C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/688 (2006.01) C08G 63/21 (2006.01) C08G 63/685 (2006.01) C08G 63/78 (2006.01)
Patent
CA 2565862
A method for incorporating a UV light absorbing compound into a polyester prepared using direct esterification of reactants comprising a dicarboxylic acid and a diol. The method comprises reacting the reactants in an esterifying reactor under conditions sufficient to form an esterified product including at least one of an ester, an oligomer, or mixture having an ester and a mixture of low molecular weight polyester; polymerizing the esterified product in a polycondensation reactor to form a polyester; and adding the UV absorbing compound to the esterified products when at least 50% of the carboxy groups initially present in the reactants have been esterified to obtain a yield of UV absorbing compound incorporated into the polyester of greater than 25%. Articles utilizing the UV protected polyester prepared by the method of the invention are additional disclosed.
Procédé d'intégration d'un composé absorbant la lumière UV dans un polyester fabriquE par estErification directe de rEactifs sElectionnEs parmi un acide dicarboxylique et un diol. Le procEdE consiste A mettre en rEaction les rEactifs dans un rEacteur d'estErification dans des conditions suffisantes pour former un produit estErifiE comportant au moins un ElEment choisi entre un ester, un oligomEre ou bien un mElange comportant un ester et un mElange de polyester de faible poids molEculaire; A polymEriser le produit estErifiE dans un rEacteur de polycondensation pour former un polyester; et A ajouter le composE absorbant les UV aux produits estErifiEs lorsque l'on a estErifiE au moins 50 % des groupes carboxy initialement prEsents dans les rEactifs, pour obtenir un rendement de composE absorbant les UV incorporE au polyester de plus de 25 %. Il est Egalement prEvu des articles utilisant le polyester protEgE contre les UV fabriquE selon le procEdE de l'invention.
Howell Earl Edmondson Jr.
Murdaugh Perry Michael
Pearson Jason Clay
Weaver Max Allen
Wells Cory Lee
Eastman Chemical Company
Gowling Lafleur Henderson Llp
Grupo Petrotemex S.a. de C.v.
LandOfFree
Process for adding methine uv light absorbers to pet... 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 adding methine uv light absorbers to pet..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for adding methine uv light absorbers to pet... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1693781