Method for the addition of vulcanized waste rubber to virgin rub

Details Method for the addition of vulcanized waste rubber to virgin rub Method for the addition of vulcanized waste rubber to virgin rub

1995-09-14

1997-01-28

Krass, Frederick

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

Synthetic resins

Process of treating scrap or waste product containing solid...

521 45, 435130, 435166, 435167, 435262, C12M 110, C12R 107

Patent

active

055978517

ABSTRACT:
The invention is a method of using enzymes from thiophyllic microbes for selectively breaking the sulfur rubber cross-link bonds in vulcanized rubber. The process is halted at the sulfoxide or sulfone step so that a devulcanized layer is reactive with virgin rubber.

REFERENCES:
patent: 5275948 (1994-01-01), Straube et al.
patent: 5344778 (1994-09-01), Kilbane, II

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