CH499561A - Procedimento per la preparazione di alti polimeri della formaldeide termicamente stabili - Google Patents
Procedimento per la preparazione di alti polimeri della formaldeide termicamente stabiliInfo
- Publication number
- CH499561A CH499561A CH508265A CH508265A CH499561A CH 499561 A CH499561 A CH 499561A CH 508265 A CH508265 A CH 508265A CH 508265 A CH508265 A CH 508265A CH 499561 A CH499561 A CH 499561A
- Authority
- CH
- Switzerland
- Prior art keywords
- concentration
- hcho
- reacting
- suspension
- aqueous solution
- Prior art date
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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/08—Polymerisation of formaldehyde
-
- 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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/12—Polymerisation of acetaldehyde or cyclic oligomers thereof
-
- 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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/14—Polymerisation of single aldehydes not provided for in groups C08G2/08 - C08G2/12
-
- 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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/16—Polymerisation of single ketones
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT809964 | 1964-04-13 | ||
| IT2645264 | 1964-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH499561A true CH499561A (it) | 1970-11-30 |
Family
ID=26325971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH508265A CH499561A (it) | 1964-04-13 | 1965-04-12 | Procedimento per la preparazione di alti polimeri della formaldeide termicamente stabili |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3425991A (it) |
| BE (1) | BE662371A (it) |
| CH (1) | CH499561A (it) |
| DE (1) | DE1271398B (it) |
| FR (1) | FR1438599A (it) |
| GB (1) | GB1060912A (it) |
| NL (1) | NL143599B (it) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60232085A (ja) * | 1984-04-28 | 1985-11-18 | Kanegafuchi Chem Ind Co Ltd | 無菌的濾過方法 |
| US5852208A (en) * | 1996-08-30 | 1998-12-22 | Dixie Chemical Company, Inc. | Method of producing compounds containing acyloxyalkoxy groups from alcohols |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1249510B (it) * | 1957-09-06 | 1967-09-07 | ||
| AT217211B (de) * | 1957-09-06 | 1961-09-11 | Du Pont | Verfahren zur Polymerisation von Formaldehyd zu hochmolekularem Polyoxymethylen |
| US3027352A (en) * | 1958-02-28 | 1962-03-27 | Celanese Corp | Copolymers |
-
1965
- 1965-04-01 NL NL656504119A patent/NL143599B/xx unknown
- 1965-04-08 GB GB15004/65A patent/GB1060912A/en not_active Expired
- 1965-04-12 CH CH508265A patent/CH499561A/it not_active IP Right Cessation
- 1965-04-12 BE BE662371D patent/BE662371A/xx unknown
- 1965-04-12 US US448578A patent/US3425991A/en not_active Expired - Lifetime
- 1965-04-12 DE DEP1271A patent/DE1271398B/de not_active Withdrawn
- 1965-04-12 FR FR12835A patent/FR1438599A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3425991A (en) | 1969-02-04 |
| NL6504119A (it) | 1965-10-14 |
| NL143599B (nl) | 1974-10-15 |
| DE1271398B (de) | 1968-06-27 |
| FR1438599A (fr) | 1966-05-13 |
| BE662371A (it) | 1965-10-12 |
| GB1060912A (en) | 1967-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB906120A (en) | Improvements relating to concentrated urea-formaldehyde solutions | |
| CH499561A (it) | Procedimento per la preparazione di alti polimeri della formaldeide termicamente stabili | |
| DE2963396D1 (en) | Aqueous dispersions of oligomeric or polymeric plastics, a process for preparing same and their use | |
| GB1259747A (en) | Process for the preparation of aliphatic tertiary amides | |
| ATE24717T1 (de) | Verfahren zur herstellung von 3-picolin. | |
| ES436925A1 (es) | Un procedimiento para preparar acido cianurico. | |
| KR900701745A (ko) | 2-클로로-4-톨루엔술폰산의 제조방법 | |
| GB891268A (en) | Process for the production of water-insoluble nitrogenous polymers | |
| ATE68475T1 (de) | Verfahren zur reinigung von oxalsaeurediamid. | |
| SU461925A1 (ru) | Способ получени 3,3,8,8-тетраметил2,7-диоксаспиро (4,4) нонан-1,6диона | |
| SU487890A1 (ru) | Способ выделени аминазина | |
| GB1506437A (en) | Recycling process for the preparation of cyclohexanone oxime | |
| ES388142A2 (es) | Mejoras introducidas en el objeto de la patente principal. | |
| GR23273B (el) | Μεθοδος δια την παραγωγην αμινοξεων. | |
| GB978543A (en) | Improvements in and relating to polyacrolein bisulphite adducts | |
| GB1124149A (en) | Process for the preparation of ª‡-amino acids | |
| ES274221A1 (es) | Un procedimiento para preparar polimeros altos de formaldehido | |
| GB939905A (en) | A process for preparing a penillic acid and salts thereof | |
| DE3780920D1 (de) | Verfahren zur herstellung von 4(5)-nitroimidazol-5(4)-carbonsaeuren. | |
| GB1361078A (en) | Method of controlling urea system | |
| GB1062329A (en) | Improvements in the production of sulphamic acid | |
| GB1260806A (en) | Optical resolution of d,l-lysine | |
| SU429654A1 (ru) | Способ получени N-изоникотиноил-N'-(бета, бета, бета-трифторпропионил)гидразина | |
| ES444510A1 (es) | Procedimiento para la preparacion de bis-u-cloroamidas de a-cidos dicarboxilicos alifaticos saturados. | |
| GB1417820A (en) | Process for the production of guanidine salts of aliphatic mercaptosulphonic acids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |