2,2-dibromoethenylbenzene

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 147.90 g. (0.431 mole) of 2-bromoethyl-dibromobenzene in 250 ml. of methylene chloride was stirred for 7 ks (2 hours) at 5 Hz (300 rpm) at 313 K. (40° C.) with 150 g (2.25 mole) of 60 percent sodium hydroxide solution and 3.12 g. (0.0124 mole) of triethylpentyl ammonium bromide. The product was washed with three 500-ml portions of water, dried over calcium sulfate (Drierite), and stripped of solvent in a rotary evaporator at a bath temperature of 323 K. (50° C.). The yield of product was 106.97 g. (77.2 percent of theory). GC analysis showed 27.1 percent of the desired ar-dibromostyrene, the remainder being largely unreacted starting material. (40° C.) The product was washed with three 500-ml portions of water dried over calcium sulfate (Drierite) stripped of solvent in a rotary evaporator at a bath temperature of 323 K (50° C.)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A series of emulsion polymerizations of dibromostyrene (DBS)/2-ethylhexyl acrylate (2-EHA) were carried out in 8 oz. bottles. All the ingredients (122.50 or 180 parts by weight deionized water, 3 parts sodium dodecyl sulfate, 0.3 parts potassium persulfate, 0.2 parts t-dodecyl mercaptan and 100 parts total monomers in the ratio desired in the polymer) were charged into 8 oz. bottles and flushed well with nitrogen, and then reacted at 50° C. to about 45.8 or 36.5% solids in 15 hr. The whole bottle was cooled to room temperature and 3 parts deionized water and 0.18 parts 50% H2O2 added, followed by agitation for 20 minutes. The results of these preparations are set forth in Table I. The latices in Examples 1 and 2 perform well in a variety of coating applications, and display improved flame retardancy, while the latices in Examples 3 through 5 give very soft and tacky coatings. were charged into 8 oz. bottles flushed well with nitrogen reacted at 50° C. to about 45.8 or 36.5% solids in 15 hr added The results of these preparations improved flame retardancy while the latices in Examples 3 through 5 give very soft

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 147.90 g. (0.431 mole) of 2-bromoethyldibromobenzene in 250 ml. of methylene chloride was stirred for 7 ks (2 hours) at 5 Hz (300 rpm) at 313 K. (40° C.) with 150 g (2.25 mole) of 60 percent sodium hydroxide solution and 3.12 g. (0.0124 mole) of triethylpentyl ammonium bromide. The product was washed with three 500-ml portions of water, dried over calcium sulfate (Drierite), and stripped of solvent in a rotary evaporator at a bath temperature of 323 K. (50° C.). The yield of product was 106.97 g. (77.2 per cent of theory). GC analysis showed 27.1 percent of the desired ar-dibromostyrene, the remainder being largely unreacted starting material. (40° C.) The product was washed with three 500-ml portions of water dried over calcium sulfate (Drierite) stripped of solvent in a rotary evaporator at a bath temperature of 323 K (50° C.)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A series of emulsion polymerizations of dibromostyrene (DBS)/2-ethylhexyl acrylate (2-EHA) were carried out in 8 oz. bottles. All the ingredients (122.50 or 180 parts by weight deionized water, 3 parts sodium dodecyl sulfate, 0.3 parts potassium persulfate, 0.2 parts t-dodecyl mercaptan and 100 parts total monomers in the ratio desired in the polymer) were charged into 8 oz. bottles and flushes well with nitrogen, and then reacted at 50° C. to about 45.8 or 36.5% solids in 15 hr. The whole bottle was cooled to room temperature and 3 parts deionized water and 0.18 parts 50% H2O2 added, followed by agitation for 20 minutes. The results of these preparations are set forth in Table I. The latices in Examples 1 and 2 perform well in a variety of coating applications, and display improved flame retardancy, while the latices in Examples 3 through 5 give very soft and tacky coatings. were charged into 8 oz. bottles and flushes well with nitrogen added The results of these preparations improved flame retardancy while the latices in Examples 3 through 5 give very soft

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 147.90 g. (0.431 mole) of 2-bromoethyl-dibromobenzene in 250 ml. of methylene chloride was stirred for 7 ks (2 hours) at 5 Hz (300 rpm) at 313 K. (40° C.) with 150 g (2.25 mole) of 60 percent sodium hydroxide solution and 3.12 g. (0.0124 mole) of triethylpentyl ammonium bromide. The product was washed with three 500-ml portions of water, dried over calcium sulfate (Drierite), and stripped of solvent in a rotary evaporator at a bath temperature of 323 K. (50° C.). The yield of product was 106.97 g. (77.2 percent of theory). GC analysis showed 27.1 percent of the desired ar-dibromostyrene, the remainder being largely unreacted starting material. (40° C.) The product was washed with three 500-ml portions of water dried over calcium sulfate (Drierite) stripped of solvent in a rotary evaporator at a bath temperature of 323 K (50° C.)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A series of emulsion polymerizations of dibromostyrene (DBS)/2-ethylhexyl acrylate (2-EHA) were carried out in 8 oz. bottles. All the ingredients (122.50 or 180 parts by weight deionized water, 3 parts sodium dodecyl sulfate, 0.3 parts potassium persulfate, 0.2 parts t-dodecyl mercaptan and 100 parts total monomers in the ratio desired in the polymer) were charged into 8 oz. bottles and flushed well with nitrogen, and then reacted at 50° C. to about 45.8 or 36.5% solids in 15 hr. The whole bottle was cooled to room temperature and 3 parts deionized water and 0.18 parts 50% H2O2 added, followed by agitation for 20 minutes. The results of these preparations are set forth in Table I. The latices in Examples 1 and 2 perform well in a variety of coating applications, and display improved flame retardancy, while the latices in Examples 3 through 5 give very soft and tacky coatings. were charged into 8 oz. bottles flushed well with nitrogen reacted at 50° C. to about 45.8 or 36.5% solids in 15 hr added The results of these preparations improved flame retardancy while the latices in Examples 3 through 5 give very soft