Para Tertiary Butyl Phenol

 

 

PARA TERTIARY BUTYL PHENOL (P-Tert-Butyl Phenol) (PTBP)
UN Code: 3077
CAS Nr . 98-54-4
HS Code: 2907199090

 

 

1) Acidity ntawm phenolic hydroxyl pawg:Exhibits cov yam ntxwv dav dav ntawm phenolic tebchaw. Raws li cov kua qaub tsis muaj zog, nws tuaj yeem cuam tshuam nrog cov hauv paus tsim cov ntsev (phenolate anions).

 

2) Electrophilic hloov cov tshuaj tiv thaiv:Vim lub tert-butyl pawg yog ib qho muaj zog electron- pab pawg pub dawb, nws ua rau cov electron ceev ntawm lub nplhaib benzene (tshwj xeeb tshaj yog nyob rau ntawm txoj hauj lwm ortho txheeb ze rau pawg hydroxyl), ua rau nws muaj zog ntau dua hauv cov tshuaj electrophilic hloov pauv (xws li alkylation, condensation) dua li phenol nws tus kheej.

 

3) Spatial steric hindrance:Cov tert-butyl pab pawg muaj qhov loj me, uas muaj qhov cuam tshuam loj heev rau kev cuam tshuam ntawm kev cuam tshuam ntawm lwm txoj haujlwm ntawm lub nplhaib, ua rau qee qhov kev cuam tshuam (xws li ortho- hloov pauv) nyuaj dua.

 

4) Antioxidant muaj peev xwm:Cov qauv phenolic endows nws nrog qee yam antioxidant zog.

 

 

A. Kev lag luam yas

1) Phenolic Resin Modifier: Qhov no yog nws txoj kev siv ntau tshaj plaws. Ntxiv rau cov txheej txheem synthesis ntawm phenolic resin tuaj yeem txhim kho cov roj solubility thiab yooj ntawm cov resin. Nws tuaj yeem txo qhov brittleness ntawm cov resin thiab txhim kho nws cov kev ua tau zoo.

 

2.) Tert-butylphenol yog siv rau hauv kev tsim cov kua roj vanish tshwj xeeb, insulating txheej thiab cov ntaub ntawv laminated.

 

3) Synthesis of tert-butylphenol-raws li resins: Los ntawm kev cuam tshuam ncaj qha nrog formaldehyde, chav kawm ntawm cov roj tseem ceeb -soluble phenolic resins tuaj yeem tsim tau. Cov resins no tsuas yog siv rau hauv: cov roj hmab vulcanization cov neeg ua haujlwm (tshwj xeeb tshaj yog tsim rau cov roj hmab butyl thiab cov roj hmab ntuj), nrog rau cov cua sov zoo thiab kev laus ua haujlwm. Adhesive thickening resins rau siab-sensitive adhesives (xws li daim ntawv lo thiab daim kab xev).

 

4).

Toluene-benzyl phenol yog ib qho tseem ceeb pib cov khoom siv rau kev tsim cov tshuaj tiv thaiv phenolic antioxidants (xws li antioxidant 1010, 1076, 1135). Cov tshuaj antioxidants no tau siv dav hauv cov yas (polyolefins), roj hmab, roj lubricating thiab roj roj los tiv thaiv thermal oxidation degradation.

 

5.) Tert-butylphenol kuj yog cov khoom siv raw rau surfactants: Los ntawm reacting nrog ethylene oxide, nonionic surfactants tuaj yeem tsim tau, thiab cov surfactants no tau siv hauv kev lag luam xws li emulsification thiab dispersion.

 

6.) Tert-butylphenol kuj tseem siv tau los ua cov tshuaj tsw qab thiab tshuaj tua kab. Nws ua haujlwm ua haujlwm nruab nrab hauv kev sib txuas ntawm qee yam musk- zoo li cov tshuaj tsw qab (xws li musk xylene) thiab ib qho nruab nrab rau cov tshuaj tua kab zoo heev (xws li qee cov tshuaj tua kab pyrethroid).

 

7.) Tert-butylphenol kuj tseem siv rau hauv kev tsim cov ultraviolet absorbers, kub stabilizers rau polyvinyl chloride (xws li cov precursors ntawm tej yam organotin stabilizers), thiab lwm yam khoom.