IT596887A - - Google Patents
Info
- Publication number
- IT596887A IT596887A IT596887DA IT596887A IT 596887 A IT596887 A IT 596887A IT 596887D A IT596887D A IT 596887DA IT 596887 A IT596887 A IT 596887A
- Authority
- IT
- Italy
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
- C07D307/48—Furfural
- C07D307/50—Preparation from natural products
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH161749D DE747454C (de) | 1940-03-02 | 1940-03-02 | Verfahren zur Herstellung von hochpolymeren Zellstoffen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT596887A true IT596887A (pt) |
Family
ID=7183518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT596887D IT596887A (pt) | 1940-03-02 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE445331A (pt) |
| DE (1) | DE747454C (pt) |
| DK (1) | DK63544C (pt) |
| FR (1) | FR870328A (pt) |
| IT (1) | IT596887A (pt) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE967570C (de) * | 1941-12-23 | 1957-11-21 | Phrix Werke Akt Ges | Verfahren zur Erzeugung eines fuer die Viskoseherstellung geeigneten Zellstoffes aus pentosanreichen Einjahrespflanzen |
| DE968585C (de) * | 1942-01-10 | 1958-03-06 | Phrix Werke Ag | Verfahren zur Erzeugung eines fuer die Kunstfaserherstellung geeigneten Zellstoffesaus Kiefernholz |
| DE969452C (de) * | 1942-03-20 | 1958-06-04 | Phrix Werke Ag | Verfahren zur Gewinnung von Kunstfaserzellstoffen |
| DE938229C (de) * | 1943-05-25 | 1956-01-26 | Phrix Werke Ag | Verfahren zur Herstellung eines fuer die chemische Weiterverarbeitung geeigneten Zellstoffes durch Aufschluss mit nicht kaustifizierten Laugen |
| US2999783A (en) * | 1957-10-05 | 1961-09-12 | Hodogaya Chemical Co Ltd | Process for simultaneous production of high alpha-pulp with furfural from latifoliate tree materials |
| ZA766073B (en) * | 1975-10-24 | 1977-09-28 | D Econimidis | Production of pulp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE77598C (de) * | E. RUDEL, Dresden-Neustadt, Königsbrückerstr. 91 | Verfahren zum Aufschliefsen von Pflanzenstoffen zur Zellstoffgewinnung | ||
| DE647913C (de) * | 1931-08-25 | 1937-07-19 | Holzhydrolyse A G | Verfahren zur Gewinnung von Pentosen aus stark pentosanehaltigen Pflanzenteilen |
| US1960812A (en) * | 1931-10-22 | 1934-05-29 | Groth Bertil Sixten | Manufacture of furfur |
| US2026900A (en) * | 1934-10-19 | 1936-01-07 | Kodama Kenta | Method of manufacturing refined pulp from straw of graminaceous plants |
| FR831702A (fr) * | 1937-02-20 | 1938-09-13 | Henkel & Cie Gmbh | Procédé de fabrication de carton-paille avec obtention simultanée de furfurol |
| FR847463A (fr) * | 1938-06-16 | 1939-10-10 | Pingris & Molley Fontaine Reun | Procédé de traitement des matières cellulosiques en vue de la préparation de la cellulose pure |
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0
- IT IT596887D patent/IT596887A/it unknown
-
1940
- 1940-03-02 DE DEH161749D patent/DE747454C/de not_active Expired
-
1941
- 1941-02-26 FR FR870328D patent/FR870328A/fr not_active Expired
-
1942
- 1942-04-24 BE BE445331D patent/BE445331A/xx unknown
- 1942-04-29 DK DK94142A patent/DK63544C/da active
Also Published As
| Publication number | Publication date |
|---|---|
| DE747454C (de) | 1944-10-04 |
| BE445331A (pt) | 1942-05-30 |
| DK63544C (da) | 1945-05-28 |
| FR870328A (fr) | 1942-03-10 |