US3624034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfophenoxy malonate compounds and cationic dyeable copolyesters containing same
Assignee: FMC Corp
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Filing: 1970-05-15
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Granted: 1971-11-30
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Expires: 1990-05-15
Abstract
Abstract Sulfophenoxy malonate compounds and copolyester resins utilizing said malonate compounds comprising the condensation product of (a) an aromatic dicarboxylic acid or its lower alkyl diester, (b) an aliphatic glycol, and (c) a minor amount of a substituted acid or ester thereof represented by the formula: WHEREIN R1 and R2 are both hydrogen or lower alkyl radicals, R3 is hydrogen or a lower alkyl radical, and M is a metal.
Inventors
- 👤 John A Price
- 👤 Mary J Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
16 words
A composition of claim 1 wherein (a) is terephthalic acid or a lower alkyl diester thereof.
Claim 2
Dependent Claim
10 words
A composition of claim 2 wherein (b) is ethylene glycol.
Claim 3
Dependent Claim
64 words
A composition of claim 1 wherein (a) is terephthalic acid or a lower alkyl diester thereof and a minor amount of another saturated aromatic dicarboxylic acid or lower alkyl diester thereof, (b) is a glycol represented by the formula: HO(CH2)zOH, wherein z is a positive integer of from 2 to 6 and (c) iS a substituted acid or ester thereof represented by the formula:
Claim 4
Dependent Claim
89 words
A composition of claim 1 wherein (a) is terephthalic acid or a lower alkyl diester thereof, (b) is a mixture of a glycol represented by the formula: HO(CH2)zOH, wherein z is a positive integer of from 2 to 6 and a minor amount of another glycol represented by the formula: wherein a and b represent positive integers of from 1 to 3, R4 and R5 represent lower alkyl radicals containing from one to six carbon atoms, and (c) is a substituted acid or ester thereof represented by the formula:
Claim 5
Dependent Claim
24 words
A composition of claim 1 wherein (a) is dimethyl terephthalate, (b) is ethylene glycol, and (c) is the sodium salt of diethyl 2-methyl-2-(p-sulfophenoxy) malonate.
Claim 6
Dependent Claim
20 words
A composition of claim 1 wherein (a) is terephthalic acid, (b) is ethylene glycol, and (c) is methyl-2-(p-sodiumsulfophenoxy) malonic acid.
Claim 7
Dependent Claim
29 words
A composition of claim 1 wherein (a) is dimethyl terephthalate, (b) is ethylene glycol, and (c) is an alkali metal or alkaline earth metal salt of dimethyl 2-ethyl-2-(p-sulfophenoxy) malonate.
Claim 8
Dependent Claim
20 words
A composition of claim 8 wherein (c) is an alkali metal or alkaline earth metal salt of dimethyl 2-(p-sulfophenoxy) malonate.
Claim 9
Dependent Claim
25 words
A copolyester resin consisting essentially of a linear alkylene terephthalate polymer containing from about 0.5 to 10 mole percent of segments represented by the formula:
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |