Patent US4530940A successfully refreshed from Google Patents.
US4530940A
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US
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Stabilized melamine resin foams
Assignee: BASF SE
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Filing: 1984-06-28
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Granted: 1985-07-23
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Expires: 2004-06-28
Abstract
Abstract Stabilized melamine resin foams contain, as a stabilizer, a copper or iron compound in an amount corresponding to from 10 ppm to 3%, based on the weight of the melamine resin, of Cu or Fe, preferably an oxide, hydroxide or carbonate of copper.
Inventors
- 👤 Frank P. Woerner
- 👤 Horst Reimann
- 👤 Harald Mahnke
- 👤 Peter Neumann
- 👤 Gerhard Turznik
- 👤 Hanshelmut Kaeppel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:54
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/10; C08K3/105
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A stabilized melamine/formaldehyde resin foam which contains, as a stabilizer, a copper or iron compound selected from the group consisting of a copper oxide, hydroxide or carbonate, Cu 3 (PO 4 ) 2 , CuSO 4 , CuBr, CuBr 2 , CuCl, CuCl 2 , Cu(NO 3 ) 2 , CuI, CuI.KI, Cu(SCN) 2 , a copper salt of a monobasic or polybasic carboxylic acid, aromatic sulfonic acid or organic phosphoric acid, a neutral or ionic complex of divalent copper, FeSO 4 , FeCl 2 , FeCl 3 , (NH 4 )Fe(SO 4 ) 2 , Fe(NO 3 ) 2 , iron formate, basic iron(III) acetate and iron(II) oxalate in an amount corresponding to from 10 ppm to 3%, based on the weight of the melamine/formaldehyde resin, of Cu or Fe.
Claim 2
Dependent Claim
131 words
A stabilized melamine/formaldehyde resin foam which contains, as a stabilizer, a copper or iron compound selected from the group consisting of a copper oxide, hydroxide or carbonate, Cu 3 (PO 4 ) 2 , CuSO 4 , CuBr, CuBr 2 , CuCl, CuCl 2 , Cu(NO 3 ) 2 , CuI, CuI.KI, Cu(SCN) 2 , a copper salt of a monobasic or polybasic carboxylic acid, aromatic sulfonic acid or organic phosphoric acid, a neutral or ionic complex of divalent copper, FeSO 4 , FeCl 2 , FeCl 3 , (NH 4 )Fe(SO 4 ) 2 , Fe(NO 3 ) 2 , iron formate, basic iron(III) acetate and iron(II) oxalate in an amount corresponding to from 10 ppm to 3%, based on the weight of the melamine/formaldehyde resin, of Cu or Fe.
Claim 3
Dependent Claim
20 words
A melamine/formaldehyde resin foam as claimed in claim 1, which contains a copper oxide, hydroxide or carbonate as a stabilizer.
Claim 4
Dependent Claim
24 words
A melamine/formaldehyde resin foam as claimed in claim 1, which contains basic copper carbonate CuCO 3 .Cu(OH) 2 or 2CuCO 3 .Cu(OH) 2 .
Claim 5
Dependent Claim
18 words
A melamine/formaldehyde resin foam as claimed in claim 1, which contains a water-soluble copper complex as a stabilizer.
References Cited (Backward Citations)
US4208485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |