Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Reexamination Certificate
2006-10-03
2006-10-03
Jagannathan, Vasu (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
C521S040000, C521S040500, C241S014000, C241S024120, C241S024180, C241S024190, C241S024210, C083S027000
Reexamination Certificate
active
07115671
ABSTRACT:
The invention relates to a process for recovering monomeric units of a nylon from carpet material. The carpet material includes fibres containing nylon bound to a backing containing one or more non-nylon components. The carpet material contains between 15 and 35 wt. % of the nylon. The process includes:a) mechanically separating the carpet material into an enriched carpet mixture containing between 35 and 55 wt. % of said nylon and into a depleted carpet mixture having a lower content of nylon than the carpet material; andb) exposing the enriched carpet mixture to conditions at which depolymerization of the nylon is effected.
REFERENCES:
patent: 5062949 (1991-11-01), Hausmann
patent: 5169870 (1992-12-01), Corbin et al.
patent: 5304576 (1994-04-01), Martinez
patent: 5457197 (1995-10-01), Sifniades et al.
patent: 5518188 (1996-05-01), Sharer
patent: 5535945 (1996-07-01), Sferrazza et al.
patent: 5990306 (1999-11-01), Mayer et al.
patent: 6111099 (2000-08-01), Frentzen et al.
patent: 522 235 (1993-01-01), None
patent: 728 565 (1996-08-01), None
patent: 94 06763 (1994-03-01), None
patent: 97 29713 (1997-06-01), None
“PA 6-Recycling zu Caprolactam aus textilen Bodenbelagen”, Chemiefasert/Textilindustrie, DE, Deutscher Fachverlag GMBH. Frankfurt AM, Main., vol. 42, No. 6, Jun. 1992, p. 497.
Courage Antonius J. F. M.
Houben Marco J. A.
Mertens Mathieu H. M.
Raets Leonardus J. G.
DSM IP Assets B.V.
Jagannathan Vasu
Mayer Brown Rowe & Maw LLP
Ronesi Vickey
LandOfFree
Process for recovering monomeric units of a nylon from whole... 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 recovering monomeric units of a nylon from whole..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for recovering monomeric units of a nylon from whole... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3718552