Synthesis of organic polysulfide polymers

Details Synthesis of organic polysulfide polymers Synthesis of organic polysulfide polymers

1994-11-16

1996-10-15

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528374, 528375, 528378, 528379, 528390, 524722, 524765, 524767, 568 21, 568 23, 568 25, 568 26, C08K 516

Patent

active

055655173

ABSTRACT:
A process for preparing an organic polysulfide polymer, such as polyethylene trisulfide, is provided which comprises contacting a dimercaptan such as 1,2-ethanedithiol with elemental sulfur using a basic catalyst wherein the dimercaptan, elemental sulfur, and basic catalyst are each present in an effective amount to effect the preparation of the organic polysulfide polymer. A process for controlling the molecular weight of an organic polysulfide polymer is also provided which comprises contacting a mercaptan with a dimercaptan and sulfur, in the presence of a basic catalyst, under conditions sufficient to prepare an organic polysulfide polymer.

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