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US 6,231,976 B1Granted
Copolyester binder fibers
AssigneeEastman Chemical Company
InventorsLeron R. Dean, William A. Haile, Richard L. McConnell
Life of this patent
Estimating the term…
Abstract
The invention relates to fibers, particularly binder fibers, made from copolyesters and the copolyesters themselves. The copolyesters of the invention are generally formed from a glycol component containing 1,3- or 1,4-cyclohexanedimethanol and ethylene glycol and at least one dicarboxylic acid component. Such copolyesters may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile and industrial yarns, and composites.
Claims42
A fiber comprising a copolyester formed from the reaction product of:
- a glycol component with a dicarboxylic acid component,
- wherein the glycol component comprises 1,3- or 1,4-cyclohexanedimethanol in an amount ranging from about 5 to about 60 mole % and ethylene glycol in an amount ranging from about 40 to about 95 mole %,
- wherein the dicarboxylic acid component comprises at least about 50 mole % of a dicarboxylic acid component which is an acid, anhydride, acid chloride or ester of an aromatic dicarboxylic acid containing from about 8 to about 14 carbon atoms, an aliphatic dicarboxylic acid containing from about 4 to about 12 carbon atoms, a cycloaliphatic dicarboxylic acid having about 8 to about 12 carbon atoms or mixtures thereof, and
- wherein the copolyester has an I.V. of between about 0.36 to 0.58.
1 more element
A binder fiber comprising a copolyester formed from the reaction product of:
- a glycol component with a dicarboxylic acid component and up to 20 mole % of an amine compound,
- wherein the glycol component comprises 1,3- or 1,4-cyclohexanedimethanol in an amount ranging from about 5 to about 60 mole %, ethylene glycol in an amount ranging from about 40 to about 95 mole %,
- wherein the dicarboxylic acid component comprises at least about 50 mole % of a dicarboxylic acid component which is an acid, anhydride, acid chloride or ester of an aromatic dicarboxylic acid containing from about 8 to about 14 carbon atoms, an aliphatic dicarboxylic acid containing from about 4 to about 12 carbon atoms, a cycloaliphatic dicarboxylic acid having about 8 to about 12 carbon atoms or mixtures thereof, and
- wherein the copolyester has an I.V. of between about 0.36 to 0.58.
1 more element
A fiber comprising a copolyester formed from the reaction product of:
- a glycol component with a dicarboxylic acid component,
- wherein the glycol component comprises 1,3- or 1,4-cyclohexanedimethanol in an amount ranging from about 5 to 60 mole % and ethylene glycol in an amount ranging from about 40 to about 95 mole %,
- wherein the dicarboxylic acid component comprises isophthalic acid or an anhydride, acid chloride or ester thereof in an amount ranging from at least 10 mole % to about 50 mole % and at least about 50 mole % of a dicarboxylic acid component which is an acid, anhydride, acid chloride or ester of an aromatic dicarboxylic acid containing from about 8 to about 14 carbon atoms, an aliphatic dicarboxylic acid containing from about 4 to about 12 carbon atoms, a cycloaliphatic dicarboxylic acid having about 8 to about 12 carbon atoms or mixtures thereof.
A binder fiber comprising a copolyester formed from the reaction product of:
- a glycol component with a dicarboxylic acid component and up to about 20 mole % of an amine compound,
- wherein the glycol component comprises 1,3- or 1,4-cyclohexanedimethanol in an amount ranging from about 5 to 60 mole %, ethylene glycol in an amount ranging from about 40 to about 95 mole %,
- wherein the dicarboxylic acid component comprises isophthalic acid or an anhydride, acid chloride or ester thereof in an amount ranging from at least 10 mole % to about 50 mole % and at least about 50 mole % of a dicarboxylic acid component which is an acid, anhydride, acid chloride or ester of an aromatic dicarboxylic acid containing from about 8 to about 14 carbon atoms, an aliphatic dicarboxylic acid containing from about 4 to about 12 carbon atoms, a cycloaliphatic dicarboxylic acid having about 8 to about 12 carbon atoms or mixtures thereof.
A copolyester formed from the reaction product of:
- a glycol component with a dicarboxylic acid component,
- wherein the glycol component comprises 1,3- or 1,4-cyclohexanedimethanol in an amount ranging from about 5 to about 60 mole % and ethylene glycol in an amount ranging from about 40 to about 95 mole %,
- wherein the dicarboxylic acid component comprises at least about 50 mole % of a dicarboxylic acid component which is an acid, anhydride, acid chloride or ester of an aromatic dicarboxylic acid containing from about 8 to about 14 carbon atoms, an aliphatic dicarboxylic acid containing from about 4 to about 12 carbon atoms, a cycloaliphatic dicarboxylic acid having about 8 to about 12 carbon atoms or mixtures thereof;
- and
- wherein the copolyester has an I.V. of between about 0.36 to 0.58 and wherein the copolyester is formed in the presence of a catalyst system comprising up to about 35 ppm Ti.
2 more elements
A copolyester formed from the reaction product of:
- a glycol component with a dicarboxylic acid component,
- wherein the glycol component comprises 1,3- or 1,4-cyclohexanedimethanol in an amount ranging from about 5 to 60 mole % and ethylene glycol in an amount ranging from about 40 to about 95 mole %,
- wherein the dicarboxylic acid component comprises isophthalic acid or an anhydride, acid chloride or ester thereof in an amount ranging from at least 10 mole % to about 50 mole % and at least about 50 mole % of a dicarboxylic acid component which is an acid, anhydride, acid chloride or ester of an aromatic dicarboxylic acid containing from about 8 to about 14 carbon atoms, an aliphatic dicarboxylic acid containing from about 4 to about 12 carbon atoms, a cycloaliphatic dicarboxylic acid having about 8 to about 12 carbon atoms or mixtures thereof;
- and
- wherein the copolyester is formed in the presence of a catalyst system comprising up to about 35 ppm Ti.
2 more elements
Dependencies are inferred from the claim text.