Process for recycling cured polysulfide sealants

Details Process for recycling cured polysulfide sealants Process for recycling cured polysulfide sealants

1993-04-27

1994-09-20

Richter, Johann

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

568 21, C07C32114, C07C32112

Patent

active

053490916

ABSTRACT:
Solid waste materials comprising oxidatively-cured, solid polysulfide sealants containing spent oxidant, fillers, plasticizers, and other formulating aids are reverted to a liquid sealant comprising mercaptan-terminated polysulfides by reducing them with a liquid mercaptan-terminated polysulfide at temperatures ranging from about 50.degree. to about 110.degree. C. Upon the addition of fresh curing agent and recuring, the reclaimed sealant has satisfactory tensile strength and elongation properties.

REFERENCES:
patent: 2415449 (1947-02-01), Sverdrup et al.
patent: 3770678 (1973-11-01), Paul, 3rd.
patent: 4425389 (1984-01-01), Schollhorn et al.
patent: 4675126 (1987-06-01), Unger et al.

Affiliated with

Also associated with

Rating

Process for recycling cured polysulfide sealants does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for recycling cured polysulfide sealants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for recycling cured polysulfide sealants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2430019