GB1421994A - Ureaformaldehyde condensates - Google Patents
Ureaformaldehyde condensatesInfo
- Publication number
- GB1421994A GB1421994A GB211573A GB211573A GB1421994A GB 1421994 A GB1421994 A GB 1421994A GB 211573 A GB211573 A GB 211573A GB 211573 A GB211573 A GB 211573A GB 1421994 A GB1421994 A GB 1421994A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- jan
- ratio
- plywood
- formaldehyde
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
1421994 Plywood BORDEN (UK) Ltd 15 Jan 1973 [27 Jan 1972] 2115/73 Heading B5L [Also in Division C3] A plywood glue is obtained by adding urea to formaldehyde solution, which may already contain 0À1-0À25 moles of urea per mole of formaldehyde as an adduct, at 20-95‹ C. and pH 0À2-2, at 4-36 millimoles of urea/mole of CH 2 O/min to an F : U ratio of 2À5-3À5 : 1, continuing the condensation if desired, then adjusting the pH to 7-10. Further urea may then be added, to give an F : U ratio of 1À2- 1À8 : 1. In Example 4 birch panels are glued with a mixture of such resin solutions with wheat flour, water and a catalyst.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22140472A | 1972-01-27 | 1972-01-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1421994A true GB1421994A (en) | 1976-01-21 |
Family
ID=22827691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB211573A Expired GB1421994A (en) | 1972-01-27 | 1973-01-15 | Ureaformaldehyde condensates |
Country Status (4)
Country | Link |
---|---|
AR (1) | AR194769A1 (en) |
AU (1) | AU4804472A (en) |
BR (1) | BR7300322D0 (en) |
GB (1) | GB1421994A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103131A2 (en) * | 1982-09-10 | 1984-03-21 | Borden, Inc. | Amino-formaldehyde resins and use thereof in lignocellulosic composites |
US4968772A (en) * | 1986-06-27 | 1990-11-06 | Dyno Industrier As | Process for the preparation of urea-formaldehyde resins |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4409293A (en) | 1982-09-10 | 1983-10-11 | Borden, Inc. | Wood composites of low formaldehyde emission |
US4410685A (en) | 1982-09-10 | 1983-10-18 | Borden, Inc. | Hydrolytically stable urea-formaldehyde resins and process for manufacturing them |
US4536245A (en) * | 1983-10-11 | 1985-08-20 | Borden, Inc. | Low formaldehyde emission urea-formaldehyde resins containing a melamine additive |
-
1972
- 1972-10-23 AU AU48044/72A patent/AU4804472A/en not_active Expired
- 1972-11-29 AR AR24538272A patent/AR194769A1/en active
-
1973
- 1973-01-15 BR BR32273A patent/BR7300322D0/en unknown
- 1973-01-15 GB GB211573A patent/GB1421994A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103131A2 (en) * | 1982-09-10 | 1984-03-21 | Borden, Inc. | Amino-formaldehyde resins and use thereof in lignocellulosic composites |
EP0103131A3 (en) * | 1982-09-10 | 1985-11-06 | Borden, Inc. | Amino-formaldehyde resins and use thereof in lignocellulosic composites |
US4968772A (en) * | 1986-06-27 | 1990-11-06 | Dyno Industrier As | Process for the preparation of urea-formaldehyde resins |
Also Published As
Publication number | Publication date |
---|---|
AU4804472A (en) | 1974-04-26 |
BR7300322D0 (en) | 1973-12-18 |
AR194769A1 (en) | 1973-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |