US4430380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonded structures of textile materials
Assignee: Sanofi Aventis Deutschland GmbH
•
Filing: 1982-03-22
•
Granted: 1984-02-07
•
Expires: 2002-03-22
Abstract
Abstract A bonded structure of textile materials bonded by a melamine-formaldehyde precondensate is produced by applying to a textile material a melamine-formaldehyde precondensate with a molar ratio of melamine to formaldehyde of 1:(0.8 to 1.26) to form a composite and then compressing the composite with an overpressure of 1 to 200 bars at temperature of from 130 DEG to 220 DEG C.
Inventors
- 👤 Hans Honel
- 👤 Walter Michel
- 👤 Steffen Piesch
- 👤 Karin Schluter
- 👤 Manfred Seidel
- 👤 Wolfgang Spieler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:38
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/30; C08G12/32; C08G12/34; C08G12/40; C08J; C08J5/00; C08J5/24; C08J5/245; C08J5/246; D04H1/42; D04H1/4326; D04H1/435; D04H1/64; C08J2361/00; C08J2361/20; C08J2361/26; C08J2361/28; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2762; Y10T442/277; Y10T442/2828; Y10T442/2844; Y10T442/2861; Y10T442/2893; Y10T442/291; Y10T442/2918
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
In a bonded structure of textile materials bonded by a melamine-formaldehyde precondensate and cured at an elevated temperature and a elevated pressure, the improvement comprises said melamine-formaldehyde precondensate having been prepared by heating melamine in an aqueous solution or suspension with formaldehyde in a molar ratio of 1:(0.8 to 1.26) at a pH value of 7-11 in the presence of 1 to 25% by weight of modifying agents relative to the total weight of melamine and formaldehyde, and at least 1.0% being an alkali metal salt or alkaline earth metal salt of amidosulphonic acid, at temperatures of 105° to 160° C. until a limited dilutability with water is achieved or further heating until an unlimited dilutability with water is achieved.
Claim 2
Dependent Claim
120 words
In a bonded structure of textile materials bonded by a melamine-formaldehyde precondensate and cured at an elevated temperature and a elevated pressure, the improvement comprises said melamine-formaldehyde precondensate having been prepared by heating melamine in an aqueous solution or suspension with formaldehyde in a molar ratio of 1:(0.8 to 1.26) at a pH value of 7-11 in the presence of 1 to 25% by weight of modifying agents relative to the total weight of melamine and formaldehyde, and at least 1.0% being an alkali metal salt or alkaline earth metal salt of amidosulphonic acid, at temperatures of 105° to 160° C. until a limited dilutability with water is achieved or further heating until an unlimited dilutability with water is achieved.
Claim 3
Dependent Claim
39 words
The bonded structure according to claim 1 wherein said melamine-formaldehyde precondensate contains at least 7.5% by weight relative to the total weight of melamine and formaldehyde of an alkali metal salt or alkaline earth metal salt of amidosulphonic acid.
Claim 4
Dependent Claim
49 words
The bonded structure according to claim 1 wherein said modifying agents are selected from the group consisting of carboxyamides, sulphonamides, glycols, polyglycols, polyglycerol, trimethylolpropane, pentaerythritol, sugars, polymeric sugars, glycol esters, alcohols, ε-caprolactam, methylene-bis-formamide, methylene-bis-acrylamide, a reaction product of formaldehyde/formamide/ε-caprolactam, urea, thiourea, propyleneurea, ethyleneurea, glyoxalurea, acetoguanamine, formoguanamine, benzoguanamine, and adipo-bis-guanamine.
Claim 5
Dependent Claim
23 words
The bonded structure according to claim 1 wherein said melamine-formaldehyde precondensate has a molar ratio of melamine to formaldehyde of 1:(1.01 to 1.2).
Claim 6
Dependent Claim
151 words
The process for production of a bonded textile structure according to claim 1 or claim 4 comprising applying 1 to 250% by weight, of a resin to a textile material wherein said resin is a melamine-formaldehyde precondensate having been prepared by heating melamine in an aqueous solution or suspension with formaldehyde in a molar ration of 1:(0.8 to 1.26) at a pH value of 7-11 in the presence of 1 to 25% by weight of modifying agents relative to the total weight of melamine and formaldehyde, and at least 1.0% being an alkali metal salt or alkaline earth metal salt of adiposulphonic acid, at temperatures of 105° to 160° C. until a limited dilutability with water is achieved or further heating until an unlimited dilutability with water is achieved and, compressing the textile material/resin composite with an over-pressure of 1 to 200 bars and at temperatures of 13° to 220° C.
Claim 7
Dependent Claim
19 words
The process according to claim 5 wherein said composite is compressed with an over-pressure of 2 to 100 bars.
Claim 8
Dependent Claim
21 words
The process according to claim 5 wherein said precondensate has a molar ratio of melamine to formaldehyde of 1:(1.01 to 1.2).
Claim 9
Dependent Claim
29 words
The process according to claim 5 wherein said resin is applied in the form of a aqueous, alcoholic or aqueous/alcoholic solution of 1 to 60% by weight of resin.
Claim 10
Dependent Claim
28 words
The process according to claim 5 wherein said compression is in the presence of 0.1 to 5% by weight, relative to solid resin, of a latent curing agent.
Claim 11
Dependent Claim
17 words
The process according to claim 5 wherein said compression is at temperatures of 150° to 180° C.
Claim 12
Dependent Claim
28 words
The process according to claim 5 wherein said resin is applied to the textile material in the form of a solid powder and is sintered-on prior to compression.
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) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |