News Details
An oxazoline type crosslinking agent for epoxy coatings
2017-9-2 17:15:49
An oxazoline type crosslinking agent for epoxy coatings
1, 3 or 1, 4 - phenylenebisoxazoline (1, 3 or 1, 4 - phenylenebisoxazoline) is a representative variety of the oxazoline type crosslinking agent for epoxy coatings.
Aromatic dioxazoline (PBOX) and oxazoline crosslinking agent are widely used in liquid coatings as synergistic crosslinking agents.
In the case of nucleophilic or electrophilic reagent, oral oxazoline ring can be in about 150? It's going to be a plus. The nucleophilic reagent mainly attacks the slightly electropositive 4-bit C atoms connected with O, while the electrophilic reagent mainly attacks the 2-bit naked N atom.
Use of oxazoline class the properties of crosslinking agent, PBOX can and polyester resin, acid anhydride, epoxy resin, phenolic resin, phenolic reactions such as crosslinking agent constitute a class of fast crosslinking performance coatings system. The PBOX and carboxyl polyester resin were added to produce the ester - amide crosslinking structure.
There's no byproduct. The ester-amide structure has no strong H bond, thus providing low viscosity and high flow performance. It has been found that PBOX as crosslinking agent in polyester powder coating presents a very good levelness, excellent chemical resistance, high anti-scratch and mechanical properties. In addition, excellent storage stability, color retention and excellent weathering ability.
Polyester resin is short for unsaturated polyester adhesive. Unsaturated polyester adhesives are mainly composed of unsaturated polyester resin, initiator, promoter, filler and thixotropic agents. Main chain contains - CH = CH - double bond of a linear structure (see the linear polymer) polyester resin, with alkene monomers, such as styrene, acrylate and vinyl acetate mixture, under the action of initiator and accelerator, interesting aggregated into insoluble, does not melt under product. The abbreviation for unsaturated polyester is UP. Mainly used in the production of rolling paint.
Polyester resins are the general term of polymer compounds derived from diglycol or dibasic acid or polyols and polyacid.
Polyester resin is divided into saturated polyester resin and unsaturated polyester resin. Unsaturated polyester adhesive is mainly composed of unsaturated polyester resin, facial filler and initiator. Adhesive viscosity is small, easy to moisten, the process is good, the rubber layer after the crosslinking is large, the transparency is good, the brightness is high, the room temperature is pressurized fast crosslinking, the heat resistance is good, the electrical performance is good. The disadvantage is that the shrinkage rate is large, the adhesive toughness is not high, the chemical resistance and water resistance are poor, and it is used for the non-structural adhesives. Mainly used for adhesion glass, hard plastic, concrete, gas canister seal etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
1, 3 or 1, 4 - phenylenebisoxazoline (1, 3 or 1, 4 - phenylenebisoxazoline) is a representative variety of the oxazoline type crosslinking agent for epoxy coatings.
Aromatic dioxazoline (PBOX) and oxazoline crosslinking agent are widely used in liquid coatings as synergistic crosslinking agents.
In the case of nucleophilic or electrophilic reagent, oral oxazoline ring can be in about 150? It's going to be a plus. The nucleophilic reagent mainly attacks the slightly electropositive 4-bit C atoms connected with O, while the electrophilic reagent mainly attacks the 2-bit naked N atom.
Use of oxazoline class the properties of crosslinking agent, PBOX can and polyester resin, acid anhydride, epoxy resin, phenolic resin, phenolic reactions such as crosslinking agent constitute a class of fast crosslinking performance coatings system. The PBOX and carboxyl polyester resin were added to produce the ester - amide crosslinking structure.
There's no byproduct. The ester-amide structure has no strong H bond, thus providing low viscosity and high flow performance. It has been found that PBOX as crosslinking agent in polyester powder coating presents a very good levelness, excellent chemical resistance, high anti-scratch and mechanical properties. In addition, excellent storage stability, color retention and excellent weathering ability.
Polyester resin is short for unsaturated polyester adhesive. Unsaturated polyester adhesives are mainly composed of unsaturated polyester resin, initiator, promoter, filler and thixotropic agents. Main chain contains - CH = CH - double bond of a linear structure (see the linear polymer) polyester resin, with alkene monomers, such as styrene, acrylate and vinyl acetate mixture, under the action of initiator and accelerator, interesting aggregated into insoluble, does not melt under product. The abbreviation for unsaturated polyester is UP. Mainly used in the production of rolling paint.
Polyester resins are the general term of polymer compounds derived from diglycol or dibasic acid or polyols and polyacid.
Polyester resin is divided into saturated polyester resin and unsaturated polyester resin. Unsaturated polyester adhesive is mainly composed of unsaturated polyester resin, facial filler and initiator. Adhesive viscosity is small, easy to moisten, the process is good, the rubber layer after the crosslinking is large, the transparency is good, the brightness is high, the room temperature is pressurized fast crosslinking, the heat resistance is good, the electrical performance is good. The disadvantage is that the shrinkage rate is large, the adhesive toughness is not high, the chemical resistance and water resistance are poor, and it is used for the non-structural adhesives. Mainly used for adhesion glass, hard plastic, concrete, gas canister seal etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
The difference between polyester resin and alkyd resin is that the raw material of synthetic polyester resin contains no fatty acid which is mainly embodied in vegetable oil or oil. Polyester can be divided into saturated polyester and unsaturated polyester. Saturated polyester refers to the unsaturated bond that is not contained in the synthetic raw material.
The raw materials of synthetic saturated polyester resin are di-yuan alcohol, diyuan acid and ternary alcohol, and individual is also monool or monic acid. The most commonly used alcohol is the new pentadiol, and its esterification is much better than glycol and propylene glycol. Trimethylalcohol is mainly trimethyl-propane and trihydroxyethyl ethane.
Is the most commonly used aromatic dibasic acid, isophthalic acid, as a result of isophthalic acid salt fog resistance, chemical resistance and water resistance near phthalate is superior, so isophthalic acid was more prevalent in the application of polyester resin. It is also used in synthetic polyester resin, such as adipic acid, azylic acid and sebacic acid, which are more common in the use of adipic acid. Most resins contain aromatic di-acid and aliphatic dibasic acid, and the molar ratio of di-acid and adipotic acid in aromatic di-acid is the main factor controlling the Tg of resin.
There are two heteroatoms and one of them is a five-element ring system called N called the azole, which is a lot. Depending on the location of the heteroatoms in the ring, there are 1, 2-azole and 1, 3-azole. The compounds in the five-membered ring are N and O compounds, which are oxazole, which have many kinds, including oxazole (1), oxazoline (2), oxazolane (3), oxazolone, benzoxazole (4), etc.
Oxazole compounds are an important class of heterocyclic compounds, and some compounds with oxazoles have bioactive [1]. For example, 2 - aminoxazole has the effect of killing fungi, antibacterial and anti-virus. They are also widely used in intermediates and drug synthesis.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The difference between polyester resin and alkyd resin is that the raw material of synthetic polyester resin contains no fatty acid which is mainly embodied in vegetable oil or oil. Polyester can be divided into saturated polyester and unsaturated polyester. Saturated polyester refers to the unsaturated bond that is not contained in the synthetic raw material.
The raw materials of synthetic saturated polyester resin are di-yuan alcohol, diyuan acid and ternary alcohol, and individual is also monool or monic acid. The most commonly used alcohol is the new pentadiol, and its esterification is much better than glycol and propylene glycol. Trimethylalcohol is mainly trimethyl-propane and trihydroxyethyl ethane.
Is the most commonly used aromatic dibasic acid, isophthalic acid, as a result of isophthalic acid salt fog resistance, chemical resistance and water resistance near phthalate is superior, so isophthalic acid was more prevalent in the application of polyester resin. It is also used in synthetic polyester resin, such as adipic acid, azylic acid and sebacic acid, which are more common in the use of adipic acid. Most resins contain aromatic di-acid and aliphatic dibasic acid, and the molar ratio of di-acid and adipotic acid in aromatic di-acid is the main factor controlling the Tg of resin.
There are two heteroatoms and one of them is a five-element ring system called N called the azole, which is a lot. Depending on the location of the heteroatoms in the ring, there are 1, 2-azole and 1, 3-azole. The compounds in the five-membered ring are N and O compounds, which are oxazole, which have many kinds, including oxazole (1), oxazoline (2), oxazolane (3), oxazolone, benzoxazole (4), etc.
Oxazole compounds are an important class of heterocyclic compounds, and some compounds with oxazoles have bioactive [1]. For example, 2 - aminoxazole has the effect of killing fungi, antibacterial and anti-virus. They are also widely used in intermediates and drug synthesis.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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