EP0267681A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Treating fibrous polyamide articles
Assignee: 3M Co
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Filing: 1987-09-24
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Granted: —
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Expires: 2007-09-24
Abstract
Abstract A method for providing fibrous polyamide materials with stain resistance is provided. The method comprises contacting the fibrous polyamide materials with an aqueous solution comprising a normally solid, water-soluble, partially sulfonated novolak resin, which comprises the condensation product of at least one phenolic compound and an aldehyde, and a water-soluble divalent metal salt.
Inventors
- 👤 George L. C/O Minnesota Mining And Payet
- 👤 John Cheng-Chung C/O Minnesota Mining And Chang
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 21:41
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/41; D06M15/412
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
49 words
A method for providing fibrous polyamide materials with stain resistance comprising contacting the fibrous polyamide materials with an aqueous solution comprising a normally solid, water-soluble, partially sulfonated novolak resin, which comprises the condensation product of at least one phenolic compound and an aldehyde, and a water-soluble divalent metal salt.
Claim 2
Independent Claim
49 words
A method for providing fibrous polyamide materials with stain resistance comprising contacting the fibrous polyamide materials with an aqueous solution comprising a normally solid, water-soluble, partially sulfonated novolak resin, which comprises the condensation product of at least one phenolic compound and an aldehyde, and a water-soluble divalent metal salt.
Claim 3
Dependent Claim
89 words
The method of claim 1 comprising adding to a dyebath, before, during or after dyeing of the polyamide material, at least 0.1% solids based on the weight of the polyamide material of said sulfonated novolak resin and at least 1% based on the weight of the polyamide material of said water-soluble divalent metal salt, immersing the polyamide material in the dyebath for a time and temperature sufficient to exhaust the sulfonated novolak resin onto the polyamide material, removing the polyamide material from the dyebath and drying the polyamide material.
Claim 4
Dependent Claim
74 words
The method of claim 1 comprising applying to the polyamide material a solution comprising at least 0.1% solids based on the weight of the polyamide material of said sulfonated novolak resin and at least 1% of said water-soluble divalent metal salt based on the weight of the polyamide material, steaming said polyamide material for a time sufficient to effect adherence of said sulfonated novolak resin to said polyamide material, and drying the polyamide material.
Claim 5
Dependent Claim
50 words
The method of claim 1 comprising padding a solution comprising at least 0.1% based on the weight of the polyamide material of said sulfonated novolak resin and 1% based on the weight of the polyamide material of said divalent metal salt onto the polyamide material and drying he polyamide material.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein said water-soluble, divalent metal salts are selected from inorganic and organic salts of magnesium, barium, calcium, and zinc.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein said sulfonated novolak resin comprises a sulfonated condensation product of at least one phenolic compound and an aldehyde.
Claim 8
Dependent Claim
27 words
The method of claim 1 wherein said aqueous solution further contains a fluorochemical oil and water repellent composition and said water-soluble metal salt is a magnesium salt.
Claim 9
Dependent Claim
12 words
A fibrous polyamide material treated according to the method of claim 1.
Claim 10
Dependent Claim
28 words
An aqueous solution for providing stain resistance to fibrous polyamide materials, said solution comprising a normally solid, water-soluble, partially sulfonated novolak resin and a water-soluble divalent metal salt.
Claim 11
Dependent Claim
28 words
An aqueous solution for providing stain resistance to fibrous polyamide materials, said solution comprising a normally solid, water-soluble, partially sulfonated novolak resin and a water-soluble divalent metal salt.
Claim 12
Dependent Claim
44 words
The solution of claim 9 wherein said solution comprises at least 0.1% solids based on the weight of the polyamide material of said sulfonated novolak resin and at least 1% of said water-soluble divalent metal salt based on the weight of the polyamide material.
Claim 13
Dependent Claim
17 words
The solution of claim 9 wherein said solution further comprises a fluorochemical oil and water repellent composition.
References Cited (Backward Citations)
No citation records indexed.
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