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Alkyd resins from polyhydric alcohol, phthalic anhydride and fatty acid or oil (triglyceride fatty acid ester) condensation polymerization of oil-modified polyester resin. By fatty acid (or oil) molecules in the double bond number and structure can be divided into dry, semi-and non-dry categories. Dry alkyd resin can be cured in the air; non-drying alkyd resin will have to with the amino resin mixture can be cured by heating. There is also can be used in fatty acid (or oil), or the content of phthalic anhydride, is divided into short, medium, long and very long four kinds of oil alkyd degrees. Alkyd resin film after curing, shiny and toughness, strong adhesion and good abrasion resistance, weather resistance and insulation and so on.
Alkyd resin can be melt polycondensation or solution polycondensation manufacturing. Melting method is glycerin, phthalic anhydride, fatty acid or oil in an inert atmosphere heated to above 200 ℃ esterification, until the acid value meet the requirements, coupled with diluted solvents. Solution polycondensation method is the reaction in xylene and other solvents, xylene is solvent, but also as a water azeotropic liquid, can increase the reaction rate. Reaction temperature is lower than the melt polycondensation, the product slightly stained. The resin properties with the structure of fatty acid or oil to another. Alkyd resin is mainly used for coatings, paint, metal protection, furniture, vehicles, buildings, etc. are widely used, but also can be used as the insulating layer of enameled wire, made of a large number of inks used in the printing industry, in addition, for the manufacture of molded plastic .
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Alkyd:
IMDG Classification and number of flammable liquids. Reference GB3.3 class 33645. UNNO.1866; IMDG CODE 3278,3379 pages, 3.3 class.
Physical and chemical properties brown viscous liquid. Is a modified soybean oil pentaerythritol and phthalic anhydride Condensation in the 200 petrol solvent solution.
Hazardous properties flammable, flash point 23 ~ 61 ℃. When the temperature, open flame, oxidizing agents caused any fire hazard. Thermal decomposition products toxic resin.
Identification of accident types: fire, poisoning, the container burst.
Fire emergency response method: firefighters must wear gas masks and full-body protective clothing. Foam, water spray, dry powder, carbon dioxide, 1211 fire extinguishing agent, sand fire. First Aid: Inhalation should be made from the pyrolysis gases in patients with contaminated areas, resettlement rest and keep warm. In severe cases, sent to hospital for treatment.
Information storage and transportation of dangerous goods. Packaging flag: flammable liquids. Packing method: (Ⅲ) class. Drum. Storage condition: stored in cool, ventilated coffers. Keep away from heat and fire, avoid direct sunlight. Isolated storage and transportation with the oxidants. Leak treatment: First, cut off the source of fire, wear gas masks and gloves. Absorbed with sand, down to the open areas in the buried or burned in incinerators. Contaminated the ground with putty Daogua clear. A large area of water leakage around the screen should be set up mist explosion suppression.

Amino resin by containing the amino compounds with formaldehyde resin formed by the condensation of the general. Important resin urea-formaldehyde resin, melamine-formaldehyde resin and aniline formaldehyde resin. Generally be made of aqueous or ethanol solution, can also be dried into a powder solid. Most of the hard and brittle, when you need to increase the use of filler.
Amino resin coating is a multi functional groups of compounds in order to contain (-NH2) functional group compounds with aldehydes (mainly formaldehyde) addition condensation, then the resulting hydroxymethyl (-CH20H) and the aliphatic monohydric alcohols part of the ether of or all of the ether of the product to be 2. According to the amino compounds used can be divided into different categories: urea-formaldehyde resin, melamine resin, benzene, on behalf of the melamine resin, copolymer resin.
If used alone as a film if the amino resin, obtained film is too hard, and brittle hair, poor adhesion to the substrate, it usually is compatible with the amino resin, and can be cross-linked by heating other types of resins usable by He can be used as oil-modified alkyd resins, unsaturated polyester resin, acrylic resin, epoxy resin, epoxy ester such as cross-linking agent, such as matching, by heating can be three-dimensional network structure, there is strength and toughness of paint membrane, depending on the use of amino resins and other resins match the changes, the resulting film has its own characteristics.
With the amino resin as crosslinking agent film with excellent gloss, color retention, hardness, chemical resistance, water resistance and weather resistance, etc. Therefore, amino resin as crosslinking agent is widely used in paints and automotive, industrial and agricultural machinery, just-made furniture, household appliances and metal pre-coated and other industrial coatings. Amino resin in the presence of acid catalyst may be in the bottom temperature baking or curing at room temperature, this performance can be used for reaction of two liquid-based wood coating and automotive repair coatings.

Epoxy Overview
Epoxy resins are generally refers to molecules containing two or more epoxy group of organic polymers, barring a few exceptions, their relative molecular weight is not high. The molecular structure of epoxy resin is based on the molecular chain containing active epoxy group for its features, the epoxy group can be located at the end of molecular chain, in the middle, or into a cyclic structure. As the molecular structure containing active epoxy groups, so that they can place a variety of types of curing agents to form insoluble cross-linking reaction, non-melting with a three-network structure of the polymer.
Where the molecular structure of the polymer containing epoxy group collectively referred to as epoxy resin. Cured epoxy resin has excellent physical and chemical properties, its surface metal and nonmetal materials have excellent adhesive strength, good dielectric properties, variable setting shrinkage is small, product size, good stability, high hardness, flexibility of good stability of the alkali and most of the solvents, which are widely used in national defense, national economic departments for pouring, dipping, laminating materials, adhesives, paints and so on.
In China since 1958 conducted a study of epoxy resin and to speed quickly put into industrial production, has been booming throughout the country, in addition to producing common bisphenol A-epichlorohydrin epoxy resin, the yet the production of new types of epoxy resin, in order to meet national defense construction and national economic sectors need hair.
Preparation of epoxy resin has the following several types:
1, the active hydride reaction with epichlorohydrin;
2, hydrogen peroxide or a peracid (eg peracetic acid) to double bond liquid-phase oxidation;
3, double bond compounds, the air oxidation;
4, other.
Because of its performance is not perfect, while the target application of epoxy resin is not all a thousand times, according to the use of different targets, the performance of epoxy resin have also been asked, for example, some request a low-temperature drying, and some excellent insulation performance requirements. And therefore should be targeted to the epoxy resin to be modified, the modified method has the following categories:
1, select the curing agent;
2, add reactive diluents;
3, add the filler;
4, add other kinds of thermosetting or thermoplastic resin;
5, modified epoxy resin itself.