UST867023I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- Publication number
- UST867023I4 UST867023I4 US867023DH UST867023I4 US T867023 I4 UST867023 I4 US T867023I4 US 867023D H US867023D H US 867023DH US T867023 I4 UST867023 I4 US T867023I4
- Authority
- US
- United States
- Prior art keywords
- slurry
- defensive publication
- application
- published
- publication
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/08—Alkali cellulose
Definitions
- a process for making solid alkali cellulose comprising mixing and steeping wood pulp with an aqueous caustic soda solution to form a slurry, passing the slurry to a slurry press and then pressing the slurry to form solid alkali cellulose, and including the step of injecting live steam into the slurry as it is being passed to the slurry press so as to raise its temperature.
- the mixing and steeping operation may be carried out at a temperature of about 45 C. and the pressing operation at a temperature of about 55 C.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
a 3 7, 76 DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 0.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30 cents per sheet.
Applications published under the Detensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED OCTOBER 28, 1969 835,251 PROCESS FOR MAKING ALKALI CELLULOSE Donald A. Sharman, Conifers 99A Kelsey Lane, Balsall Common, near Coventry, Warwickshire, England Filed June 20, 1969. Published Oct. 28, 1969 Claims priority, application Great Britain, June 20, 1968, 29,351/68 Int. Cl. D21c 3/02 US. Cl. 162-90 No Drawing. 4 Pages Specification A process for making solid alkali cellulose comprising mixing and steeping wood pulp with an aqueous caustic soda solution to form a slurry, passing the slurry to a slurry press and then pressing the slurry to form solid alkali cellulose, and including the step of injecting live steam into the slurry as it is being passed to the slurry press so as to raise its temperature. The mixing and steeping operation may be carried out at a temperature of about 45 C. and the pressing operation at a temperature of about 55 C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29351/68A GB1261374A (en) | 1968-06-20 | 1968-06-20 | An improved process for making alkali cellulose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST867023I4 true UST867023I4 (en) | 1969-10-28 |
Family
ID=10290156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US867023D Pending UST867023I4 (en) | 1968-06-20 | 1969-06-20 | Defensive publication |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | UST867023I4 (en) |
| GB (1) | GB1261374A (en) |
-
1968
- 1968-06-20 GB GB29351/68A patent/GB1261374A/en not_active Expired
-
1969
- 1969-06-20 US US867023D patent/UST867023I4/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1261374A (en) | 1972-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2732289A1 (en) | PROCESS FOR OBTAINING GLUCOSE FROM CELLULOSIC VEGETABLE RAW MATERIALS | |
| US2224135A (en) | Making board products and recovering water solubles from fibrous ligno-cellulose material | |
| SE8202868L (en) | PROCEDURE FOR PREPARING CHEAP CELLULOSAMASSA | |
| UST867023I4 (en) | Defensive publication | |
| US2297635A (en) | Stereotype mat | |
| US2538742A (en) | Digesting lignocellulose with a rosin soap | |
| ES409498A1 (en) | Alkaline digestion of a mixture of cotton linters and fibrous vegetable material and product thereof | |
| US1389936A (en) | Method of making paper and fiber board | |
| US2269665A (en) | Preparation of celulose metal | |
| GB438436A (en) | Improvements in the production of cellulose and cellulosic products | |
| US3262839A (en) | Neutral to weakly alkaline sulfite process for the extraction of cellulose from cellulosic material | |
| US2215353A (en) | Process of making fiberboard | |
| UST867028I4 (en) | Defensive publication | |
| US1581671A (en) | Production of pulp and other products from wood | |
| US2581654A (en) | Dry process for making composite consolidated products with controlled presteaming of the raw materials | |
| US3455779A (en) | Process of forming moisture resistant hardboard containing tall oil | |
| Mobarak et al. | Fibreboard from exotic raw materials. I. Hardboard from rice straw pulps | |
| DE714937C (en) | Process for the production of semi-cellulose from wood, bamboo, straw, grass and other plants containing cellulose | |
| US1710752A (en) | Wood-pulp material | |
| DE522575C (en) | Process for the production of cellulose ethers | |
| US2794738A (en) | Fibrous board and sheet for insulation and other purposes of matted long cotton stalk fiber | |
| GB378722A (en) | Improvements in or relating to the treatment of cellulose-containing materials | |
| Fahmy et al. | A study of the production of hardboard from some indigenous agricultural residues | |
| UA132462U (en) | METHOD OF OBTAINING CELLULOSE MASS | |
| GB518887A (en) | A process for the production of pulp material from wood, straw, grasses and similar cellulose containing plants |