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4 protocols using potassium carbonate k2co3

1

Synthesis of Epoxy Resin Precursors

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Diphenolic
acid [DPA, Saen
Chemical Technology (Shanghai) Co., Ltd.], 1,4-dibromo butane (DBB,
Shanghai Aladdin Biochemical Technology Co., Ltd.), N,N-dimethylformamide (DMF, Sinopharm Chemical Reagent
Co., Ltd.), potassium carbonate (K2CO3, Sinopharm
Chemical Reagent Co., Ltd.), acetone (Nanjing Chemical Reagent Co.,
Ltd.), ethyl acetate (Shanghai Titan Scientific Co., Ltd.), anhydrous
magnesium sulfate (MgSO4, Shanghai Macklin Biochemical
Co., Ltd.), epichlorohydrin (ECH, Shanghai Lingfeng Chemical Reagent
Co., Ltd.), benzyltriethylammonium chloride (TEBAC, Shanghai Aladdin
Biochemical Technology Co., Ltd.) sodium hydroxide (NaOH, Shanghai
Aladdin Biochemical Technology Co., Ltd.), calcium oxide (CaO, Sinopharm
Chemical Reagent Co., Ltd.), methyl tetrahydrophthalic anhydride (MTHPA,
Chengdu Ai Keda Chemical Reagent Co., Ltd.), 2,4,6-tris(dimethylaminomethyl)phenol
(TAP, Saen Chemical Technology (Shanghai) Co., Ltd.), and ethylene
glycol diglycidyl ether [EGDGE, epoxy value: 0.7 mol (100 g)−1, Shanghai Rin Technology Development Co., Ltd.] were used as received
without any further purification.
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2

PVC Synthesis via Polyurethane Precursors

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All reagents were used as received. PVC was supplied from rhawn.cn (K value 59–55). Potassium carbonate (K2CO3) (AR) and tetrahydrofuran (THF) (AR) were obtained from Sinopharm Chemical Reagent Co., Ltd (China). Diethanolamine (DEA) (AR), hexamethylene diisocyanate (HDI) (>99%), hexamethylene diisocyanate trimer (THDI) (>99%), isophorone diisocyanate (IPDI) (>99%), castor oil (AR), dibutyltin dilaurate (AR) and petroleum ether were offered by Shanghai Macklin Biochemical Co., Ltd (China).
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3

Flame-Retardant LDPE/EVA Composites

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LDPE was purchased from LG Chem, Ltd. (Yeoui-daero Yeongdeungpo-gu Seoul, Seoul, Korea), and its number-average molecular weight of LDPE was about 150,000–250,000. Poly(ethylene-co-vinyl acetate) (VA content: ~15%) was obtained from Shanghai PUEN Chemical Co., Ltd. (Shanghai, China). Mg(OH)2 and Al(OH)3 particles (industrial grade) were purchased from Zibo Chenyu Fine Powder Co., Ltd., (Shandong, China). Hexachlorocyclotriphosphazene (99%) was obtained from Wuhan Hezhong Bio-chemical Manufacture Co., Ltd., (Wuhan, China). 4-Cyanophenol (98%) was supplied by Shanghai Aladdin Biochemical Technology Co., Ltd., China. Potassium carbonate (K2CO3, 99%) was obtained from Sinopharm Chemical Reagent Co., Ltd., (Shanghai, China). All other chemicals and reagents were from commercial resources and used without purification.
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4

PVC-based Polymer Synthesis Protocol

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All reagents were used
as received. PVC was supplied from rhawn.cn (K value
59-55). 4-Aminothiophenol was purchased from Sigma-Aldrich Co., Ltd.
(China). Ra, Pa, Oa, methanol, and benzyltriethylammonium chloride
(TEBAC) were offered by Shanghai Macklin Biochemical Co., Ltd. (China).
1,3,5-TGIC was bought from Shanghai Aladdin Biochemical Technology
Co., Ltd. (China). Potassium carbonate (K2CO3) and tetrahydrofuran (THF) were obtained from Sinopharm Chemical
Reagent Co., Ltd. (China).
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