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US4369286A
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Modified aminoplast resins containing methylolmelamine etherified with a monoalcohol as modifier
Assignee: Patheon Austria GmbH and Co KG
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Filing: 1981-11-03
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Granted: 1983-01-18
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Expires: 2001-11-03
Abstract
Abstract Modified aminoplast resins based on melamine and formaldehyde or urea and formaldehyde, which contain, as modifiers, methylolmelamines having a molar ratio of melamine to formaldehyde of 1:3 to 1:6, which are etherified with mono-alcohols having 1 to 4 carbon atoms, in a ratio of melamine to alcohol of 1:2 to 1:6. These resins are used, in particular, for the production of decorative, glossy-surface laminations.
Inventors
- 👤 Hubert Czepel
- 👤 Friedl Heger
- 👤 Wilhelm Dobramysl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:17
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L61/26; C08L61/28; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/30; C08G12/32; C08G12/34; C08G12/36; C08G12/38; C08G12/40; C08G12/42; C08L61/30; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A modified aminoplast resin based on melamine and formaldehyde or urea and formaldehyde, which contains, as the modifier, 0.5 to 5% by weight, relative to an aqueous solution of an aminoplast precondensate having a solids content of 50 to 65% by weight, of a methylolmelamine having a molar ratio of melamine to formaldehyde of 1:3 to 1:6, which is etherified with a mono-alcohol having a chain length of 1 to 4 carbon atoms, in a molar ratio of melamine to alcohol of 1:2 to 1:6.
Claim 2
Dependent Claim
85 words
A modified aminoplast resin based on melamine and formaldehyde or urea and formaldehyde, which contains, as the modifier, 0.5 to 5% by weight, relative to an aqueous solution of an aminoplast precondensate having a solids content of 50 to 65% by weight, of a methylolmelamine having a molar ratio of melamine to formaldehyde of 1:3 to 1:6, which is etherified with a mono-alcohol having a chain length of 1 to 4 carbon atoms, in a molar ratio of melamine to alcohol of 1:2 to 1:6.
Claim 3
Dependent Claim
23 words
A modified aminoplast resin according to claim 1, wherein the molar ratio of melamine:formaldehyde:alcohol in the modifier is 1:(4 to 5.5):(2 to 4).
Claim 4
Dependent Claim
17 words
A modified aminoplast resin according to claim 1, wherein the alcohol component of the modifier is methanol.
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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |