GB942845A - Foamed products - Google Patents
Foamed productsInfo
- Publication number
- GB942845A GB942845A GB2017261A GB2017261A GB942845A GB 942845 A GB942845 A GB 942845A GB 2017261 A GB2017261 A GB 2017261A GB 2017261 A GB2017261 A GB 2017261A GB 942845 A GB942845 A GB 942845A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- condensate
- urea
- formaldehyde
- furfuryl alcohol
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C08J2361/04, C08J2361/18, and C08J2361/20
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides, as new materials, foamed solid products comprising thermoset co-condensates of urea and furfuryl alcohol with formaldehyde. They can be obtained by treating a urea-furfuryl alcohol-formaldehyde condensate having a pH not less than 7 with a blowing agent and an acid or latent acid hardener for the co-condensate and causing or allowing the co-condensate to foam and to thermoset under the action of the blowing agent and the hardener. Preferred blowing agents are those which generate a gas by reaction with an acid without the application of heat, e.g. sodium carbonate or bicarbonate or calcium carbonate in combination with phosphoric acid. A plasticizer such as a di- or trihydric alcohol can be included in the mixture before the hardening. In examples the co-condensate is prepared by reacting urea and formaldehyde at pH 7.5, then adding urea, furfuryl alcohol and formic acid (to produce pH 6.5), reacting further, cooling, and adjusting the pH to 7. After dehydration finely divided sodium bicarbonate is milled in and foaming is effected by addition of (1) aqueous orthophosphoric acid; (2) wetting agent, polypropylene glycol and aqueous orthophosphoric acid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2017261A GB942845A (en) | 1961-06-05 | 1961-06-05 | Foamed products |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2017261A GB942845A (en) | 1961-06-05 | 1961-06-05 | Foamed products |
Publications (1)
Publication Number | Publication Date |
---|---|
GB942845A true GB942845A (en) | 1963-11-27 |
Family
ID=10141578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2017261A Expired GB942845A (en) | 1961-06-05 | 1961-06-05 | Foamed products |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB942845A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2514542A1 (en) * | 1974-04-04 | 1975-10-23 | Leer Koninklijke Emballage | METHOD OF MANUFACTURING POLYAMINE-FORMALDEHYDE-FURFURYL ALCOHOL FOAM AND THEIR USE |
-
1961
- 1961-06-05 GB GB2017261A patent/GB942845A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2514542A1 (en) * | 1974-04-04 | 1975-10-23 | Leer Koninklijke Emballage | METHOD OF MANUFACTURING POLYAMINE-FORMALDEHYDE-FURFURYL ALCOHOL FOAM AND THEIR USE |
US4016111A (en) | 1974-04-04 | 1977-04-05 | Koninklijke Emballage Industrie Van Leer B.V. | Non-burning, class 1 rating, foams and a method of producing same |
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