GB281993A - An improved process for the production of artificial materials and/or articles made therefrom, from the condensation products of urea or urea derivatives with formaldehyde or substances yielding formaldehyde - Google Patents
An improved process for the production of artificial materials and/or articles made therefrom, from the condensation products of urea or urea derivatives with formaldehyde or substances yielding formaldehydeInfo
- Publication number
- GB281993A GB281993A GB1607927A GB1607927A GB281993A GB 281993 A GB281993 A GB 281993A GB 1607927 A GB1607927 A GB 1607927A GB 1607927 A GB1607927 A GB 1607927A GB 281993 A GB281993 A GB 281993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formaldehyde
- urea
- cellulose
- casein
- substances
- 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
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
-
- 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
- C08G12/043—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with at least two compounds covered by more than one of the groups C08G12/06 - C08G12/24
- C08G12/046—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with at least two compounds covered by more than one of the groups C08G12/06 - C08G12/24 one being urea or thiourea
-
- 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)
- Dry Formation Of Fiberboard And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
281,993. Schmidt, F. Dec. 8, 1926, [Convention date]. Samples furnished. Albumen &c. compositions; amorphous cellulose &c. compositions.-Candensatian products of formaldehyde with urea or its derivatives are formed in the presence of carrier substances, or mixed with such substances prior to dehydration, and are then dehydrated while being kept in motion. It is preferred to mix urea with the carrier and then to add formaldehyde, but the reagents may also be mixed with the carrier simultaneously or after the reaction has begun. Other substances forming resinous products with formaldehyde, such as urethane, aniline, benzanilide and other anilides, p-toluenesulphonamide and other amides, and phenol may be added with the urea. Suitable carrier substances are casein, cellulose, and its derivatives, natural and artificial resins, polymerized vinyl esters and fibrous or amorphous fillers such as wood meal, peat meal, or alumina; mixtures of carriers also may be used, such as casein and wood meal or methyl cellulose and peat meal. When casein, cellulose, or a cellulose derivative is used, softening agents, gelatinizing agents, and/or volatile solvents may be incorporated therewith. The dehydration of the condensation products may be effected in kneading or rolling apparatus under ordinary or diminished pressure. In one example, casein is kneaded with water, with or without a volatile solvent such as ethylene chlorhydrin, and the mass is mixed with urea and ethyl urethane. Formaldehyde is then added and the mixture is kneaded or rolled, at ordinary or diminished pressure. at 40-50‹ C. while dehydration proceeds. The product may be moulded directly or after pulverization. In another example, the same procedure is followed except that wood meal and a black colouring matter are included in the mass to which the formaldehyde is added. Specifications 171,094. 181,014, 238,904, 246,126, and 249,101, [all in Class 2 (iii), Dyes &c.], are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH81018D DE591045C (en) | 1926-12-08 | 1926-12-08 | Process for the production of hardenable, compressible substances from condensation products of formaldehyde or formaldehyde-releasing bodies and ureas or urea derivatives and swellable carrier substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB281993A true GB281993A (en) | 1928-11-16 |
Family
ID=7442196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1607927A Expired GB281993A (en) | 1926-12-08 | 1927-06-16 | An improved process for the production of artificial materials and/or articles made therefrom, from the condensation products of urea or urea derivatives with formaldehyde or substances yielding formaldehyde |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE591045C (en) |
| FR (1) | FR636219A (en) |
| GB (1) | GB281993A (en) |
| NL (1) | NL23271C (en) |
-
1926
- 1926-12-08 DE DESCH81018D patent/DE591045C/en not_active Expired
-
1927
- 1927-06-10 NL NL37269A patent/NL23271C/en active
- 1927-06-16 GB GB1607927A patent/GB281993A/en not_active Expired
- 1927-06-18 FR FR636219A patent/FR636219A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE591045C (en) | 1934-01-16 |
| FR636219A (en) | 1928-04-04 |
| NL23271C (en) | 1930-12-15 |
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