Styrene Modified Alkyd Resin Chemical Mechanism And Process Optimization

HC plastic mesh News: 1, Introduction

Alkyd resin is a polyol, multiple acid and acid condensation made a dollar a linear resin, with the synthesis of mature technology, manufacturing process is simple and easy to get raw materials and the resin coating and good overall performance characteristics of coatings used in the synthesis of resin, the largest and most widely used dosage. According to statistics reported in 1997, the National Paint 135 total tons, of which about 350,000 tons alkyd paint, accounting for 52.9% of synthetic resin; United Kingdom, the United States and other developed countries accounted for 30% to 40%, the highest synthesis resin first. However, alkyd paint also has some shortcomings, such as the film is slow drying, low hardness, poor water resistance, which will lead to extended construction period, but also affect its application. To solve the above problems, an integrated domestic and international aspects of the modified alkyd resins reported in the literature, this article through several different methods of chemical modification of alkyd resins were compared to study the mechanism of styrene-modified alkyd resin, the same time, the foundation Synthesis of alkyd resins and alkyd resins both were optimized. The results will be fast-drying alkyd resin to provide theoretical guidance for industrial production and a strong reference.

2, styrene modified alkyd resin chemistry and mechanism of the Methods

Traditional unsaturated oil (fatty acid) modified alkyd resin molecules with hydroxyl, carboxyl, double bond, ester and other reactive groups, therefore, can be chemically synthesized by means of the introduction of other active groups, so that broad chemical modification of alkyd base Jinchu chemical modification can be divided into the following categories: such as Modifier From the carboxyl function, the role of modifier and the use of the double bond from the reaction of hydroxyl chemical modification. Especially the use of chemical modification of the double bond most important chemical modification reaction, in which the most typical modified styrene, copolymerization mainly two kinds of law and pre-polymer.

2.1, copolymerization Vinyl monomer modified alkyd resin often used copolymerization. In accordance with the law of styrene copolymerization time and join in different ways, can be divided into before and after styrene of styrene of two methods.

2.1.1, the former method of styrene

Method includes pre-styrene styrene method of vegetable oils, fatty acids of styrene-based method and the method of styrene monoglyceride of three. Several methods of the above process Styrene points are as follows.

(1) vegetable oil styrene method Process of the law points are: First, styrene monomer and oil in the presence of initiator the reaction of copolymer oil this homogeneous product, the product can be prepared directly instead of vegetable oil alkyd resin. Styrene-based vegetable oil, first glycerol (pentaerythritol or other polyols) alcohol solution generation fatty acid monoglyceride and then phthalic anhydride and other multi-acid esterification.

(2) fatty acid method of styrene

Process of the law points are: first styrene and the initiator dropping into the acid containing DCO reactor, the reaction of styrene for fatty acid, and then vacuum distillation to remove the remaining styrene, further reaction cauldron by adding glycerin and other polyols in the alcohol under inert gas protection solution, and finally into the composition the amount of acid anhydride and other multi-esterification.

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The Flood Light Bulbs: Excellent Choice To Modify The Environment At Your Residence

When the word flood light bulbs emerge in your mind, you will remember the tool which will provide the bright illumination to the surrounding area to deter the crime. However, the bulbs have the ability to enhance the beauty in your home.

Not only enhancing the beauty in your home, but you will also provide the security protection for your home. You can give your home and your lawn different color which will mesmerize you. It can be said that the bulbs have the dual function.

The flood light bulbs come in various sizes and forms. The most common type of the bulb is the moon shaped bulb. It can give you greater illumination for the surroundings. However, it depends on the wattage number in your home. If you use the fifty watts light bulb, you will not get the brighter light like one hundred watts bulbs. Even so, the fifty watts light bulb is cheaper in cost than the 100 watts bulbs. You will not need to spend more money for the electricity bills.

Many light bulbs come in the half moon or the cone shaped enclosures which are layered with the silver patina on the sides. This design allows you the light to bounce back and forth the silver coating. From this process, you will get more intensive brightness. When it is shining out the opening, you will get the appearance of the light flooding out from the source.

You may also find the modern light bulbs. These bulbs are composed by the tiny LED lights clustering together to form the single light source. You will get the bright light with lesser electrical consumption than the single fifty watts or one hundred watts bulb. This bulb is designed so it can last for the long time. Like other light bulbs, when you drop the light even from very low heights, it can be broken. However, this modern light bulb is different with the other light bulbs since it is composed of the LED which can bear the shock when you accidentally drop it.

Even though the light bulb has the characteristic producing the yellowish light, you can also get the dazzling white light or other soft color tones like the red or green. You can use the light in your indoor area as the wall illuminator or outdoor to add the texture and the detail to your home.

If you have a nice garden in your home, you should buy the light bulb for your garden accessory. When the night time is coming, you can turn the light on. Your garden will get the effect of the light and can appear more beautiful than your ordinary garden. This will conduct the perfect atmosphere when you have the romantic dinner or the great party in your garden.

By using the flood light bulbs, you can create the tone if your house is too plain. You may also use the spiral light bulbs to give different tone in your home.

Careful Selection Modified Products “cottage” Version

car modify
by Nazly

Drive a modified car driving the wind pulling at the Shennan Avenue, always keep returning attracted more than N, which is car, “Chao human family,” their first choice!

With the Shenzhen stock cars “fans” growing team, Shenzhen, modified car environment is improving, the state issued a new “motor vehicle registration requirement” in addition to some changes in the relaxation of motor vehicles , modified the procedures change much simpler. If it is not out of range modification, alteration to the vehicle within ten days after the application for registration of change management on the line, this will no doubt add new car sales market is to promote a new marketing tool.

The face of car modification lucrative market, many shops in Shenzhen car dealer 4S launched a variety of modified versions?? “Leadership Edition,” “Grand Canal Edition”, “Royal Edition”, “intellectual respect Edition “; both professional conversion shop, auto repair shops, or car accessories shops, all selling car modification products, and even beauty shop car car modification can also play signs, the market can be described as mixed ah! for consumers overwhelmed conversion market, how exactly is going on inside it?

In the automotive luxury market, the jargon of the “pieces are factory”, “deputy plant parts” is something consumers are confused. The “Genuine Parts”, “deputy factory conditions” several times the price difference between the frequent, and because the so-called “Genuine Parts”, “deputy plant parts” has not been related to the quality supervision department to be tested and identified, so identify them, really like today’s cottage between mobile phones and genuine licensed to lifelike proportions, then out to the “positive plant parts” of the money, buy a “deputy plant parts” of the goods.

According to industry sources, for many “cottage” version of modified car supplies, consumer hard to distinguish, so often pay big bucks to buy frequent cases of poor-quality goods. Used as raw materials, molds, processing of different “cottage” version of automotive supplies and the quality product the price gap between the sometimes up to 50% to 60% on the automobile tail as an example, “cottage” version of the price of only 8 90 yuan, 200 yuan while the price of quality product to consumers, even in the 4S shop several times higher than the price, also got used to things.

“Genuine Parts” and “Vice-factory parts,” the quality is not comparable, for example: a section of a goods vehicle for tailored, but the installation process because of individual differences in the vehicle itself. Its installation site is also prone to damage flammable, deformation, loss and other phenomena, to the adverse impact of vehicles; from supplies its own view, “the cottage” version of parts and supplies can not match the vehicle color, even color similar to the vehicle, but after a period of time there will be bad, discoloration, etc., in the current market order under this there is absolutely no fuss about.

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