Process for preparing polytrimethylene terephthalate

Details Process for preparing polytrimethylene terephthalate Process for preparing polytrimethylene terephthalate

1997-08-15

2000-07-25

Mosley-Boykin, Terressa

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

Synthetic resins

From carboxylic acid or derivative thereof

528176, 528193, 528194, 528272, 528286, 528287, C08G 6302

Patent

active

060937866

ABSTRACT:
Polytrimethylene terephthalate is prepared in a process which includes adding a hindered phenol and an aromatic organophosphite to the polymerization reaction mixture. The process generates a reduced level of acrolein and prepares an improved polyester product compared with processes without the phenol and organophosphite additives.

REFERENCES:
patent: 2465319 (1949-03-01), Whinfield et al.
patent: 3386952 (1968-06-01), Bath et al.
patent: 3642868 (1972-02-01), Dexter
patent: 3644482 (1972-02-01), Dexter et al.
patent: 3676393 (1972-07-01), Piirma
patent: 3681431 (1972-08-01), Dexter et al.
patent: 3821169 (1974-06-01), Duddey
patent: 3951915 (1976-04-01), Keck et al.
patent: 3985705 (1976-10-01), Georgoudis
patent: 3987004 (1976-10-01), Georgoudis
patent: 4011196 (1977-03-01), Carevic et al.
patent: 4056356 (1977-11-01), Gilkey et al.
patent: 4101326 (1978-07-01), Barkey
patent: 4200731 (1980-04-01), Massey et al.
patent: 4330462 (1982-05-01), Keck et al.
patent: 4434276 (1984-02-01), Horlbeck et al.
patent: 4548975 (1985-10-01), Lewis
patent: 4910286 (1990-03-01), White et al.
patent: 5138024 (1992-08-01), Brozek et al.
Weingart, F. et al., "Titanium catalyst in the manufacture of polyethylene terephthalate", Chemical Fibers International (CFI), vol. 46, Apr. 1996.

Affiliated with

Also associated with

Rating

Process for preparing polytrimethylene terephthalate 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 preparing polytrimethylene terephthalate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing polytrimethylene terephthalate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1337230