Polyester plasticizers
First Claim
1. A polyester having the formula
in which M is the residue of one or more aliphatic monocarboxylic acids containing from 4 to 12 carbon atoms or one or more saturated straight or branched chain monohydric alcohols containing from 4 to 12 carbon atoms, P is the residue of one or more saturated straight or branched chain aliphatic diols containing from 2 to 4 carbon atoms, D is the residue of a mixture of one or more aliphatic dicarboxylic acids containing from 4 to 6 carbon atoms and a proportion above 10 mole % of the total acids used, of one or more aromatic dicarboxylic acids or anhydrides selected from the group consisting of o-phthalic acid, phthalic anhydride and isophthalic acid, L is the residue of 6-hydroxy caproic acid, each of the residues being joined together by ester linkage, residues P, D and L being distributed at random throughout the molecule, a, b and c each having a value greater than 0, the amount of residue of hydroxy acid being from 10 mole % to 90 mole % based on the total number of moles of reactants and the molar ratios of the remaining reactants being chosen so that the average molecular weight of the product is from 500 to 1400, which is prepared by reacting in one-step a mixture of the following components (a) from 10 to 90 mole % of epsilon caprolactone or the corresponding hydroxy acid, (b) a hydroxylic component which comprises one or more saturated straight or branched chain aliphatic diols containing from 2 to 4 carbon atoms, (c) an acidic component which comprises a mixture of one or more aliphatic dicarboxylic acids containing from 4 to 6 carbon atoms and a proportion above 10 mole % of the total acids used of one or more aromatic dicarboxylic acids or anhydrides selected from the group consisting of o-phthalic acid, phthalic anhydride and isophthalic acid, and, (d) one or more aliphatic monocarboxylic acids containing from 4 to 12 carbon atoms or one or more saturated straight or branched chain monohydric alcohols containing from 4 to 12 carbon atoms such that the hydroxylic components are used in stoichiometric amounts or up to 20% excess over the stoichiometric amounts related to the acidic components.
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Accused Products
Abstract
Caprolactone modified polyesters derived from an aliphatic dihydroxy compound and a mixture of aliphatic dicarboxylic acids and a proportion above 10 mol % of the total acids used, of an aromatic dicarboxylic acid and terminated with an alcohol or monocarboxylic acid such that the molecular weight ranges from 500 to 1400 are good plasticizers for polymers, especially polyvinyl chloride.
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Citations
12 Claims
- 1. A polyester having the formula
- space="preserve" listing-type="equation">M(P).sub.a (D).sub.b (L).sub.c M I
in which M is the residue of one or more aliphatic monocarboxylic acids containing from 4 to 12 carbon atoms or one or more saturated straight or branched chain monohydric alcohols containing from 4 to 12 carbon atoms, P is the residue of one or more saturated straight or branched chain aliphatic diols containing from 2 to 4 carbon atoms, D is the residue of a mixture of one or more aliphatic dicarboxylic acids containing from 4 to 6 carbon atoms and a proportion above 10 mole % of the total acids used, of one or more aromatic dicarboxylic acids or anhydrides selected from the group consisting of o-phthalic acid, phthalic anhydride and isophthalic acid, L is the residue of 6-hydroxy caproic acid, each of the residues being joined together by ester linkage, residues P, D and L being distributed at random throughout the molecule, a, b and c each having a value greater than 0, the amount of residue of hydroxy acid being from 10 mole % to 90 mole % based on the total number of moles of reactants and the molar ratios of the remaining reactants being chosen so that the average molecular weight of the product is from 500 to 1400, which is prepared by reacting in one-step a mixture of the following components (a) from 10 to 90 mole % of epsilon caprolactone or the corresponding hydroxy acid, (b) a hydroxylic component which comprises one or more saturated straight or branched chain aliphatic diols containing from 2 to 4 carbon atoms, (c) an acidic component which comprises a mixture of one or more aliphatic dicarboxylic acids containing from 4 to 6 carbon atoms and a proportion above 10 mole % of the total acids used of one or more aromatic dicarboxylic acids or anhydrides selected from the group consisting of o-phthalic acid, phthalic anhydride and isophthalic acid, and, (d) one or more aliphatic monocarboxylic acids containing from 4 to 12 carbon atoms or one or more saturated straight or branched chain monohydric alcohols containing from 4 to 12 carbon atoms such that the hydroxylic components are used in stoichiometric amounts or up to 20% excess over the stoichiometric amounts related to the acidic components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
Specification
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- Resources
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Current AssigneeFMC Corporation
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Original AssigneeCiba-Geigy AG (Novartis Ag)
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InventorsLamb, Frank
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Primary Examiner(s)Lieberman, Allan
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Application NumberUS05/774,727Time in Patent Office652 DaysField of Search260/475 P, 260/31.6, 260/404.8, 560/90US Class Current524/296CPC Class CodesC08G 63/60 derived from the reaction o...C08L 2666/14 Macromolecular compounds ac...C08L 27/06 Homopolymers or copolymers ...C08L 67/02 Polyesters derived from dic...C08L 67/04 Polyesters derived from hyd...
