Process for controlled polymerization of a mixed polymer

Details Process for controlled polymerization of a mixed polymer Process for controlled polymerization of a mixed polymer

2007-11-20

2007-11-20

Cain, Edward J. (Department: 1714)

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

Synthetic resins

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

C521S048500

Reexamination Certificate

active

10868878

ABSTRACT:
The present invention provides a process for the preparation of high molecular weight crystalline Polyethyleneterephthalate (PET) using up to 50% of Post consumer recycled PET flakes along with Pure Terephthalic Acid (PTA), Isophthalic Acid (IPA) and Mono Ethylene Glycol (MEG) as a virgin raw material, in the presence of a combination of catalysts and additives to obtain an intermediate prepolymer heel having a low degree of polymerization further subjecting to autoclaving to yield an amorphous melt and followed by solid state polymerization.

REFERENCES:
patent: 4020049 (1977-04-01), Rinehart
patent: 4118187 (1978-10-01), Sidebotham et al.
patent: 4368274 (1983-01-01), Scott
patent: 4609680 (1986-09-01), Fujita et al.
patent: 5223544 (1993-06-01), Burkett et al.
patent: 5539078 (1996-07-01), Burkett et al.
patent: 5554657 (1996-09-01), Brownscombe et al.
patent: 5594092 (1997-01-01), Burkett et al.
patent: 5612423 (1997-03-01), Burkett et al.
patent: 5635584 (1997-06-01), Ekart et al.
patent: 5874515 (1999-02-01), Huang et al.
patent: 5876644 (1999-03-01), Nichols et al.
patent: 5895807 (1999-04-01), Galko et al.
patent: 6162837 (2000-12-01), Gerking et al.
patent: 6262294 (2001-07-01), Sako et al.
patent: 6350851 (2002-02-01), Inada et al.
patent: 6410607 (2002-06-01), Ekart et al.
patent: 6436322 (2002-08-01), Fredl
patent: 0 926 178 (1999-06-01), None
patent: 1153070 (2002-06-01), None
patent: 0966344 (2002-08-01), None
patent: 2001-316327 (2001-11-01), None
patent: 517832 (2001-03-01), None
patent: WO 98/40194 (1998-09-01), None
patent: WO 00/47659 (2000-08-01), None
patent: WO 01/21373 (2001-03-01), None

Affiliated with

Also associated with

Rating

Process for controlled polymerization of a mixed polymer 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 controlled polymerization of a mixed polymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for controlled polymerization of a mixed polymer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3862286