GR-S 65, a Low Water Absorption Copolymer

Low Water Absorption Copolymers - Nonstaining Superior Processing Type

“…Direct solution in the latex and stabilized latex into a water solution of 0.25% sulfuric acid and 0.05% glue (no brine is used). From this point on, the process differs considerably from that of the standard plant de-scribed in the paper on GR-S-65 (1). The next sequence of operations is: Dewatering (on Dorr separator) to about 50:50 water to polymer ratio.…”

Important Quality Factors in Styrene-Butadiene Rubber (SBR) as Affected by Stabilizers and Flocculation Techniques.

“…Glasgow' and Vila (5) demonstrated that SBR flocculated with salt and sulfuric acid exhibits poorer heat stability than polymer flocculated with sulfuric acid alone. The straight acid coagulation method is made commercially practical by using a small quantity of glue in the acid solution (9,10). Alum-coagulated polymers also show improved heat stability when compared to polymer coagulated by the conventional salt-acid method (7,5,15,17,22).…”