GB1089836A - A method of producing pressed chip bodies of low inflammability - Google Patents
A method of producing pressed chip bodies of low inflammabilityInfo
- Publication number
- GB1089836A GB1089836A GB4284365A GB4284365A GB1089836A GB 1089836 A GB1089836 A GB 1089836A GB 4284365 A GB4284365 A GB 4284365A GB 4284365 A GB4284365 A GB 4284365A GB 1089836 A GB1089836 A GB 1089836A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- resin
- aldehyde
- fire
- temperature
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Sheets and formed bodies of low inflammability are produced from comminuted organic fibrous materials (wood chips, shredded wood, flax shives, sisal fibres, or bagasse) by impregnating with an aqueous solution of a fire-retarding chemical and an aldehyde, mixing with a thermosetting binding agent, and then subjecting to heat and pressure. The impregnation is carried out at a temperature of 50-70 DEG C. with mono- or di-ammonium phosphate to which a nitrogenous compound having at least one reactive hydrogen atom, e.g. urea, dimethylol-urea, or triaminotriacin, or other fire-retarding chemical, e.g. dicyandiamide or pentaerythritol, is added. The aldehyde is one containing a number of reactive atoms or groups, e.g. paraformaldehyde, trichloroacetaldehyde, or hexamethylene tetramine. The impregnated material is dried at a temperature of 130-160 DEG C. and is then air-conditioned at 20 DEG C. and 60% humidity to ensure a uniform moisture content of about 2%. The resin is a urea- or melamine-formaldehyde resin and is used in an amount of 18-20% of resin solids based on the dry weight of the fibrous material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1339864 | 1964-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1089836A true GB1089836A (en) | 1967-11-08 |
Family
ID=4392079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4284365A Expired GB1089836A (en) | 1964-10-15 | 1965-10-08 | A method of producing pressed chip bodies of low inflammability |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1089836A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996015207A1 (en) * | 1994-11-12 | 1996-05-23 | Basf Aktiengesellschaft | Fire protection covers made of melamine-formaldehyde resin fibres |
-
1965
- 1965-10-08 GB GB4284365A patent/GB1089836A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996015207A1 (en) * | 1994-11-12 | 1996-05-23 | Basf Aktiengesellschaft | Fire protection covers made of melamine-formaldehyde resin fibres |
| US6004892A (en) * | 1994-11-12 | 1999-12-21 | Basf Aktiengesellschaft | Fire protection covers made of melamine-formaldehyde resin fibers |
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