GB753142A - Improvements in or relating to cationic urea-formaldehyde resin and process therefor - Google Patents
Improvements in or relating to cationic urea-formaldehyde resin and process thereforInfo
- Publication number
- GB753142A GB753142A GB2350/54A GB235054A GB753142A GB 753142 A GB753142 A GB 753142A GB 2350/54 A GB2350/54 A GB 2350/54A GB 235054 A GB235054 A GB 235054A GB 753142 A GB753142 A GB 753142A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- formaldehyde
- resin
- under acid
- acid conditions
- 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
- C08G12/043—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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
A cationic polyalkylene-polyamine modified urea-formaldehyde resin for producing paper of improved wet strength is prepared by cooling to at least 10 DEG C. an aqueous solution of the resin and separating the resulting precipitate. The resin is prepared by reacting 1.90 to 2.10 moles of formaldehyde with 0.90 mol. of urea and modifying with 3 to 30 per cent by weight, based on the urea, of a polyalkylenepolyamine of the general formula H2N(CnH2nHN)xH, where n is 2 or more and x is 2 or more, e.g. diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine and the corresponding polypropylene and polybutylene polyamines. The ingredients may be heated for a short time under alkaline conditions and then under acid conditions, or entirely under acid conditions until the required viscosity is obtained. Alternatively the urea and formaldehyde may be reacted under alkaline conditions followed by the addition of the nitrogen base and final reaction under acid conditions to the required viscosity. In an example the resin solution was cooled by the addition of ice and a viscous gummy precipitate obtained. After the separation of the resin by usual methods the filtrate may be concentrated and the urea-formaldehyde ratio adjusted, or paraformaldehyde, dimethylolurea or a concentrated formaldehyde solution added directly and then the ratio again adjusted and the modifier added. Specification 663,736 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US753142XA | 1953-10-12 | 1953-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB753142A true GB753142A (en) | 1956-07-18 |
Family
ID=22124900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2350/54A Expired GB753142A (en) | 1953-10-12 | 1954-01-26 | Improvements in or relating to cationic urea-formaldehyde resin and process therefor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB753142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1092195B (en) * | 1957-04-18 | 1960-11-03 | Boehme Fettchemie Gmbh | Process for the production of textile auxiliaries |
| DE1187794B (en) * | 1958-11-12 | 1965-02-25 | Basf Ag | Process for the production of solution-stable, cation-active condensation products from urea, ethylene diamine and formaldehyde |
-
1954
- 1954-01-26 GB GB2350/54A patent/GB753142A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1092195B (en) * | 1957-04-18 | 1960-11-03 | Boehme Fettchemie Gmbh | Process for the production of textile auxiliaries |
| DE1187794B (en) * | 1958-11-12 | 1965-02-25 | Basf Ag | Process for the production of solution-stable, cation-active condensation products from urea, ethylene diamine and formaldehyde |
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