DE578873C - Process for the production of films and foils from condensation products of ureas or urea derivatives and aldehydes - Google Patents
Process for the production of films and foils from condensation products of ureas or urea derivatives and aldehydesInfo
- Publication number
- DE578873C DE578873C DEW86056D DEW0086056D DE578873C DE 578873 C DE578873 C DE 578873C DE W86056 D DEW86056 D DE W86056D DE W0086056 D DEW0086056 D DE W0086056D DE 578873 C DE578873 C DE 578873C
- Authority
- DE
- Germany
- Prior art keywords
- films
- condensation products
- ureas
- aldehydes
- urea derivatives
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Moulding By Coating Moulds (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
Verfahren zur Herstellung von Filmen und Folien aus Kondensationsprodukten von Harnstoffen oder Harnstoffderivaten und Aldehyden Im Patent 536 839 ist vorgeschlagen, aus Kondensationsprodukten von Harnstoffen oder Harnstoffderivaten und Aldehyden endlose Filme oder Folien unter Zugabe von Weichmachungsmitteln, wie Glycerin oder Cyclohexanol, dadurch herzustellen, daß man eine in der Kälte zähflüssige wässerige Lösung des mit dem Weichmachungsmittel versetzten Kondensationsproduktes auf eine fortschreitend bewegte Gießunterlage auffließen läßt und die sich bildende dünne Schicht zur weiteren Durchführung der Polymerisation so lange erwärmt, bis die anfangs auf der Unterlage klebende Schicht ihre oberflächliche Klebrigkeit verliert und sich bei der nunmehr erfolgenden Abnahme von der Unterlage glatt abziehen läßt.Process for the production of films and sheets from condensation products of ureas or urea derivatives and aldehydes In patent 536 839 it is proposed from condensation products of ureas or urea derivatives and aldehydes endless films or sheets with the addition of plasticizers such as glycerine or Cyclohexanol, to be produced by using an aqueous liquid that is viscous in the cold Solution of the condensation product added with the plasticizer to a progressively moving casting base can flow and the thin that is formed Layer for further implementation of the polymerization is heated until the beginning The layer adhering to the substrate loses its surface tack and can be peeled off smoothly from the base when it is now removed.
Nun hat sieh gezeigt, daß durch den Zusatz von Glycerin oder eines ähnlichen Weichmachungsmittels allein bei Filmen aus Kondensationsprodukten von Harnstoffen oder Harnstoffderivaten und Aldehyden noch nicht ein praktisch genügend hoher Grad vor. Biegsamkeit und Geschmeidigkeit erreicht wird, um die Filme in dieser Hinsicht den üblichen Folien aus Celluloseverbindungen, wie sie z. B. unter dem Handelsnamen Transparit und Cellophan bekannt sind, gleichwertig zu machen. Versuche haben ergeben, daß ein Film, der in seiner Masse außer den Harnstoffaldehydkondensationsprodukten nur Glycerin enthält, mehr oder weniger spröde ist und sich daher in allen den Fällen, wo es, wie z. B. bei Verpackungen, auf große elastische Nachgiebigkeit der verwendeten Folie ankommt, nicht mit Vorteil verwenden läßt.It has now been shown that by adding glycerine or one similar softening agent alone in films made from condensation products of Urea or urea derivatives and aldehydes are not yet practically sufficient high degree before. Flexibility and suppleness is achieved to the films in this With regard to the usual films made of cellulose compounds, as they are, for. B. under the Trade names Transparit and Cellophane are known to make them equivalent. try have shown that a film which in its mass apart from the urea aldehyde condensation products contains only glycerine, is more or less brittle and therefore in all cases where it, such as B. in packaging, on great elastic resilience of the used Foil arrives, can not be used with advantage.
Nach der Erfindung wird nun ein weitgehend biegsamer und geschmeidiger Film aus Kondensationsprodukten von Aldehyden und Harnstoffen oder Harnstoffderivaten unter Zusatz eines Weichmachungsmittels dadurch erreicht, daß die bei dem eingangs beschriebenen Herstellungsverfahren abgezogene Schicht nur so weit nachgehärtet wird, daß der fertige Film in seiner Masse noch wasserhaltig ist. Auf diese Weise ist die Sicherheit gegeben, daß der Film die Menge Wasser, die er beim Verlassen der Gießunterlage in seiner Masse aufweist, bei der weiteren Behandlung im wesentlichen nicht mehr verliert.. Das Glycerin oder sonstige Weichmachungsmittel dient dabei vor allem dazu, im Film diese Menge Wasser festzuhalten, welche die gewünschte hohe Biegsamkeit des Films gewährleistet und durch die Wirkung des Glycerins am Eintrocknen in der fertigen Folie verhindert wird.According to the invention, a largely flexible and pliable one is now Film made from condensation products of aldehydes and ureas or urea derivatives achieved with the addition of a plasticizer that the at the beginning described manufacturing process peeled layer only so far post-cured becomes that the finished film is still water-containing in its mass. In this way you can be sure that the film has the amount of water it left on the casting base in its mass, in the further treatment essentially no longer loses .. The glycerine or other plasticizers are used above all to retain the amount of water in the film that is the desired high Flexibility of the film is ensured and the effect of glycerine on drying in the finished film is prevented.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW86056D DE578873C (en) | 1928-09-06 | 1930-12-23 | Process for the production of films and foils from condensation products of ureas or urea derivatives and aldehydes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE318580X | 1928-09-06 | ||
| DEW86056D DE578873C (en) | 1928-09-06 | 1930-12-23 | Process for the production of films and foils from condensation products of ureas or urea derivatives and aldehydes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE578873C true DE578873C (en) | 1933-06-17 |
Family
ID=6151076
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEW80311D Expired DE536839C (en) | 1928-09-06 | 1928-09-07 | Process for the production of films and foils from condensation products of ureas or urea derivatives and aldehydes |
| DEW86056D Expired DE578873C (en) | 1928-09-06 | 1930-12-23 | Process for the production of films and foils from condensation products of ureas or urea derivatives and aldehydes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEW80311D Expired DE536839C (en) | 1928-09-06 | 1928-09-07 | Process for the production of films and foils from condensation products of ureas or urea derivatives and aldehydes |
Country Status (4)
| Country | Link |
|---|---|
| DE (2) | DE536839C (en) |
| FR (1) | FR661598A (en) |
| GB (2) | GB298631A (en) |
| NL (1) | NL25255C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2418797A (en) * | 1939-04-01 | 1947-04-08 | Standard Oil Co | Continuous process for polymerizing olefins |
| DE1118395B (en) * | 1951-05-12 | 1961-11-30 | Du Pont | Process for the production of structures consisting of high molecular weight polymers, such as films or threads |
| JP2626783B2 (en) * | 1988-02-04 | 1997-07-02 | 鐘淵化学工業株式会社 | Method and apparatus for treating edge of resin film |
-
0
- NL NL25255D patent/NL25255C/xx active
-
1928
- 1928-09-07 DE DEW80311D patent/DE536839C/en not_active Expired
- 1928-09-25 GB GB27473/28A patent/GB298631A/en not_active Expired
- 1928-10-08 FR FR661598D patent/FR661598A/en not_active Expired
-
1929
- 1929-02-15 GB GB5151/29A patent/GB318580A/en not_active Expired
-
1930
- 1930-12-23 DE DEW86056D patent/DE578873C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE536839C (en) | 1931-10-27 |
| NL25255C (en) | |
| GB298631A (en) | 1929-12-17 |
| GB318580A (en) | 1930-04-03 |
| FR661598A (en) | 1929-08-01 |
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