US3954902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters with good dyeing affinity and a process for obtaining same
Assignee: Rhone Poulenc Textile SA
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Filing: 1975-03-19
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Granted: 1976-05-04
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Expires: 1995-03-19
Abstract
Abstract Polyesters having improved affinity for acid dyes are produced by incorporation, in the polyester-forming dicarboxylic acid and dihydric alcohols, quaternary ammonium compounds of the formula ##EQU1## wherein the R's represent aliphatic, cycloaliphatic or aromatic radicals, at least one R being substituted by at least a group capable of forming ester bonds with the recurring polyester units, at least two R's being capable of forming between them a ring which may contain quaternizable nitrogen atoms; and where: X n - is a stable anion of valency n of an organic acid or of a mineral oxyacid; and where: y is an integer equal to the valence of the anion. The resulting composition is melt spinnable.
Inventors
- 👤 Yves Vaginay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:46
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6856; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
148 words
A melt spinnable composition consisting essentially of a polyester of at least one aromatic dicarboxylic acid or an ester thereof and at least one dihydric alcohol, and 1 - 10% of units, with respect to the sum of the recurring units of said polyester, issuing from a product having the formula ##EQU4## wherein the R's represent aliphatic, cycloaliphatic or aromatic radicals, at least one R being substituted by at least a group capable of forming ester bond with the recurring polyester units, the total number of said ester bonds forming groups being no greater than three, at least two R's being capable of forming between them a ring which may contain quaternizable nitrogen atoms; X n - is a stable anion of valency n and selected from the group consisting of sulfate, sulfonate and phosphonate anions; and Y is an integer equal to the valence of the anion.
Claim 2
Dependent Claim
148 words
A melt spinnable composition consisting essentially of a polyester of at least one aromatic dicarboxylic acid or an ester thereof and at least one dihydric alcohol, and 1 - 10% of units, with respect to the sum of the recurring units of said polyester, issuing from a product having the formula ##EQU4## wherein the R's represent aliphatic, cycloaliphatic or aromatic radicals, at least one R being substituted by at least a group capable of forming ester bond with the recurring polyester units, the total number of said ester bonds forming groups being no greater than three, at least two R's being capable of forming between them a ring which may contain quaternizable nitrogen atoms; X n - is a stable anion of valency n and selected from the group consisting of sulfate, sulfonate and phosphonate anions; and Y is an integer equal to the valence of the anion.
Claim 3
Dependent Claim
20 words
A melt spinnable composition according to claim 1 containing 1 - 10% of units issuing from an aliphatic dicarboxylic acid.
Claim 4
Dependent Claim
30 words
A melt spinnable composition according to claim 1, containing 1 - 3% of units issuing from the product of formula I with respect to the recurring units of the polymer.
Claim 5
Dependent Claim
37 words
A melt spinnable composition according to claim 1, wherein the aromatic dicarboxylic acid contains about 8 to about 14 carbon atoms and the dihydric alcohols are aliphatic or cycloaliphatic alcohols which contain 2 - 10 carbon atoms.
Claim 6
Dependent Claim
50 words
A melt spinnable composition according to claim 1, wherein R is an aliphatic radical represented by the formula - (CH.sub.2).sub.a - Z where a is an integer from 1 - 12 and Z is H, COOH, COOR', or OH where R' is an alkyl of 1 to 10 carbon atoms.
Claim 7
Dependent Claim
46 words
A melt spinnable compositon according to claim 1 where R is an aromatic radical of the formula ##SPC7## where a is an integer of 1 - 12 and Z is H, COOH, COOR', or OH where R' is an alkyl of 1 to 10 carbon atoms.
Claim 8
Dependent Claim
47 words
A melt spinnable composition according to claim 1 where R is a cycloaliphatic radical represented by the formula ##SPC8## where a is an integer from 1 - 12 and Z is H, COOH, COOR', or OH where R' is an alkyl of 1 to 10 carbon atoms.
Claim 9
Dependent Claim
47 words
A melt spinnable composition according to claim 1, wherein at least two R's form rings of the formula ##SPC9## where a is an integer from 1 - 12 and Z is H, COOH, COOR', or OH, where R' is an alkyl of 1 to 10 carbon atoms.
Claim 10
Dependent Claim
69 words
A process for producing a melt spinnable composition according to claim 1 comprising reacting at least an aromatic dicarboxylic acid or an ester thereof with at least one dihydric alcohol, then polycondensing the product thus obtained in the presence of 1 - 10% mols with respect to the number of mols of the dicarboxylic acid or derivative thereof, of the product of formula (I) as defined in claim 1.
Claim 11
Dependent Claim
73 words
A process for producing a melt spinnable composition according to claim 1 comprising reacting at least an aromatic dicarboxylic acid or ester thereof and an aliphatic dicarboxylic acid with at least one dihydric alcohol, then polycondensing the product thus obtained in the presence of 1 - 10% mols with respect to the number of mols of the dicarboxylic acid or ester thereof, of the product of formula (I) as defined in claim 1.
Claim 12
Dependent Claim
87 words
A process for producing a melt spinnable composition according to claim 1 comprising reacting at least an aromatic dicarboxylic acid or an ester thereof with at least one dihydric alcohol, then polycondensing the product thus obtained in the presence of a polymer formed by reacting the product (I) as defined in claim 1 with a dicarboxylic acid or an ester thereof, whereby the concentration of the product (I) is 1 - 10% mols with respect to the total number of mols of dicarboxylic acid or derivative thereof.
Claim 13
Dependent Claim
56 words
A process for producing a melt spinnable composition comprising mixing with a polyester a polymer formed by reacting the product (I) as defined in claim 1 with a dicarboxylic acid or an ester thereof, the total number of units of product (I) being 1 - 10% mols of the total recurring polyester units in the mixture.
Claim 14
Dependent Claim
11 words
Filaments consisting essentially of the melt spinnable composition of claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |