Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Patent
1997-02-03
1999-03-23
Short, Patricia A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
525444, 5283083, C08J 1104
Patent
active
058860584
ABSTRACT:
The present invention describes a process of making strap using both post consumer and non-post consumer PET of wide distribution intrinsic viscosity (IV) through direct solid state polymerization in a flaked state to produce PET with increased, heterogenous IV suitable for high performance strap extrusion. The process increases the IV of post-consumer resins, consisting principally of polyethylene terephthalate (PET), by chopping the post-consumer plastic into flakes and chunks, rolling the flakes and chunks, preheating the flakes, and further heating the flakes and chunks in an atmosphere of hot nitrogen gas, thereby increasing the intrinsic viscosity. PET polymers having increased viscosities according to the present invention provide a polymer useful in manufacturing high performance strap.
REFERENCES:
patent: 3767601 (1973-10-01), Knox
patent: 4022863 (1977-05-01), Karass
Article--Titled: The Role of Additives in the solid State Polycondensation of Recycled Polyethylene Terephthalate (PET) in ARC'96 Technology The Spark in Recycling Publication, Nov. 7,8, 1996--Authors--Ulrich B. Steiner and Camille Borer.
Adams Karl G.
Enriquez Manuel C.
Erden Donald Van
Nelson James P.
Vadnais Gary L.
Illinois Tool Works Inc.
Short Patricia A.
LandOfFree
Inline solid state polymerization of pet flakes for manufacturin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inline solid state polymerization of pet flakes for manufacturin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inline solid state polymerization of pet flakes for manufacturin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2126000