GB378694A - Improvements in or relating to the production of papers for security purposes - Google Patents
Improvements in or relating to the production of papers for security purposesInfo
- Publication number
- GB378694A GB378694A GB27892/31A GB2789231A GB378694A GB 378694 A GB378694 A GB 378694A GB 27892/31 A GB27892/31 A GB 27892/31A GB 2789231 A GB2789231 A GB 2789231A GB 378694 A GB378694 A GB 378694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bausch
- paper
- oct
- lead
- 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
- QJYNZEYHSMRWBK-NIKIMHBISA-N 1,2,3,4,6-pentakis-O-galloyl-beta-D-glucose Chemical compound OC1=C(O)C(O)=CC(C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(O)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(O)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(O)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(O)C(O)=C(O)C=2)=C1 QJYNZEYHSMRWBK-NIKIMHBISA-N 0.000 abstract 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
- BRRSNXCXLSVPFC-UHFFFAOYSA-N 2,3,4-Trihydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C(O)=C1O BRRSNXCXLSVPFC-UHFFFAOYSA-N 0.000 abstract 1
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 150000005170 trihydroxybenzoic acids Chemical class 0.000 abstract 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
- D21H21/46—Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
Landscapes
- Paper (AREA)
- Color Printing (AREA)
Abstract
378,694. Security paper. BAUSCH, V., BAUSCH, T., and BAUSCH, F., (trading as SCHOELLER & BAUSCH, F.), Neu Kaliss, Mecklenburg, Germany. Oct. 7, 1931, No. 27892. Convention date, Oct. 7, 1930. [Class 96.] A security paper is made from a paper mass of pH = 3 to 5, and contains in the mass a carboxylic acid derivative of benzene or naphthalene or a derivative or compound thereof, such as di- or trihydroxybenzoic acids &c. as well as a reagent, such as ferric salts, and ferrocyanides of lead &c., which reacts by itself or in the presence of other substances to give colour reactions on the addition of an acid medium of pH less than 3. In an example paper pulp in the hollander or vat is treated with ferric salts and then lead or other ferrocyanide, the pH value being 4. A solution of equal parts of pyrogallolcarboxylic acid and pentagalloyl glucose reduced to pH = 3 to 3À5 by addition of alkali is then incorporated, preferably by drawing the finished paper therethrough or alternatively by spraying in the papermaking-machine, e.g. behind the couch rolls or between the presses.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE582530T | 1930-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB378694A true GB378694A (en) | 1932-08-18 |
Family
ID=6344578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27892/31A Expired GB378694A (en) | 1930-10-08 | 1931-10-07 | Improvements in or relating to the production of papers for security purposes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1864116A (en) |
| AT (1) | AT132051B (en) |
| DE (1) | DE582530C (en) |
| GB (1) | GB378694A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2622491A (en) * | 1948-10-04 | 1952-12-23 | Patent & Licensing Corp | Process of making multiply waterproofed sheets |
| NL264698A (en) * | 1960-02-19 | |||
| US3326744A (en) * | 1963-03-01 | 1967-06-20 | Eastman Kodak Co | Stain-free paper sized with starch or gelatin and aromatic organic acids |
| FR2647820B1 (en) * | 1989-06-01 | 1991-09-20 | Aussedat Rey | INFALSIFIABLE SECURITY PAPER AND AQUEOUS OR ORGANIC COMPOSITION USEFUL, IN PARTICULAR FOR MAKING PAPER INFALSIFIABLE |
| FR2650606B1 (en) * | 1989-08-07 | 1992-04-30 | Aussedat Rey | INFALSIFIABLE SECURITY PAPER AND AQUEOUS OR ORGANIC COMPOSITION USEFUL, IN PARTICULAR FOR MAKING PAPER INFALSIFIABLE |
-
1930
- 1930-10-08 DE DE1930582530D patent/DE582530C/en not_active Expired
-
1931
- 1931-10-03 US US566806A patent/US1864116A/en not_active Expired - Lifetime
- 1931-10-05 AT AT132051D patent/AT132051B/en active
- 1931-10-07 GB GB27892/31A patent/GB378694A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE582530C (en) | 1933-08-16 |
| US1864116A (en) | 1932-06-21 |
| AT132051B (en) | 1933-02-25 |
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