Application Examples of Boron Trifluoride Methanol Complex_Industrial Additives

Background and overview^[1]

Boron trifluoride methanol complex, also known as boron trifluoride dimethanol complex, is a toxic chemical intermediate. Avoid direct contact. Because the B in the center of the boron trifluoride molecule does not satisfy eight electrons (only six), it can coordinate with substances with lone pairs of electrons. The oxygen in methanol has two pairs of lone pairs of electrons, so the oxygen takes out one The electrons are coordinated with B, and finally a boron trifluoride methanol complex is formed.

Apply^[1-3]

Application 1. CN201010171290.8 involves a method for synthesizing 2,3,4,4′-tetrahydroxybenzophenone, using boron trifluoride methanol solution as a catalyst, pyrogallic acid and p-hydroxybenzoic acid Synthesize 2,3,4,4′-tetrahydroxybenzophenone as raw material. Boron trifluoride methanol solution is used as a catalyst to acylate pyrogallic acid and p-hydroxybenzoic acid at a certain temperature to prepare 2,3,4,4′-tetrahydroxybenzophenone.

Application 2. CN201410244115.5 discloses a synthesis method of fluorine-containing polyether polyols, which uses boron trifluoride methanol and ethylene glycol as the initiator system, and adopts a living controllable polymerization method to synthesize fluorine-containing polyether polyols with controllable molecular weight. Fluoropolyether polyols. The synthesis method of the fluorine-containing polyether polyol of the present invention is effective. Since the synthesis process uses boron trifluoride methanol and ethylene glycol as the initiating system, the cationic polymerization reaction rate is reduced, reflecting the characteristics of living polymerization, and effectively controlling Molecular weight of fluoropolyether polyols.

Application 3. CN201611214763.1 discloses a biodegradable color printing ink additive. The main chain extender raw materials in terms of parts by weight of the biodegradable color printing ink additive are: 5-10 parts of menthol, blue 2-6 parts of calyxine, 17-22 parts of Chasmanlin, 20-30 parts of 13-dehydroxyplastine, 8-17 parts of Gomisin G-8, 15-25 parts of Huntsman dye , Scopolamine 11-14 parts, 2-chloro-6-fluorophenol 5-9 parts, chloromethyl methyl ether 7-12 parts, boron trifluoride methanol 0.5-0.8 parts, pentobarbital sodium salt 2- 4 parts, 2-4 parts of 2-aminophenol-4-(2-carboxy)sulfonanilide, 2-4 parts of cis-dichlorobis(diethyl sulfide)platinum. This ink additive is environmentally friendly, harmless, safe, stable in nature, and has good printing effects; when recycling waste products, under the action of the decolorizing agent, the ink can be quickly decolored, which not only eliminates the volatilization of organic solvents in oil-based inks It also solves the problems of difficulty in deinking waste paper and serious sewage discharge.

References

[1] CN201010171290.8 A method of synthesizing 2,3,4,4′-tetrahydroxybenzophenone

[2]CN201410244115.5 Synthesis method of fluorine-containing polyether polyol

[3]CN201611214763.1 A biodegradable color printing ink additive