylenediamine; it is prepared by the following method: Under the protection of nitrogen, add the measured 3-penten-2-one into the closed dispersion tank, add the measured 2-methylpentamethylenediamine dropwise under stirring, and control the temperature below 40°C for 30 minutes; then raise the...

Embodiment 2

[0040] A one-component polyurea-modified polyurethane waterproof coating, comprising the following components in parts by weight: 22 parts of PPC2000D, 28 parts of trioctyl citrate, 34 parts of talcum powder, 2 parts of titanium dioxide, and 0.3 parts of trimethylolpropane 5.6 parts of hexamethylene diisocyanate, 3.5 parts of self-made latent curing agent, and 0.2 parts of stannous octoate.

[0041] The preparation method of the above-mentioned self-made latent curing agent is: calculated according to the total mass fraction of 100%, it is composed of the following substances: 69% of 3-hydroxy-2-butanone, 31% of p-phenylenediamine; it is prepared according to the following method: in the presence of nitrogen protection Add the measured 3-hydroxy-2-butanone into the closed dispersion tank, add the measured p-phenylenediamine dropwise under stirring, control the temperature below 40°C for 30 minutes; then raise the temperature to 120°C and reflux to separate the water ; When the...

Embodiment 3

[0048] A one-component polyurea modified polyurethane waterproof coating, comprising the following components in parts by weight: 26 parts of PTMEG2000, 20 parts of trioctyl phosphate, 42 parts of talcum powder, 2 parts of titanium dioxide, 1,6-hexanediol 0.5 parts, 2 parts of 4,4'-dicyclohexylmethane diisocyanate, 3 parts of self-made latent curing agent, 0.1 part of lead isooctanoate.

[0049] The preparation method of the above-mentioned self-made latent curing agent is: calculated according to the total mass fraction of 100%, it is composed of the following substances: 75% of methyl nonyl ketone, 25% of diethyltoluenediamine; it is prepared according to the following method: under the protection of nitrogen , add the measured methyl nonyl ketone into the closed dispersion tank, add the measured diethyltoluenediamine dropwise under stirring, control the temperature below 40°C and react for 30 minutes; then raise the temperature to 120°C and reflux to separate the water; Com...

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Abstract

The invention relates to the field of polyurethane waterproof coating and discloses single-component polyurea modified polyurethane waterproof coating. The coating includes, by weight, 22-33 parts ofpolyether polyol, 5.6-7.6 parts of diisocyanate, 20-28 parts of a plasticizer, 34-44 parts of a pigment filler, 0.1-0.5 part of a chain extender, 0.1-0.2 part of a catalyst, and 2-3.5 parts of a self-prepared latent curing agent. A preparing method of the coating is further provided. The method includes uniformly dispersing the polyether polyol, the plasticizer, the pigment filler and the chain extender, then dewatering the mixture under vacuum, then adding the diisocyanate, stirring and reacting the mixture, then adding the self-prepared latent curing agent, stirring and reacting the mixture,finally adding the catalyst, fully stirring the mixture, and discharging a material under nitrogen protection. The self-prepared latent curing agent is adopted so that the coating is free of organicsolvent, low in viscosity and excellent in physical performance, and overcomes a problem that oil returning and insufficient tensile strength are caused by application of a high amount of plasticizers.

Description

technical field [0001] This patent relates to the field of polyurethane waterproof coatings, more specifically, to a one-component polyurea modified polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Compared with the two-component polyurethane waterproof coating, the one-component polyurethane waterproof coating has no measurement error during construction, and it can be used immediately after opening the barrel, and the construction is easy. At the same time, the single-component polyurethane waterproof coating has stable performance, convenient use and wide application. Therefore, in recent years, the amount of use has been increasing, and it has become more and more recognized by users, and it has become the development direction of polyurethane waterproof coatings. [0003] At present, the one-component polyurethane waterproof coatings are mainly moisture cross-linking curing and latent curing. Moisture crosslinking curing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02C09D11/06C09D11/08C09D11/04C08G18/66C08G18/48C08G18/32
CPCC08G18/3206C08G18/4812C08G18/4825C08G18/4829C08G18/66C08K2003/2241C09D11/04C09D11/06C09D11/08C09D175/02C08L91/06C08K3/34C08K3/22C08K5/11C08K5/521
Inventor 林焕章龚兴宇陈立义梁水清吴海洋
Owner 德州科顺建筑材料有限公司
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