Polytrimethylene terephthalate resins with improved properties

Details Polytrimethylene terephthalate resins with improved properties Polytrimethylene terephthalate resins with improved properties

2007-05-29

2007-05-29

Boykin, Terressa (Department: 1711)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

C428S221000, C428S364000, C428S370000, C524S081000, C524S115000, C524S116000, C524S123000, C524S126000, C524S127000, C524S128000, C524S174000, C524S204000, C524S284000, C525S056000, C525S437000, C525S444000, C528S495000, C528S496000, C528S503000

Reexamination Certificate

active

10508596

ABSTRACT:
A composition comprising Polytrimethylene terephthalate (PTT) with a reduced emission of acrolein is obtained by contacting Polytrimethylene terephthalate (PTT) resin with an effective amount of a melt stable, organic stabilizing compound. Such PTT resin has an acrolein formation rate at 280° C. of less than 15 ppm/minute. Preferably the residual acrolein content of the PTT resin is less than 10 ppm. The additive organic stabilizing compounds are free from nitrogen atoms. Preferred additive compounds include polyfunctional alkohols, alcoholates, aromatic carboxylic acid anhydrides, carboxylic acids and salts of carboxylic acids. The additive compounds are added to the polymer in molten state and/or to the resin, which is then processed to fibers, filaments, non-wovens, films and/or mouldings.

REFERENCES:
patent: 4670498 (1987-06-01), Furusawa et al.
patent: 5459229 (1995-10-01), Kelsey et al.
patent: 5798433 (1998-08-01), Schmidt et al.
patent: 6093786 (2000-07-01), Kelsey
patent: 6242558 (2001-06-01), Kelsey
patent: 6326456 (2001-12-01), Kelsey et al.
patent: 6509438 (2003-01-01), Kelsey et al.
patent: 6867322 (2005-03-01), Kato et al.
patent: 2002/0010310 (2002-01-01), Allen et al.
patent: 2003/0004244 (2003-01-01), Al-Malaika
patent: 0 943 649 (1999-09-01), None
patent: 1 142 955 (2001-10-01), None
patent: WO 01/81447 (2001-11-01), None
patent: WO 02/051616 (2002-07-01), None

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