GB1331580A - Electrophoresis film and block manufacture - Google Patents
Electrophoresis film and block manufactureInfo
- Publication number
- GB1331580A GB1331580A GB1480470A GB1480470A GB1331580A GB 1331580 A GB1331580 A GB 1331580A GB 1480470 A GB1480470 A GB 1480470A GB 1480470 A GB1480470 A GB 1480470A GB 1331580 A GB1331580 A GB 1331580A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- cellulose diacetate
- film
- films
- mass
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/12—Cellulose acetate
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44747—Composition of gel or of carrier mixture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
- B29K2001/08—Cellulose derivatives
- B29K2001/12—Cellulose acetate
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Dispersion Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Pathology (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Moulding By Coating Moulds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
1331580 Cellulose acetate films G B DEL CAMPO 9 Sept 1970 [28 April 1970] 14804/73 Divided out of 1325565 Heading B5B A process for preparing films and blocks of cellulose diacetate suitable for use in electrophoresis comprises dissolving cellulose diacetate in diacetone alcohol at 80‹-90‹ C., allowing the solution to cool to 60‹ C., adding under constant stirring at 60‹ C. a mixture containing a major proportion of a water-miscible swelling agent (e.g. methanol) and a minor proportion of a water-miscible solvent (e.g. diacetone alcohol) to obtain a swollen mass of cellulose diacetate, casting this mass from a spreading box at 60‹ C., conditioning the cast film at a temperature between 20‹ and 25‹ C. in an atmosphere saturated with methanol and water vapour and finally immersing the conditioned film into water to obtain a film of cellulose diacetate aqueous gel. The ratio of swelling agent to solvent in the mixture is preferably 10 : 1. The films produced by this process are packaged in a humid or wet state. The swollen mass may be cast from the spreading box on to a travelling belt for continuous production or between glass plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1297074D GB1297074A (en) | 1970-03-26 | 1970-03-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2402970 | 1970-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1331580A true GB1331580A (en) | 1973-09-26 |
Family
ID=11211567
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1480470A Expired GB1331580A (en) | 1970-03-26 | 1970-03-26 | Electrophoresis film and block manufacture |
| GB4312970A Expired GB1325565A (en) | 1970-04-28 | 1970-09-09 | Process for obtaining films and blocks of cellulose acetate |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4312970A Expired GB1325565A (en) | 1970-04-28 | 1970-09-09 | Process for obtaining films and blocks of cellulose acetate |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2045222C3 (en) |
| ES (1) | ES383851A1 (en) |
| FR (1) | FR2061077A5 (en) |
| GB (2) | GB1331580A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8428876D0 (en) * | 1984-11-15 | 1984-12-27 | Ciba Geigy Ag | Diagnostic strips |
-
1970
- 1970-03-26 GB GB1480470A patent/GB1331580A/en not_active Expired
- 1970-09-08 FR FR7032520A patent/FR2061077A5/fr not_active Expired
- 1970-09-09 GB GB4312970A patent/GB1325565A/en not_active Expired
- 1970-09-12 DE DE19702045222 patent/DE2045222C3/en not_active Expired
- 1970-09-14 ES ES383851A patent/ES383851A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2045222C3 (en) | 1981-05-14 |
| DE2045222A1 (en) | 1971-12-09 |
| DE2045222B2 (en) | 1980-08-07 |
| ES383851A1 (en) | 1973-10-01 |
| GB1325565A (en) | 1973-08-01 |
| FR2061077A5 (en) | 1971-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 427A | Application made for restoration (sect. 27/1949) | ||
| 427C | Application for amendment of specification now open to opposition (sect. 27/1949) | ||
| PE20 | Patent expired after termination of 20 years |