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Environment-friendly poly(propylene carbonate) type polyurethane floor coating and preparation method thereof

A polypropylene carbonate and polypropylene carbonate glycol technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of unseen floor coatings research reports and industrial application examples, toluene diisocyanate is volatile, Skin and eyes permanent loss and other problems, to achieve good cost and performance advantages, broad market application prospects, low cost

Active Publication Date: 2011-06-15
HUIZHOU DAYAWAN DAZHI FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are no research reports and industrial application examples based on polypropylene carbonate diol floor coatings
[0006] In addition, for a long time, polyurethane floor coatings are mostly made of toluene diisocyanate, which is easy to volatilize. After long-term exposure, it will cause liver lesions, and contact with liquids can cause permanent damage to the skin and eyes. According to the standard TJ36-79 of the Ministry of Health, Its maximum allowable concentration in the workshop is 0.2mg / m 3

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An environment-friendly polypropylene carbonate type polyurethane floor coating, which is composed of component A and component B; the composition of component A is in parts by weight: 20-70 parts of diisocyanate, polypropylene carbonate diol 30-80 parts; the composition of component B is: 30-50 parts of polypropylene carbonate, 5-25 parts of processing aids, 40-70 parts of fillers, 0.1-2 parts of pigments, and 0.01 parts of ultraviolet light absorbing agent in parts by weight. -0.1 part, 0.01-0.1 part of anti-aging agent, 0.05-2 part of catalyst, wherein the weight ratio of component A to component B is 1:1-10.

[0034] The diisocyanate is one or a mixture of diphenylmethane diisocyanate (MDI), carbodiimide modified (MDI), and 1,5-naphthalene diisocyanate (NDI).

[0035] The polypropylene carbonate diol is formed by copolymerizing carbon dioxide with propylene oxide under the action of an initiator and a catalyst, with a molecular weight of 1000-8000, preferably 1500-4...

Embodiment 2

[0043] 1. Preparation of A component

[0044] 1) Add 78.3 parts by weight of polypropylene carbonate diol with a molecular weight of 2000 into the reaction kettle; start stirring after the addition, raise the temperature to 90°C, vacuum dehydrate for 1 hour, and cool down to 25°C.

[0045] 2) Add 21.7 parts by weight of diphenylmethane diisocyanate, keep warm for 30 minutes, slowly raise the temperature to 75-85°C under stirring condition, react at this temperature for 1.5 hours, and cool down to 25°C.

[0046] Two, the preparation of component B

[0047] 1) According to the order of ingredients: 30 parts by weight of polypropylene carbonate diol with a molecular weight of 2000, 15 parts of chlorinated paraffin, 53.7 parts of filler, 0.8 part of pigment, 0.1 part of ultraviolet light absorber, anti Put 0.1 part of aging agent and 0.3 part of zinc isooctanoate into the batching kettle and stir with a stirrer for 5-10 minutes.

[0048] 2) Use a colloid mill to grind the prepar...

Embodiment 3

[0054] 1. Preparation of A component

[0055] 1. Add 75.5 parts by weight of polypropylene carbonate diol with a molecular weight of 2000 into the reactor; after the addition, start stirring, raise the temperature to 90°C, vacuum dehydrate for 1 hour, and cool down to 20°C.

[0056] 2) Add 24.5 parts by weight of diphenylmethane diisocyanate, keep it warm for 30 minutes, slowly raise the temperature to 75-85°C with stirring, react at this temperature for 1.5 hours, and cool down to 40°C.

[0057] Two, the preparation of component B

[0058] 1) According to the order of ingredients: 55 parts by weight of polypropylene carbonate with a molecular weight of 2000, 15 parts of chlorinated paraffin, 29 parts of filler, 0.8 part of pigment, 0.1 part of ultraviolet light absorber, anti-aging agent 0.1 part, 0.3 part of zinc isooctanoate, put into the batching kettle, and stir with a stirrer for 5-10 minutes.

[0059] 2) Use a colloid mill to grind the prepared material to a particle ...

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Abstract

The invention discloses an environment-friendly poly(propylene carbonate) type polyurethane floor coating which comprises an A component and a B component, wherein the A component comprises the following components in parts by weight: 20-70 parts of diisocyanate and 30-80 parts of poly(carbonate propylene) diol; the B component comprises the following components in parts by weight: 30-50 parts ofpoly(carbonate propylene), 5-25 parts of processing aids, 40-70 parts of filler, 0.1-2 parts of pigments, 0.01-0.1 part of ultraviolet absorber, 0.01-0.1 part of anti-aging agent and 0.05-2 parts of catalyst; and the weight ratio of the A component to the B component is 1: 1-10. The invention further discloses a preparation method of the floor coating. Due to the adoption of non-volatile diphenylmethane diisocyanate for replacing toluene diisocyanate and hexamethylene diisocyanate, the requirements of being non-toxic and harmless can be realized; due to the adoption of the poly(carbonate propylene) for replacing polyether, strength, abrasion resistance, scratch resistance and weather resistance of a product can be further improved; and the poly(carbonate propylene) diol can be prepared byusing greenhouse gas-carbon dioxide as raw material, and the cost is low.

Description

[0001] technical field [0002] The invention relates to a floor coating, in particular to an environment-friendly polypropylene carbonate type polyurethane floor coating; the invention also relates to a preparation method of the coating, which belongs to the field of floor coatings. Background technique [0003] The track and field track, basketball court, volleyball court, badminton court, and tennis court of modern sports fields, factory floors, restaurants, airports, etc. that require high cleanliness often use polyurethane floor coatings. Polyurethane floor coatings are elastic and suitable for sports. Excellent safety performance, anti-slip, good pressure resistance, good impact resistance, and not affected by climate conditions, etc., are very popular among the public. [0004] According to different raw materials, polyurethane materials can be divided into polyester type and polyether type. Polyester polyurethane molecules contain a large number of ester bonds, with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08G18/76C08G18/44C08G64/34
Inventor 蔡志华
Owner HUIZHOU DAYAWAN DAZHI FINE CHEM