Patent EP0574148A1 successfully refreshed from Google Patents.
EP0574148A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polycyclic dyes
Assignee: BASF SE
•
Filing: 1993-05-20
•
Granted: —
•
Expires: 2013-05-20
Abstract
Abstract A polycyclic dye of the Formula (1): wherein: Ring A is unsubstituted or is substituted by from 1 to 3 groups; Ring B is unsubstituted apart from the O(CH₂) m CO₂(CH₂) n -R¹ group or is substituted by from 1 to 4 further groups; R¹ is -H, alkoxy or a 5, 6 or 7-membered saturated or unsaturated heterocyclic residue; m is an integer from 1 to 6; and n is from 0 to 6. These polycyclic dyes are useful for the coloration of synthetic textiles, particularly polyester textile materials to which they impart a bluish-red shade.
Inventors
- 👤 Prakash Patel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:02
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/04; C09; C09B; C09B57/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A polycyclic dye of the Formula (1): wherein: Ring A is unsubstituted or is substituted by from 1 to 3 groups; Ring B is unsubstituted apart from the O(CH₂) m CO₂(CH₂) n -R¹ group or is substituted by from 1 to 4 further groups; R¹ is -H, alkoxy or a 5, 6 or 7-membered saturated or unsaturated heterocyclic residue; m is an integer from 1 to 6; and n is from 0 to 6.
Claim 2
Dependent Claim
29 words
A polycyclic dye according to Claim 1 wherein R¹ is a 5, 6 or 7-membered saturated or unsaturated heterocyclic residue and n is an integer from 1 to 6.
Claim 3
Dependent Claim
22 words
A polycyclic dye according to Claim 1 or Claim 2 wherein R¹ is a 5- or 6-membered saturated or unsaturated heterocyclic residue.
Claim 4
Dependent Claim
29 words
A polycyclic dye according to any one of Claims 1 to 3 wherein R¹ is pyranyl, tetrahydropyranyl, furyl, tetrahydrofuryl, thienyl, tetrahydrothienyl, pyrrolyl, pyrrolidyl, pyridyl, piperidyl, thiazolyl, isothiazolyl and morpholinyl.
Claim 5
Dependent Claim
18 words
A polycyclic dye according to any one of Claims 1 to 4 wherein R¹ is tetrahydropyranyl or tetrahydrofuranyl.
Claim 6
Dependent Claim
113 words
A polycyclic dye of the Formula (2): wherein: R is -H, -OH, halogen, alkyl, alkenyl, alkoxy, aryl, -O(CH₂) m R⁴ in which R⁴ is a 5, 6 or 7-membered saturated or unsaturated heterocyclic residue, -NR²R³ in which R² and R³ are each independently -H, alkyl or alkenyl; Ring A is unsubstituted or is substituted by from 1 to 3 groups; Ring B is unsubstituted apart from the O(CH₂) m CO₂(CH₂) n -R¹ group or is substituted by from 1 to 4 further groups; R¹ is -H, alkoxy or a 5, 6 or 7-membered saturated or unsaturated heterocyclic residue; m is an integer for 1 to 6; and n is from 0 to 6.
Claim 7
Dependent Claim
19 words
3-(4-(n-Propoxy)phenyl)-7-(4-(tetrahydropyran-2-ylmethoxy carbonylmethoxy)phenyl)-2,6-dioxo-2,6-dihydrobenzo[1:2-b, 4:5-b']difuran; 3-(4-(n-propoxy)phenyl)-7-(4-(tetrahydrofuran-2-ylmethoxycarbonyl methoxy)phenyl)-2,6-dioxo-2,6-dihydrobenzo[1:2-b, 4:5-b']difuran; 3-(4-(tetrahydropyran-2-ylmethoxy)phenyl)-7-(4-carboxymethoxy)phenyl-2,6-dioxo-2,6-dihydrobenzo[1:2-b, 4:5-b']difuran; 3-(4-(tetrahydropyran-2-ylmethoxy)phenyl)-7-(4-(2-ethoxyethoxycarbonyl methoxy)phenyl)-2,6-dioxo-2,6-dihydrobenzo[1:2-b, 4:5-b']difuran; 3-(4-(tetrahydropyran-2-ylmethoxy)phenyl)-7-(4-(tetrahydrofuran-2-yl methoxycarbonylmethoxy)phenyl)-2,6-dioxo-2,6-dihydrobenzo[1:2-b, 4:5-b']difuran; 3-(4-tetrahydrofuran-2-ylmethoxy)phenyl-7-(4-(carboxymethoxy)phenyl)-2,6-dioxo-2,6-dihydrobenzo[1:2-b, 4:5-b']difuran; 3-(4-(tetrahydrofuran-2-ylmethoxy)phenyl)-7-(4-(2-ethoxyethoxycarbonyl methoxy)phenyl)-2,6-dioxo-2,6=dihydrobenzo[1:2-b, 4:5-b']difuran.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.