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Organic acid anhydride paint crosslinking agent

2017-8-9 23:46:39

Organic acid anhydride paint crosslinking agent

Anhydride organic coatings and crosslinking agent and dicyandiamide are similar, has good storage stability, although the crosslinking temperature is higher, but the mechanical properties of crosslinked product, dielectric properties and heat resistance are good.

But organic acid anhydride kind of crosslinking agent and wet resistance because of the anhydride keys easy hydrolysis is poorer, the modification and is not easy, so generally adopt the method of adding promoters lower anhydride organic crosslinking agent and crosslinking temperature.

The crosslinking agents commonly used in organic acid anhydride crosslinking agents include tertiary amine and tertiary amine salts, seasonal phosphine salts, lewis acid - amine complex, acetylacetone transition metal complex and so on.

Anhydride kind of crosslinking agent is one of the epoxy crosslinking agent, is one of the must often to need after high temperature crosslinking performance of a crosslinking agent, is characterized by long operation time, low viscosity, high heat distortion temperature, resistant to high temperature, temperature tolerance. And we often speak of epoxy crosslinking agent, there are a lot of can be normal temperature crosslinking, alkaline in the majority.

Chlorinic anhydride is also known as hexachloric acid anhydride, chloroxbridge anhydride, hyalic anhydride, or HET, CA, white crystalline powder. Melting point 235 ~ 239 ~ C. Chlorine content is 57.1%, not flammable. Acid anhydride equivalent of 388, reference dosage of 100 ~ 110, applicable period (120 ~ C) 30min. Crosslinking conditions 100 ~ C / 2 h h or 120 ~ + 160 ℃ / 4 C / 2 h + 180 ~ 4 C/h or loo ~ C / 1 h + 160 ~ 0/4 h + 200 ~ C/lh. The heat deformation temperature of crosslinked materials is 180 ~ C, if 180 ~ C / 24h crosslinking can be 196 ~ C. Due to the high melting point of CA, the operation is difficult, usually with hexahydroanhydride 60:40 mixed use, melting point 85 ~ C, 180 ~ C / 20h crosslinking, thermal deformation temperature 142 ~ C. It can also be mixed with dodecyl succinic anhydride, maleic anhydride, methylnadiric anhydride and so on.

Four bromobenzene dimethyl anhydride, also known as four bromobenzene anhydride, referred to as "TBPA, theory of bromine content is 68.9%, light yellow and toner go melting point of 274 ~ 280 ℃. Toxic, LD50 is greater than 50mg/kg. The reference amount is 140,150. Crosslinking conditions 120 ~ C / 2 h + 180 ℃ / 4 h.

Tetrachlorobenzene dimethylanhydride is also called tetrachloric anhydride, or TCPA, and the chlorine content is 49.69/5, white crystalline powder. Melting point of 255 ~ 257 ~ C, the boiling point of 371 ℃. The reference dosage is 120 ~ 130. The cross-linking condition is loo ~ C / 2h + 160 ~ C / 4h.

Mixed anhydride solid acid anhydride is not convenient to use, with different varieties and the ratio of liquid can be obtained from acid anhydride, mixed anhydride, add a small amount of imidazole, benzyl dimethylamine, DMP 30, etc, can improve the heat resistance, water resistance, improve the bonding strength, speed up the crosslinking.

Chinese name: Diethyl toluene diamine(DETDA)

Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine

English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;

CAS No. :68479-98-1

EINECS No. :270 -877-4

Molecular formula: C11H18N2

Molecular Weight: 178.28

Boiling point: 310 ℃

Refractive index: 1.581

Flash Point: > 140 ℃

Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022

Risk Codes: R10; R35

RIDADR: UN 3082

Safety instructions: S2; S26; S39; S61

Packing Group: III

Hazard Class: 6.1

Diphenylether diphenyl diphenyl diphenyl-dpeda, white crystalline powder. Melting point 222 ℃, can evenly in epoxy resin, can also be mixed with HHPA and MNA crosslinking agent used, has better heat resistance, wet resistance and flexibility. Acid anhydride equivalent 155, reference dosage 60 ~ 75. Crosslinking condition 2 h + 120 ℃ / 120 ℃ / 2 h.

Cyclopentyl tetraxic acid dianhydride, or CPDA, white crystal. Melting point is 212 ℃. Acid anhydride equivalent of 105, reference amount of 60 ~ 80. Crosslinking conditions 120 ~ C / 2 h + 150 ℃ / 1 ~ 2 h.

Ketone benzene tetracarboxylic acid dianhydride BTDA melting point 227 ℃ / 100 standard resin with 27-48 crosslinking: 150-200 ℃ for 24 hours. Thermal deformation temperature of 240-290 ℃ bending strength, 560-700 Kg/cm2 impact strength - 2.7 Kg - 1.0 cm/cm2 rockwell hardness of 100-117

Methyl time within four hydrogen MNAHT906DQ19128 phthalic anhydride and methyl yellow liquid viscosity, dick anhydride 138 CPS per 100 in 72-90 standard resin crosslinking: 100-200 ℃ for 2-4 hours. Applicable period 500 grams of 25 ℃ for 5-6 days (promoter) thermal deformation temperature of 150-175 ℃ bending strength of 950 Kg/cm2 compressive strength of tensile strength of 1240 Kg/cm2, 680 Kg/cm2 elongation 2.5% impact strength 0.48 ft - 1 b/(Kg - 2.6 cm/cm2) in rockwell hardness 111 dielectric constant (hz23 50 ℃) 3.6 power factor (50 hz23 ℃) 0.002 volume resistance 2 x1016 Ω - cm low viscosity, excellent invasive, long service life.

Four hydrogen phthalic anhydride THPAHT909RXE - H70 anhydride melting point 100 ℃ / 100 resin with 52-70 crosslinked: 150-200 ℃ for 24 hours. Low toxicity, low volatility and good technology.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd

Diethyl toluene diamine(DETDA) http://www.yaruichem.com

Isopropylphenyl Phosphate(IPPP50)

Tris(2-chloroisopropyl)Phosphate(TCPP)

Triphenyl Phosphite (TPPI)

Triphenyl Phosphate (TPP)

Triethyl Phosphate (TEP)

4-Chlorobenzoic acid (PBCA)

Dimethyl thiotoluene diamine(DMTDA)

Diethyl toluene diamine(DETDA)

9-anthracene

Trimethyl Phosphate (TMP)

Isopropylphenyl Phosphate(IPPP65)