Terephthalic polyester composition and its use as soil...

C - Chemistry – Metallurgy – 11 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C11D 3/37 (2006.01) C08G 63/672 (2006.01) C08G 81/00 (2006.01) C08L 67/02 (2006.01) C08G 63/83 (2006.01)

Patent

CA 2337815

The invention concerns a terephthalic polyester composition (CPT), comprising in mixture: an ethyleneterephthalate homooligomer (PET¿1?) essentially containing recurrent terephthalate oxyethylene (TE) units; and a block terephthalate copolymer (PET¿2?/TE-POE) containing at least a polyethyleneterephthalate (PET¿2?) sequence; and at least a terephthalate polyoxyethylene (TE-POE) sequence whereof the POE unit has a molecular mass of 1500 to 4000 in number; said composition (CPT) being characterised in that: the quantity of (TE) units of (PET¿1?) represents not more than 10 % of the total number of (TE) units present in said composition (CPT); the weight quantity of (TE) units present in the composition (CPT) represents at least 10 % of (TE) units present in the composition (CPT); the quantity by weight of mono(oxyethyleneoxy) radicals (OEO) represents at least 1.3 % of the weight of the composition (CPT), said radicals (OEO) belonging to the aromatic diester oxyethylene groups (ODA) of formula: -A-C(O)-O-CH¿2?-CH¿2?-O-C(O)-A- present in all the (PET¿1?) and (PET¿2?) sequences; and the molar mass by weight of block terephthalic copolymer (PET¿2?/TE-POE) is at least 30000. Said composition is prepared by transesterification of a polyethylene terephthalate and a polyethylene glycol in the presence of magnesium oxide as catalyst. The invention also concerns the use of said composition as soil release agent in detergent formulations for washing textiles.

Composition polyester téréphtalique (CPT) comprenant, en mélange un homooligomère éthylènetéréphtalate (PET1) comprenant essentiellement des motifs répétitifs oxyéthylène téréphtalates (TE); et un copolymère téréphtalique séquencé (PET2/TE-POE) comprenant au moins une séquence polyéthylènetéréphtalate (PET2), et au moins une séquence polyoxyéthylène téréphtalate (TE-POE) dont l'unité POE présente une masse moléculaire en nombre de 1500 a 4000, ladite composition (CPT) étant caractérisée en ce que la quantité de motifs (TE) de (PET1) ne représente pas plus de 10 % de l'ensemble des motifs (TE) présents dans la composition (CPT); la quantité pondérale de l'ensemble des motifs (TE) présents dans la composition (CPT) représente au moins 11 % du poids de la composition (CPT); la quantité pondérale de restes mono(oxyéthylèneoxy) (OEO) représente au moins 1,3 % du poids de la composition (CPT), lesdits restes (OEO) appartenant aux groupes oxyéthylène diester aromatiques (ODA) de formule -A-C(O)-O-CH2-CH2-O-C(O)-A- présents dans l'ensemble des séquences (PET1) et (PET2); et en ce que la masse molaire en poids du copolymère téréphtalique séquencé (PET2/TE-POE) est d'au moins 30000. Utilisation de cette composition en tant qu'agent antisalissure dans des formulations détergentes pour le lavage d'articles textiles.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Terephthalic polyester composition and its use as soil... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Terephthalic polyester composition and its use as soil..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Terephthalic polyester composition and its use as soil... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1969422

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.