Patent DE364053C successfully refreshed from Google Patents.
EP0272941A2
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Process for improving the dyeability of woven or non-woven textiles
Assignee: AUSCHEM SpA
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Filing: 1987-12-23
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Granted: —
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Expires: 2007-12-23
Abstract
Abstract A process for improving the dyeability of a woven or non-woven textile comprises comprises treating the textile, before dyeing, with an aqueous dispersion of a polyurethane having cationic groups randomly distributed in the macromolecule.
Inventors
- 👤 Cesare Prelini
- 👤 Aldo Trovati
- 👤 Tiziana Gambini
- 👤 Vittorio Stefanoli
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 15:25
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/918; Y10S8/92; Y10S8/922; Y10S8/924; Y10S8/927; Y10S8/928
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
A process for improving the dyeability of a woven or non-woven textile which comprises treating the textile, before dyeing, with an aqueous dispersion of a polyurethane having cationic groups randomly distributed in the macromolecule.
Claim 2
Dependent Claim
34 words
A process for improving the dyeability of a woven or non-woven textile which comprises treating the textile, before dyeing, with an aqueous dispersion of a polyurethane having cationic groups randomly distributed in the macromolecule.
Claim 3
Dependent Claim
36 words
A process as claimed in claim 1 characterised in that the cationic groups are of the ammonium type and are present in an amount of from 15 to 100 milliequivalents per 100 grams of dry polyurethane.
Claim 4
Dependent Claim
22 words
A process as claimed in claim 1 or claim 2 characterised in that the polyurethane also has polyether side or end chains.
Claim 5
Dependent Claim
31 words
A process as claimed in calim 3 characterized in that the polyether side or end chains have an average molecular weight of from 500 to 2000, preferably from 500 to 1000.
Claim 6
Dependent Claim
30 words
A process as claimed in claim 3 or claim 4 characterised in that the polyether chains are methyl or butyl monoethers of polyoxyethyleneglycol as such or copolymerized with propylene oxide.
Claim 7
Dependent Claim
21 words
A process as claimed in any one of claims 3 - 4 characterised in that the polyether chains are polyoxyethylene chains.
Claim 8
Dependent Claim
33 words
A process as claimed in any one of claims 3-6 characterised in that the polyether chains are present in an amount of from 4 to 15% by weight, based on the dry polyurethane.
Claim 9
Dependent Claim
35 words
A process as claimed in any one of the preceding claims characterised in that the aqueous polyurethane dispersion has a solids content of more than 10% by weight, preferably from 10 to 50% by weight.
Claim 10
Dependent Claim
29 words
A process as claimed in any ne of the preceding claims, characterised in that the woven or non-woven textile is based on natural fibres, synthetic fibres or mixed fibres.
References Cited (Backward Citations)
No citation records indexed.
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