The most complete waterborne wood lacquer identification buy sunflower book

January 15 23:15:20, 2019

How do consumers identify and select waterborne wood lacquer? First of all, we must understand what is waterborne wood lacquer. Waterborne wood lacquer is woodware coated with water as diluent and no organic solvent. It does not contain benzene, toluene, xylene, formaldehyde, free TDI toxic heavy metal, non-toxic and non-irritating odor, harmless to the human body, and does not pollute the environment. The paint film is full, crystal clear, good flexibility and has the characteristics of water resistance, wear resistance, aging resistance, yellowing resistance, fast drying, easy to use and so on. During the construction process, the painter will not produce symptoms such as dizziness, cough, nausea, etc., and there will be no potential harm to consumers when using it.
Second, understand the classification of waterborne wood coatings on the market. At present, there are mainly water-based wood lacquers with acrylic acid as the main component, water-based wood lacquers with the composition of acrylic acid and polyurethane as main components, and 100% water-borne polyurethane wood lacquers. Among them, ordinary acrylic type waterborne wood lacquers, due to the technical problems of their own products, cannot break through the high VOC content problem and are gradually eliminated by the market; while acrylic and polyurethane composites are the main components of waterborne wood lacquer, In addition to adhering to the characteristics of acrylic paints, it also features increased abrasion resistance and chemical resistance. It has good hardness, fast drying, wear resistance, good chemical resistance, low degree of yellowing, and moderate cost, and is suitable for ordinary home users. Use; 100% polyurethane waterborne wood lacquer, its products are advanced products in waterborne paint.
It is mainly divided into single and double components. It is characterized by excellent wear resistance, excellent anti-yellowing performance, high hardness, good film-forming properties, and high glossiness of the product. It is suitable for home luxury decoration, villa outdoor decoration, hotels and other places. .
Third, how to identify waterborne wood paint?
(1) From the appearance of the product, water-based wood paints are generally marked with water-based or water-soluble words, the English mark is water-based; and in the instructions for use of the product, the words that can be diluted with water can be marked directly. Counterfeit waterborne wood coatings cannot be diluted with fresh water due to the addition of solvent components.
(2) From the color of the product, according to the production process of waterborne wood lacquer, general waterborne wood lacquer is produced by polymer modified emulsion technology or waterborne polyurethane dispersion technology. Water-based wood lacquer that uses a composition of acrylic and polyurethane as the main component, this product is generally light white or translucent; and 100% polyurethane water-based wood lacquer, which is generally translucent yellowish.
(3) From the smell of the product, no peculiar smell is the most obvious feature of the waterborne wood lacquer. After the waterborne wood lacquer is opened, the odor emitted from the waterborne lacquer is very small and slightly oily. Counterfeit waterborne wood lacquers have strong irritating solvent tastes, and expired waterborne wood lacquers have a more sour odor.
(4) From the product test report, the formal waterborne wood lacquer products on the general market must be sampled and tested by an authoritative testing agency to determine whether the VOC content of their products actually meets the requirements of national mandatory standards before they are listed. Therefore, when consumers purchase waterborne wood lacquer, they may request the manufacturer or distributor to provide a product inspection report with a CMA qualified testing agency. Counterfeit waterborne wood coatings cannot provide authoritative test reports at all.
(5) From product certification, at present, the most authoritative product environmental certification in China is the certification of China's environmental labeling products. In the market, the products produced by strong waterborne wood paint manufacturers have passed the environmental labeling product certification. Waterbase Waterborne Wood Coatings has achieved China Environmental Labeling Product Certification.
I believe that through the above introduction, consumers have a basic understanding of how to choose, identify, and purchase waterborne wood coatings. In addition, for the waterborne wood lacquer industry, under the rapidly developing market environment, only by formulating and improving product standards and industry standards as soon as possible can it truly protect the legitimate rights and interests of consumers before it can really promote the waterborne wood lacquer industry. Forward development
With the continuous development of society, peopleâ€™s living standards have greatly improved. The most obvious one is the demand of people for the living environment, which is mainly reflected in the increasing degree of attention to the choice of paint materials for interior decoration when people carry out home decoration. With the increasing awareness of environmental health protection of consumers, the proportion of water-based wood lacquers used in interior decoration has become higher and higher. At present, the market share of domestic waterborne wood lacquer is gradually expanding, and the market competition is also becoming increasingly fierce. Various kinds of statements by various manufacturers in advertising have emerged one after another. However, as the waterborne wood coating industry is a developing coating industry, relevant detailed national standards, product standards, and industry standards have not yet been perfected. Among them, some unscrupulous manufacturers are driving counterfeit waterborne wood coatings driven by interests. The situation of shoddy and fishy fish is very serious, and its behavior directly harms the rights and interests of consumers. As the 3.15 consumer rights day approaches, we are more concerned about the quality of waterborne wood coatings.
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Hydroxypropyl Beta Cyclodextrin/Hydroxypropyl-beta-cyclodextrin is white powder, with good solubility in water, it can dissolve in 50% ethanol and methanol. Hydroxypropy-beta-cyclodextrin(hydroxypropyl betadex) has a certain relative hygroscopicity, but its relative surface activity and hemolytic activity is lower. Hydroxypropy-beta-cyclodextrin has no irritation to muscle, it is one kind of ideal injection solubilization agent and pharmaceutical excipient.

The introduction of hydroxypropyl breaks the molecular inner ring hydrogen bond of beta-cyclodextrin, it overcomes the major shortcoming of poor water solubility of beta-cyclodextrin. (2-hydroxypropyl)-beta-cyclodextrin is one of cyclodextrin derivatives with most in-depth and widest application, it is mainly used in food, pharmaceutical and cosmetics industries.

Product name : Hydroxypropy-Beta-Cyclodextrin

Product No. : HP-Î²-CD

CAS No. : 128446-35-5 94035-02-6

Appearance : white powder

Details:

Hydroxypropy-beta-cyclodextrin is the hydroxy alkyl derivatives of beta-cyclodextrin. Hydroxypropy-beta-cyclodextrin is non-toxic and no side effects. Because of its special structure, it can greatly increase the solubility of insoluble drugs, make insoluble drugs dissolve in water. So it can effectively improve the bioavailability of drugs, can greatly improve the quality of drugs and dosage form variety. Hydroxypropy-beta-cyclodextrin is widely used for development and production of new drugs.

Hydroxypropy-beta-cyclodextrin has very high water solubility in normal temperature, generally more than 50%. In room temperature, its solubility is 750mg/ml, but the solubility of beta-cyclodextrin is 18mg/ml.

The selectivity of hydroxypropy-beta-cyclodextrin for inclusion compound is different with beta-cyclodextrin. The molecular proportion for some materials inclusion can be different.

Hydroxypropy-beta-cyclodextrin and beta-cyclodextrin are basically not being decomposed and metabolized in human body, and also not accumulated. Oral hydroxypropy-beta-cyclodextrin can basically be totally excreted in the stools in complete form. For parenteral routes, it can basically be totally excreted in the urine in complete form. But beta-cyclodextrin has low water solubility, parenteral routes has renal toxicity and can`t be used for injection.

Comparing with beta-cyclodextrin or other derivatives, for example,methylation-beta- cyclodextrin, hydroxypropy-beta-cyclodextrin has low hemolytic activity, using more safety.

Hydroxypropy-beta-cyclodextrin can be applied in the following aspects:

1. To increase water solubility of poorly soluble drugs.
Hydroxypropy-beta-cyclodextrin has big solubility, the water solubility of poorly soluble drugs can be significantly increased with inclusion of hydroxypropy-beta-cyclodextrin, so it Is an ideal solubilizer for the insoluble drugs. Baicalin with inclusion of hydroxypropy-beta-cyclodextrin, its solubility in water is increased to 2.743mg/ml from 0.112 mg/ml, the solubility is increased by 24.5 times.

2. To enhance the stability of drugs.
Hydroxypropy-beta-cyclodextrin can better to increase the stability of the inclusion compound. For example, estradiol is enveloped by hydroxypropy-beta-cyclodextrin, placed at room temperature, the half-life of its degradation is prolonged from 1.2 years to 4 years.

3. To reduce the side effects of drugs
Hydroxypropy-beta-cyclodextrin can efficiently reduce toxic and side effects. For example, the blood vessel dilation drug nimodipine is difficult to soluble in water, it can have first-pass effect with taking orally. 0.05 mol/L hydroxypropy-beta-cyclodextrin can Increase its solubility 60 times, decreased the irritation to muscle. Hydroxypropy-beta-cyclodextrin can alleviate the injection pain caused by of etomidate.

4. To improve the utilization of drugs
Hydroxypropy-beta-cyclodextrin is prepared into inclusion compound with poorly soluble drugs, it not only can increase solubility and dissolution rate of drugs, but can improve the oral bioavailability. For example, ursodeoxycholic acid is enveloped by hydroxypropy-beta-cyclodextrin, disintegration time is the same as the listed products, but dissolve quickly and completely, for health volunteers oral bioavailability and peak concentrations are more than two times that of commercially available products.

Application of hydroxypropy-beta-cyclodextrin

1. Hydroxypropy-beta-cyclodextrin application in pharmaceutical industry.
In pharmaceutical industry, its relative surface activity and hemolytic activity is low, and no irritation to muscle, so it is an ideal injection solubilizing agent and drug excipients. Hydroxypropy-beta-cyclodextrin can enhance the solubility of poorly soluble drugs, increase drug stability, improve biologic utilization of drugs, increase efficacy of drugs or decrease dosage, can adjust or control the drug release rate, reduce the side effects of drugs. Hydroxypropy-beta-cyclodextrin can be used for oral medicine, injections, mucosal drug delivery systems, carrier of lipophilic targeted drugs. Hydroxypropy-beta-cyclodextrin can also be used for protective agent and stabilizer for protein.

2. Hydroxypropy-beta-cyclodextrin application in cosmetics industry.
Hydroxypropy-beta-cyclodextrin can be used as stabilizer, emulsifier, deodorant, and etc. in cosmetics raw materials, it can reduce the stimulation of organic molecules in cosmetics to skin and mucous membrane tissue, enhance stability of active ingredients, prevent volatilization and oxidation of nutrients. It can increase water solubility of insoluble flavors and fragrances, keep sustained release and lasting of aroma.

3. Hydroxypropy-beta-cyclodextrin application in food industry.
In food industry hydroxypropy-beta-cyclodextrin can enhance stability and long residual action of nutrient molecules, it can cover or rectify bad smell and taste of food nutrient elements, can improve production process and product quality, and increase shelf life of product.

Hydroxypropy-beta-cyclodextrin applications in medical field

1. Hydroxypropy-beta-cyclodextrin can increase water solubility of poorly soluble drugs.
Hydroxypropy-beta-cyclodextrin is easy to dissolve in water, the solubility at room temperature is generally greater than 50 g/100mL, even up to 80 g/100mL or more. When the concentration is less than 40%, the fluidity is good, the viscosity is not big. For the pharmaceutical industry it can improve the solubility of drugs, without using organic solvents, surfactants and lipids. The insoluble drug can significantly increase water solubility with inclusion of hydroxypropy-beta-cyclodextrin. After drugs form complex with hydroxypropy-beta-cyclodextrin, the increase of its concentration is linear with the increase of hydroxypropy-beta-cyclodextrin concentration.

2. Hydroxypropy-beta-cyclodextrin can increase the stability of drugs and improve the bioavailability of drugs.
In the storage process drugs will be affected by light, heat, humidity, and many other factors, which can directly affect drugs quality. So stability is an important investigation index. Once hydroxypropy-beta-cyclodextrin includes drugs, drugs enter into hole, it can play a role in preventing drug volatilization, sublimation, oxidation and light decomposition. The drugs inclusion with hydroxypropy-beta-cyclodextrin has fast dissolving speed, quick release, can increase the absorption of organism for drugs, it is beneficial to improve the bioavailability of drugs.

3. Hydroxypropy-beta-cyclodextrin can reduce the toxic and side effects of drugs.
Hydroxypropy-beta-cyclodextrin can make complexation for indissolvable drugs and converse route of medication, which can significantly reduce toxicity and irritation of drugs on human body.
Hydroxypropy-beta-cyclodextrin can be used for oral drugs, injections, mucosal drug delivery system Including nasal mucosa, rectum, cornea, etc, transdermal drug delivery system, carrier of lipophilic targeted drugs. Hydroxypropy-beta-cyclodextrin can also be used for protective agent and stabilizer for protein.

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Hydroxypropyl Beta Cyclodextrin
Hydroxypropyl Beta Cyclodextrin,hydroxypropyl-Î²-cyclodextrin
Zhiyuan Biotchnology , http://www.zycydextrin.com