The life-size clay model is then used as a three-dimensional reference for the creation of the smaller clay image, which is perfected in polysulfide rubber
and plaster, among a series of other processes, to refine the face and capture even the smallest smile line, scar or forehead wrinkle.
On the second diagnostic appointment, boarder molding with green sticks modeling compound (Kerr Corporation) and impressions of maxilla arch was made using Polysulfide rubber
material (COE-FLEXA Lead-Free Polysulfide Impression Material, GC America).
Set up with the intention to serve increasing demand in the region for speciality elastomers such as thermoplastics, protein resilin and polysulfide rubber
, the plant is expected to produce approximately 110,000 tons of rubber per year, (using licensed ExxonMobil technology).
Low molecular weight liquid polysulfide rubber
(JLY121: SH% - 6.2-7.5%, Mn = 1000 [+ or -] 200, with 2% trithiol; JLY124: SH% - 1.6-2.0%, Mn = 4000 [+ or -] 200, with 2% trithiol; JLY155: SH% - 1.0-1.4%, Mn = 5000 [+ or -] 400, with 0.5% trithiol) were obtained from Jingxi Research Institute of Chemical Industry, China.
They have also studied the chemorheology of crosslinked monodisperse particle-filled polysulfide rubber