US3914523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoplast resin modified with methylene bisformamide and laminated thermosetting decorative sheets
Assignee: Cassella Farbwerke Mainkur AG
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Filing: 1974-01-15
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Granted: 1975-10-21
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Expires: 1994-01-15
Abstract
Abstract A modified aminoplast resin which is the condensation product of an aminoplast constituent and a carbonyl compound having added thereto, either before, during or after said condensation, 0.5 to 40% by weight, based on the solids contents of the finished modified resin and calculated as methylene bisformamide, of at least one member selected from the group consisting of methylene bisformamide and the methylolation products thereof and a laminated thermosetting decorative sheet employing said modified aminoplast resin as a resin impregnant for the decorative top layer carrier in the manufacture of the laminated thermosetting decorative sheet.
Inventors
- 👤 Karl Schnee
- 👤 Steffen Piesch
- 👤 Dieter Tichy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:52
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/043; C08G12/26; C08G12/34; C08K; C08K5/00; C08K5/16; C08K5/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31957; Y10T428/31964
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A LAMINATED THERMOSETTING DECORATIVE SHEET, THE DECORATIVE TOP LAYER OF WHICH IS IMPREGNATED WITH A THERMOHARDENED, MODIFIED AMINOPLAST RESIN WHICH IS THE CONDENSATION PRODUCT OF AN AMINOPLAST CONSITUENT AND A CARBONYL COMPOUND HAVING ADDED THERETO, EITHER BEFORE, DURING OR AFTER SAID CONDENSATION, 0.5 TO 40% BY WEIGHT BASED ON THE SOLIDS CONTENT OF THE FINISHED MODIFIED RESIN AND CALCULATED AS METHYLENE BISFORMAMIDE, OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF METHYLENE BISFORMAMIDE AND THE METHYLOLATION PRODUCTS THEREOF.
Claim 2
Dependent Claim
80 words
A LAMINATED THERMOSETTING DECORATIVE SHEET, THE DECORATIVE TOP LAYER OF WHICH IS IMPREGNATED WITH A THERMOHARDENED, MODIFIED AMINOPLAST RESIN WHICH IS THE CONDENSATION PRODUCT OF AN AMINOPLAST CONSITUENT AND A CARBONYL COMPOUND HAVING ADDED THERETO, EITHER BEFORE, DURING OR AFTER SAID CONDENSATION, 0.5 TO 40% BY WEIGHT BASED ON THE SOLIDS CONTENT OF THE FINISHED MODIFIED RESIN AND CALCULATED AS METHYLENE BISFORMAMIDE, OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF METHYLENE BISFORMAMIDE AND THE METHYLOLATION PRODUCTS THEREOF.
Claim 3
Dependent Claim
19 words
The laminated thermosetting decorative sheet of claim 1 wherein said solids content is from 1 to 25% by weight.
Claim 4
Dependent Claim
19 words
The laminated thermosetting decorative sheet of claim 1 wherein said solids content is from 5 to 15% by weight.
Claim 5
Dependent Claim
20 words
The laminated thermosetting decorative sheet of claim 1 wherein said aminoplast constituent is urea, thiourea, dicyanodiamide, acetoguanamide, benzoguanamine or melamine.
Claim 6
Dependent Claim
23 words
The laminated thermosetting decorative sheet of claim 1 wherein said carbonyl compound is formaldehyde, acetaldehyde, butyraldehyde, iso-butyraldehyde, acetone or methyl-ethyl-ketone or mixtures thereof.
Claim 7
Dependent Claim
20 words
The laminated thermosetting decorative sheet of claim 1 wherein said aminoplast constituent is melamine and said carbonyl compound is formaldehyde.
References Cited (Backward Citations)
US2475846A
Cited
US3198660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |