News Details
Modified phenolic flame retardant
2017-11-2 11:12:21
Modified phenolic flame retardant
Organic phosphorus flame retardants. Multimeric metaphosphate organic phosphorus modified phenolic flame retardant agent generated during combustion can form a stable, covered on the surface of the composite materials from oxygen and combustible, play the effect of flame retardant, the flame retardant effect is better than that of bromide, to achieve the same effect of flame retardant, bromide dosage phosphide 4 ~ 7 times. Organic phosphorus modified phenolic flame retardants mainly include phosphorus (phosphonate) ester and halogen containing phosphate ester and halogenated phosphorus. Organic phosphorus modified phenolic flame retardant is widely used in phenolic resin.
There are two kinds of synthesis methods of phenol aldehyde modified amine:
(1) one step method: phenol, amines and aldehydes were put into the reactor according to a certain mole ratio, and the modified amine curing agent was synthesized under suitable operating conditions
(2) two step method: phenol and aldehyde are shrunk to synthesize low molecular weight resin, and then reacted with amine to obtain liquid aldehyde imine. The key of this method is to master the feed ratio of phenol and aldehyde.
The lower the molecular weight of the resin is, the lower the amine value is and the worse the fluidity is.
The two processes can fear synthesis of modified amine. But in the actual operation is difficult, long production cycle, the product quality is stable, the operation is simple, easy to control, stable process, short production cycle, only 6 8h / number, equipment utilization rate is high, the manufacturers are using one-step production.
Currently commercially available curing agents such as JA, l, 701,.702703703-A, T31 all belong to the modified phenolic amine category, but the same products, different manufacturers of control parameters are not the same, and adding suitable additives.
During the Manny reaction, phenol can be modified to improve the toughness of the cured resin. For example, according to the principle of the substitution reaction of alkenes on their hydrocarbons in classical organic chemistry, a flexible long chain with conjugated double bonds was introduced into one of three active hydrogen sites on the ortho aromatic ring of the phenol aromatic ring
The remaining two active hydrogen position can still occur Mannes. The results of this modified curing reaction product with epoxy resin, the more long chain in curing curing agent. The molecular structure has greatly improved the Fu resin bolt and has higher flexibility, adhesion and adhesion.
Tris(2-chloroisopropyl)Phosphate(TCPP)
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Due to the transport process to avoid collision damage, Tris2-chloropropyl phosphate TCPP packaging methods generally used 250KG galvanized iron drum.
Below to introduce some of Tris2-chloropropyl phosphate TCPP packaging:
Net weight 250KG/ galvanized iron drum (a small cabinet pallet loaded 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Company 1.5 hour drive from Shanghai, the general sent to Shanghai port, the goods from customs inspection to the fastest one week after, the slowest ten days.
In view of the domestic and foreign demand is relatively small clients, also can use 50KG plastic bucket.
If you have special requirements on the Tris2-chloropropyl phosphate TCPP packaging, please contact us, try to meet the packaging requirements of customers.
The method of producing two benzene amine is mainly made by the method of two nitrobenzene reduction.
Benzene by nitration, and on two between adjacent nitrobenzene mixtures by sodium sulfite and alkali refining to obtain two nitrobenzene, and then use the iron reduction or hydrogenation reduction to obtain two benzene amine.
1) iron powder reduction method: firstly, iron powder and hydrochloric acid were added into the reactor with agitator, and the temperature was activated. Adding nitrobenzene reduction reaction, temperature controlled at 98-102 DEG C; the end of the reaction, adding soda neutralized to pH value 9, vacuum filtration, filtrate washing with hot water, evaporated in vacuum 0.03MPa and 65 C. The water vapor was distilled at a temperature of 170-180 0.09-0.05MPa, and the product was obtained after distillation.
Method: 2) hydrogenation reduction of hydrogen and nitrogen between the two reduction of nitrobenzene with pure hydrogen or hydrogen containing 70% of hydrogenation, with two yuan or four yuan of Raney nickel catalyst (20% dosage), ethanol as solvent, at 110-120 DEG C, hydrogen pressure 3.43-4.41MPa, circulating velocity of empty tower 0.044 square cubic meters per second conditions. The tower of fluidized bed hydrogenation; then by vacuum distillation to obtain qualified products, the yield of 90%-95%. The reaction equation is as follows:
3) aniline direct amination method: the nickel and nickel oxides as catalyst, aniline and ammonia and reaction temperature of 250-500, the direct reaction pressure is 29.4-39.2kPa, mixed benzene two amine products with benzene two amine as the main product, but the yield of less than 10%.
Butanone is relatively stable to heat, and more than 500 degrees of thermal cracking produces ketene or methyl ketene. When condensed with aliphatic or aromatic aldehydes, high molecular weight ketones, cyclic compounds, ketal and resins are formed.
With the condensation of phenol 2,2- (4- hydroxyphenyl) butane. With the reaction of aliphatic esters in the presence of alkaline catalyst, generating two beta ketone. In the presence of acid catalyst, acylation occurs with anhydride to produce beta - two ketones. The reaction of hydrogen cyanide and cyanohydrin. Synthesis of keto piperidine derivatives by reaction with ammonia. The alpha hydrogen atom of butanone is easily replaced by halogen to form various halogenated ketones, such as 3- chloro -2- butanone with chlorine. With 2,4- two, 4-dinitrophenylhydrazine produce yellow 2,4- two hydrazone (M.P. 115 C) nitrobenzene.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Organic phosphorus flame retardants. Multimeric metaphosphate organic phosphorus modified phenolic flame retardant agent generated during combustion can form a stable, covered on the surface of the composite materials from oxygen and combustible, play the effect of flame retardant, the flame retardant effect is better than that of bromide, to achieve the same effect of flame retardant, bromide dosage phosphide 4 ~ 7 times. Organic phosphorus modified phenolic flame retardants mainly include phosphorus (phosphonate) ester and halogen containing phosphate ester and halogenated phosphorus. Organic phosphorus modified phenolic flame retardant is widely used in phenolic resin.
There are two kinds of synthesis methods of phenol aldehyde modified amine:
(1) one step method: phenol, amines and aldehydes were put into the reactor according to a certain mole ratio, and the modified amine curing agent was synthesized under suitable operating conditions
(2) two step method: phenol and aldehyde are shrunk to synthesize low molecular weight resin, and then reacted with amine to obtain liquid aldehyde imine. The key of this method is to master the feed ratio of phenol and aldehyde.
The lower the molecular weight of the resin is, the lower the amine value is and the worse the fluidity is.
The two processes can fear synthesis of modified amine. But in the actual operation is difficult, long production cycle, the product quality is stable, the operation is simple, easy to control, stable process, short production cycle, only 6 8h / number, equipment utilization rate is high, the manufacturers are using one-step production.
Currently commercially available curing agents such as JA, l, 701,.702703703-A, T31 all belong to the modified phenolic amine category, but the same products, different manufacturers of control parameters are not the same, and adding suitable additives.
During the Manny reaction, phenol can be modified to improve the toughness of the cured resin. For example, according to the principle of the substitution reaction of alkenes on their hydrocarbons in classical organic chemistry, a flexible long chain with conjugated double bonds was introduced into one of three active hydrogen sites on the ortho aromatic ring of the phenol aromatic ring
The remaining two active hydrogen position can still occur Mannes. The results of this modified curing reaction product with epoxy resin, the more long chain in curing curing agent. The molecular structure has greatly improved the Fu resin bolt and has higher flexibility, adhesion and adhesion.
Tris(2-chloroisopropyl)Phosphate(TCPP)
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Due to the transport process to avoid collision damage, Tris2-chloropropyl phosphate TCPP packaging methods generally used 250KG galvanized iron drum.
Below to introduce some of Tris2-chloropropyl phosphate TCPP packaging:
Net weight 250KG/ galvanized iron drum (a small cabinet pallet loaded 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Company 1.5 hour drive from Shanghai, the general sent to Shanghai port, the goods from customs inspection to the fastest one week after, the slowest ten days.
In view of the domestic and foreign demand is relatively small clients, also can use 50KG plastic bucket.
If you have special requirements on the Tris2-chloropropyl phosphate TCPP packaging, please contact us, try to meet the packaging requirements of customers.
The method of producing two benzene amine is mainly made by the method of two nitrobenzene reduction.
Benzene by nitration, and on two between adjacent nitrobenzene mixtures by sodium sulfite and alkali refining to obtain two nitrobenzene, and then use the iron reduction or hydrogenation reduction to obtain two benzene amine.
1) iron powder reduction method: firstly, iron powder and hydrochloric acid were added into the reactor with agitator, and the temperature was activated. Adding nitrobenzene reduction reaction, temperature controlled at 98-102 DEG C; the end of the reaction, adding soda neutralized to pH value 9, vacuum filtration, filtrate washing with hot water, evaporated in vacuum 0.03MPa and 65 C. The water vapor was distilled at a temperature of 170-180 0.09-0.05MPa, and the product was obtained after distillation.
Method: 2) hydrogenation reduction of hydrogen and nitrogen between the two reduction of nitrobenzene with pure hydrogen or hydrogen containing 70% of hydrogenation, with two yuan or four yuan of Raney nickel catalyst (20% dosage), ethanol as solvent, at 110-120 DEG C, hydrogen pressure 3.43-4.41MPa, circulating velocity of empty tower 0.044 square cubic meters per second conditions. The tower of fluidized bed hydrogenation; then by vacuum distillation to obtain qualified products, the yield of 90%-95%. The reaction equation is as follows:
3) aniline direct amination method: the nickel and nickel oxides as catalyst, aniline and ammonia and reaction temperature of 250-500, the direct reaction pressure is 29.4-39.2kPa, mixed benzene two amine products with benzene two amine as the main product, but the yield of less than 10%.
Butanone is relatively stable to heat, and more than 500 degrees of thermal cracking produces ketene or methyl ketene. When condensed with aliphatic or aromatic aldehydes, high molecular weight ketones, cyclic compounds, ketal and resins are formed.
With the condensation of phenol 2,2- (4- hydroxyphenyl) butane. With the reaction of aliphatic esters in the presence of alkaline catalyst, generating two beta ketone. In the presence of acid catalyst, acylation occurs with anhydride to produce beta - two ketones. The reaction of hydrogen cyanide and cyanohydrin. Synthesis of keto piperidine derivatives by reaction with ammonia. The alpha hydrogen atom of butanone is easily replaced by halogen to form various halogenated ketones, such as 3- chloro -2- butanone with chlorine. With 2,4- two, 4-dinitrophenylhydrazine produce yellow 2,4- two hydrazone (M.P. 115 C) nitrobenzene.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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