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Rapid curing, waterproof, high and low temperature resistance, low voc polyurethane coating

A polyurethane coating, high and low temperature resistant technology, applied in the direction of polyurea/polyurethane coating, coating, etc., can solve problems such as not suitable for normal temperature curing operation, not having waterproof properties, etc.

Active Publication Date: 2019-05-24
付启兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, CN1350018A discloses a new type of polyurethane coating based on IPDI and HDI. However, this polyurethane coating is a solid powder coating with a curing temperature of 150-220°C, which is not suitable for normal temperature curing operations. In addition, the coating does not have waterproof properties. characteristic

Method used

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  • Rapid curing, waterproof, high and low temperature resistance, low voc polyurethane coating
  • Rapid curing, waterproof, high and low temperature resistance, low voc polyurethane coating
  • Rapid curing, waterproof, high and low temperature resistance, low voc polyurethane coating

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Embodiment approach

[0042] As an embodiment of the present invention, the preparation method of the polyether polyol can adopt the preparation method known to those skilled in the art, and the preparation of the polyether polyol is mainly prepared by the principle of cationic polymerization. In the present invention, the preferred initiator is a mixture of pentaerythritol and formula (1) in a weight ratio of 1:0.2, the comonomers are tetrahydrofuran and propylene oxide, and boron trifluoride ether complex is used as a catalyst. Concrete preparation process is as follows:

[0043] Mix monomer tetrahydrofuran, pentaerythritol and formula (1), under the catalyst boron trifluoride etherate complex, cool to -5°C in an ice-salt bath, slowly add propylene oxide under stirring, and carry out polymerization; the polymerized Polyether polyols are refined.

[0044] refined:

[0045] During the preparation of tetrahydrofuran-cyclic ether copolyether polyol by cationic ring-opening polymerization, due to th...

Embodiment approach 1

[0119] Embodiment 1: A rapidly curing, waterproof, high and low temperature resistant, low VOC polyurethane coating, in parts by weight, its preparation raw materials include:

[0120]

Embodiment approach 2

[0121] Embodiment 2: The rapidly curing, waterproof, high and low temperature resistant, low VOC polyurethane coating as described in Embodiment 1, in parts by weight, its preparation raw materials include:

[0122]

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PUM

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Abstract

The invention relates to a polyurethane coating, and particularly relates to a polyurethane coating with waterproofing, reinforcing and heat-insulating properties. Preparation raw materials of the polyurethane coating comprises 80 to 100 parts of polyether glycol, 15 to 30 parts of filler, 0.1 to 0.6 part of foam stabilizer, 0.4 to 1 part of flatting agent, 5 to 10 parts of mill base, 0.01 to 0.03 part of catalyst and 78 to 110 parts of curing agent.

Description

technical field [0001] The invention relates to a polyurethane coating, in particular to a polyurethane coating with waterproof, reinforcement and thermal insulation properties. technical background [0002] Polyurethane (polyurea) is an elastomer material produced by the reaction of isocyanate components and amino compound components. Traditional polyurethane waterproof coatings use aromatic isocyanate compounds (such as MDI, TDI, etc.) Decorative effect, so it is difficult to meet the requirements of outdoor direct exposure. Due to insufficient performance, the application of traditional polyurethane waterproof coatings in daily life is particularly limited. [0003] In the prior art, there have been many methods trying to improve the weather resistance and mechanical properties of polyurethane coatings. For example, CN1350018A discloses a new type of polyurethane coating based on IPDI and HDI. However, this polyurethane coating is a solid powder coating with a curing t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/61C09D7/62C08G18/48C08G18/66
CPCC08G18/4854C08G18/6685C08G18/6696C08K3/26C08K3/32C08K7/24C08K9/04C08K9/06C08K2003/265C08L2201/08C09D7/61C09D7/62C09D7/70C09D175/08
Inventor 付启兴唐静付水发
Owner 付启兴