Resins

RESINS INTO SOLVENT

Description
OBJECT: Significantly reduce time required for “cold cutting” resin flakes and chips into solvent via grinding/dispersing/dissolving.
PROBLEM: Customer was employing slow agitator for Product A and a “sawtooth” blade for Product B.

Product A: Disperse/dissolve 3/8″ dia. resin pellets and polyisobutylene (Shell “Vistanex”) into MEK (methyl ethyl ketone) for adhesive manufacture.
The initial CJ-4B lab mixer test was run in the up-mode only. The 3/8″ pellets were drawn up, shattered and dispersed. The amorphous Vistanex was “puddled” in and dispersed.
A subsequent demonstrator Model C-2 mixer in a 55 gallon drum was handled differently. Vistanex was placed in the bottom with solvent and the mixer run down-mode until dissolved. Then it was run upward to disperse the pellets.

Product B: Shatter/disperse/dissolve resin “flakes” (3/4″ to 1″ sq. x 1/8″ thick) in Toluene. The Model CJ-4B run in the up-mode only. The “flakes” were dissolved almost immediately.

RESULTS:
Product A, 300 gallon batch time was reduced from 3 days to 4 hours.
Product B, 1,000 gallon batch time was reduced from 1 day to 2 hours.

AB MIXER:
Product A, 300 gallon C-3-2 with 20 HP explosion proof motor.
Product B, 1,000 gallon C-5-2 with 25 HP explosion proof motor.

EQUIPMENT REPLACED: Agitator and “Sawtooth” blade.

Product Lines Used in this Case