GB1288255A - - Google Patents
Info
- Publication number
- GB1288255A GB1288255A GB4969169A GB4969169A GB1288255A GB 1288255 A GB1288255 A GB 1288255A GB 4969169 A GB4969169 A GB 4969169A GB 4969169 A GB4969169 A GB 4969169A GB 1288255 A GB1288255 A GB 1288255A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methyl
- pyran
- crystal violet
- violet lactone
- chlorodiphenyl
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/132—Chemical colour-forming components; Additives or binders therefor
- B41M5/136—Organic colour formers, e.g. leuco dyes
- B41M5/15—Spiro-pyrans
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Color Printing (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691900178 DE1900178A1 (de) | 1969-01-03 | 1969-01-03 | Farbreaktionspapier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1288255A true GB1288255A (de) | 1972-09-06 |
Family
ID=5721674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4969169A Expired GB1288255A (de) | 1969-01-03 | 1969-10-09 |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT296343B (de) |
| BE (1) | BE742968A (de) |
| CH (1) | CH548288A (de) |
| DE (1) | DE1900178A1 (de) |
| FR (1) | FR2030794A5 (de) |
| GB (1) | GB1288255A (de) |
| NL (1) | NL6918711A (de) |
-
1969
- 1969-01-03 DE DE19691900178 patent/DE1900178A1/de active Pending
- 1969-10-09 GB GB4969169A patent/GB1288255A/en not_active Expired
- 1969-10-09 CH CH1519269A patent/CH548288A/de not_active IP Right Cessation
- 1969-11-28 AT AT1115169A patent/AT296343B/de not_active IP Right Cessation
- 1969-12-08 FR FR6942324A patent/FR2030794A5/fr not_active Expired
- 1969-12-11 BE BE742968D patent/BE742968A/xx unknown
- 1969-12-12 NL NL6918711A patent/NL6918711A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE742968A (de) | 1970-05-14 |
| FR2030794A5 (de) | 1970-11-13 |
| NL6918711A (de) | 1970-07-07 |
| CH548288A (de) | 1974-04-30 |
| AT296343B (de) | 1972-02-10 |
| DE1900178A1 (de) | 1970-07-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |