NL7009901A - - Google Patents
Info
- Publication number
- NL7009901A NL7009901A NL7009901A NL7009901A NL7009901A NL 7009901 A NL7009901 A NL 7009901A NL 7009901 A NL7009901 A NL 7009901A NL 7009901 A NL7009901 A NL 7009901A NL 7009901 A NL7009901 A NL 7009901A
- Authority
- NL
- Netherlands
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
- C07C45/83—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by extractive distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US77499A US3128313A (en) | 1960-12-22 | 1960-12-22 | Preparation of concentrated formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7009901A true NL7009901A (de) | 1970-10-26 |
Family
ID=22138440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7009901A NL7009901A (de) | 1960-12-22 | 1970-07-03 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3128313A (de) |
| DE (1) | DE1191354B (de) |
| GB (1) | GB931688A (de) |
| NL (1) | NL7009901A (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3519650A (en) * | 1967-09-05 | 1970-07-07 | Degussa | Purification of trioxane |
| CN114853590A (zh) * | 2022-04-24 | 2022-08-05 | 漳州市龙文翰苑化工有限公司 | 一种新型的聚甲醛解聚方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE470267C (de) * | 1923-05-05 | 1929-01-14 | Chem Fab Von Heyden Akt Ges | Verfahren zur Herstellung methylalkoholfreier Formaldehydloesungen unter Gewinnung von Methylalkohol |
| US2256497A (en) * | 1937-01-12 | 1941-09-23 | Heyden Chemical Corp | Process of purifying and concentrating formaldehyde solutions |
| GB737023A (en) * | 1952-03-18 | 1955-09-21 | Celanese Corp | Solutions containing available formaldehyde |
| BE560841A (de) * | 1953-07-16 | |||
| US2798033A (en) * | 1954-01-07 | 1957-07-02 | Allied Chem & Dye Corp | Separation of methanol from aqueous formaldehyde |
| DE1138752B (de) * | 1958-12-19 | 1962-10-31 | Hoechst Ag | Verfahren zur Herstellung von reinem Formaldehyd |
-
1960
- 1960-12-22 US US77499A patent/US3128313A/en not_active Expired - Lifetime
-
1961
- 1961-12-18 GB GB45192/61A patent/GB931688A/en not_active Expired
- 1961-12-22 DE DEP28471A patent/DE1191354B/de active Pending
-
1970
- 1970-07-03 NL NL7009901A patent/NL7009901A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB931688A (en) | 1963-07-17 |
| US3128313A (en) | 1964-04-07 |
| DE1191354B (de) | 1965-04-22 |