Rubber accelerator MBT(M) .

Desc 10 a ni.Ription: 1.1.

MBT(M) a ni a.

Accelerator Hming .	2-mercaptobenzothiazole ah a awm a.
Molecular formula 1000 a ni.	C7H5NS a ni a.2
Molecular structure 1000 a ni.
Molecular rit zawng .	167.26
Gravity 100 a ni.	1.42
CAS No.	149-30-4
Bawm	25kg/bag a ni.
Storage nunna .	Thla 24 chhung .

Specification:

Raw material route atanga a lan dan chuan:

1) aniline hmanga siam;

2) O-Nitrophenyl chloride hman dan;

3) n-methylaniline hmanga hman dan;

4) n,n{{1}Thil tha lo tak tak a ni a;

5) dimethylamine hmanga siam a ni a;

6) Haloaniline hmanga tih dan tur;

7) benzothiazole hmanga siam a ni a;

8) O-chlorothiophenol hmanga siam a ni a;

9) Nitrobenzene hman dan leh a ang chi.

Rubber Vulcanization Accelerator M-a specific synthesis process M chu: Molten sulfur, aniline, CS2, benzothiazole chu high pressure reaction kettle-ah stirring-in a dah a, reaction temperature chu 250℃C a ni a, pressure chu 5.87 MPa a ni a, reaction zawh hnuah pressure chu a chhuak a, gas phase chu a chhuak a, CS2-a CS2-te chu CS2-ah a lut a, CS2-ah a lut a, CSS2 chu a lut a ni. hlawm khat. Molten M chu dissolution tank chhungah a lut a, NaOH solution hmangin a inthiar a, chu chu insoluble matter chu filtration hmangin a chhuak a ni. Filtrate chu toluene hmangin an la chhuak a, chu chuan-product benzothiazole leh tar dang hmangin a lo chhuak leh a. Toluene layer chu solvent recovery process ah a lut a, benzene a recover ang. Tui layer chu M sodium salt solution a ni. Downstream M derivative products mamawh ang zelin concentration hnuah direct-a hman theih a ni a, acid hmangin acidified theih a ni bawk a, chu chu a vawt a, dry crystal M a hmu thei bawk.

Sum senso tihtlem dan tur:

BY-product benzothiazole chu reaction vessel-ah an kir leh a. A hmasa ber chu BY-product tar refine a, benzothiazole chu-product hmangin extract la, chutah chuan: reactor-ah dah leh rawh. A pahnihna chu solvent hmanga refined crude M lak let leh a, chemical refining process a tul lo taka hman loh nan leh industrial production atana process awlsam leh tha tak siam a ni. M siam chhuahna process-a BY-product tar chu benzothiazole a ni tlangpui a, chu chu aniline, thioresordiurea leh a dangte a ni. Literature atanga a lan dan chuan benzothiazole hi M. benzothiazole atanga intermediate product a ni a, thioresorthene hian S leh CS2/s te a belh chuan M a siam thei a ni.

Reaction mixture refining:

Solvent extraction hi BY-product benzothiazole recover nan leh M sodium salt tihthianghlim nan hman a ni. Solvent hman chu: monochlorobenzene, o-dichlorobenzene, toluene, benzene, CS2 leh polychloroethane te a ni thei.

Hmuhchhuahna: 1.1.

Extraction neih chhung hian crude M chu tui lum takah zawi zawiin an dah a, surfactant awmnaah nasa takin an hrual a, chutah chuan organic solvent an dah a, emulsification-ah chuan 170℃a thlen thlengin an hrual chhunzawm a ni

Surfactants te hi sodium dodecylbenzenesulfonate, sodium nonylbenzenesulfonate, ammonium dibutyldodecylbenzesesuulfonate, alkali metal salt, sulfonated fatty alcohol, alkali metal soap leh a ang chi te an ni. Ionic surfactant hman a nih chuan, lakchhuah hnuah, solution chanve hmasa ber chu filter-in pH 3-4-ah acidified a ni.

Aniline method hi aniline, CS2 leh S. atanga siam a ni a, CS2 hi kang thei leh puak thei thil hlauhawm chemical a nih avangin hman a harsa hle. Company chuan aniline, n, n'-dimethylformamide leh S. te hman a nih thu a sawi a, Synthesis Accelerator M siam chhuah dan chu raw material atan hman a ni. Reaction temperature chu 200-300℃C a ni a, reaction temperature tha ber chu 225-275℃C a ni a, pressure chu 3.45-4.83 MPa (gauge pressure) a ni a, reaction time chu 12 h vel a ni a, mahse a yield chu a hniam hle a, 66% chauh a ni.

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