Synthesis of High cis-Polybutadiene in Styrene Solution with Neodymium-Based Catalysts: Towards the Preparation of HIPS and ABS via In Situ Bulk Polymerization

Table 3

Recipes for in situ bulk polymerizations to obtain HIPS using the run R12 and different properties obtained.

Sample	(wt.%)	(wt.%)	(%)	(%)	(g/mol)		Impact strengt (J/m)
HIPS-1	7	0	69.0	10.5	71000	2.31	21
HIPS-2	7	5	64.5	11.4	69000	2.62	17

Stage 1-mass (s1-m): = 93 wt-%; = 0.1 wt-%; = 90°C; rpm = 40.
Stage 2-mass (s2-m): = 0.1 wt-%; = 150°C; = 15 h.
  corresponding to run R12.
homopolymer with = 66000 g/mol added at the beginning of the in situ bulk polymerizations.
  degree and gel content were obtained by gravimetry.
  by size exclusion chromatography (SEC) with polystyrene standards.
  by Izod impact notched.