GB1185258A - A Process for the Production of Free-Flowing Paraformaldehyde - Google Patents
A Process for the Production of Free-Flowing ParaformaldehydeInfo
- Publication number
- GB1185258A GB1185258A GB21573/68A GB2157368A GB1185258A GB 1185258 A GB1185258 A GB 1185258A GB 21573/68 A GB21573/68 A GB 21573/68A GB 2157368 A GB2157368 A GB 2157368A GB 1185258 A GB1185258 A GB 1185258A
- Authority
- GB
- United Kingdom
- Prior art keywords
- paraformaldehyde
- passed
- pipe
- cooling gas
- chamber
- 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
- 229930040373 Paraformaldehyde Natural products 0.000 title abstract 3
- 229920002866 paraformaldehyde Polymers 0.000 title abstract 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 6
- 239000011324 bead Substances 0.000 abstract 2
- 239000000112 cooling gas Substances 0.000 abstract 2
- 241000273930 Brevoortia tyrannus Species 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0053028 | 1967-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1185258A true GB1185258A (en) | 1970-03-25 |
Family
ID=7054645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21573/68A Expired GB1185258A (en) | 1967-05-09 | 1968-05-07 | A Process for the Production of Free-Flowing Paraformaldehyde |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3595926A (forum.php) |
| AT (1) | AT280233B (forum.php) |
| BE (1) | BE714869A (forum.php) |
| CH (1) | CH498065A (forum.php) |
| CS (1) | CS158217B2 (forum.php) |
| DE (1) | DE1720472B1 (forum.php) |
| FR (1) | FR1565223A (forum.php) |
| GB (1) | GB1185258A (forum.php) |
| NL (1) | NL6806145A (forum.php) |
| NO (1) | NO122616B (forum.php) |
| SE (1) | SE330526B (forum.php) |
| YU (1) | YU33106B (forum.php) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4036891A (en) * | 1975-12-29 | 1977-07-19 | Moller Jens C T | Process for preparing paraformaldehyde |
| US4550213A (en) * | 1984-06-29 | 1985-10-29 | Celanese Corporation | Method of manufacture for paraformaldehyde prills |
| DD272576A3 (de) * | 1987-01-30 | 1989-10-18 | Leuna Werke Veb | Verfahren zur herstellung von koernigem paraformaldehyd |
| JP6043278B2 (ja) | 2010-04-09 | 2016-12-14 | パシラ ファーマシューティカルズ インコーポレーテッド | 多小胞リポソームを作製するための方法、大直径合成膜小胞を調製するための方法、および蒸発装置 |
| CN103335495B (zh) * | 2013-06-25 | 2015-05-06 | 国药控股星鲨制药（厦门）有限公司 | 一种快捷式器具干燥机 |
| CN113061219A (zh) * | 2021-03-29 | 2021-07-02 | 无锡熙源工程技术有限公司 | 一种多聚甲醛生产工艺 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1208887B (de) * | 1963-11-14 | 1966-01-13 | Degussa | Verfahren zum Herstellen von freifliessendem Paraformaldehyd |
-
1967
- 1967-05-09 DE DE19671720472 patent/DE1720472B1/de active Pending
- 1967-06-14 SE SE08357/67A patent/SE330526B/xx unknown
-
1968
- 1968-02-28 NO NO68732A patent/NO122616B/no unknown
- 1968-03-19 YU YU623/68A patent/YU33106B/xx unknown
- 1968-04-25 CS CS307968A patent/CS158217B2/cs unknown
- 1968-05-01 NL NL6806145A patent/NL6806145A/xx unknown
- 1968-05-02 AT AT424968A patent/AT280233B/de not_active IP Right Cessation
- 1968-05-07 GB GB21573/68A patent/GB1185258A/en not_active Expired
- 1968-05-08 CH CH687868A patent/CH498065A/de not_active IP Right Cessation
- 1968-05-08 BE BE714869D patent/BE714869A/xx not_active IP Right Cessation
- 1968-05-09 FR FR1565223D patent/FR1565223A/fr not_active Expired
-
1969
- 1969-10-24 US US869393A patent/US3595926A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CS158217B2 (forum.php) | 1974-10-15 |
| SE330526B (forum.php) | 1970-11-23 |
| AT280233B (de) | 1970-04-10 |
| DE1720472B1 (de) | 1971-10-07 |
| YU33106B (en) | 1976-04-30 |
| YU62368A (en) | 1975-10-31 |
| CH498065A (de) | 1970-10-31 |
| FR1565223A (forum.php) | 1969-04-25 |
| BE714869A (forum.php) | 1968-11-08 |
| NL6806145A (forum.php) | 1968-11-11 |
| US3595926A (en) | 1971-07-27 |
| NO122616B (forum.php) | 1971-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PE20 | Patent expired after termination of 20 years |