Patent US4287264A successfully refreshed from Google Patents.
US4287264A
Expired / Lapsed
US
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Heat sensitive coating
Assignee: Labelon Corp
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Filing: 1980-03-07
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Granted: 1981-09-01
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Expires: 2000-03-07
Abstract
Abstract A color forming heat sensitive coating composition comprising a color forming amount of a finely divided homogenous basic 3,3-bisarylphthalane derivative and a color developing amount of a finely divided solid phenyl derivative which at thermal printing temperature is at least partly fluidizable and capable of a color forming reaction with said 3,3-bisarylphthalane compound dispersed in a polyvinyl alcohol carrier is disclosed wherein the improvement comprises the addition of an anti-sticking amount of a functional filler which may be a di(lower alkyl)dithiocarbamate or lower alkylxanthate of lead, zinc, cadmium and alkaline earth metals or a tetra (lower alkyl)thiuram disulfide or a di(lower alkyl) xanthogen.
Inventors
- 👤 Barry L. Marginean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:39
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/337; B41M5/3375; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
In a color forming heat sensitive coating composition comprising a color forming amount of a finely divided homogenous basic 3,3'-bisarylphthalane derivative and a color developing amount of a finely divided solid phenyl derivative which at thermal printing temperature is at least partly fluidizable and capable of a color forming reaction with said 3,3-bisarylphthalane compound dispersed in a polyvinyl alcohol carrier, wherein the improvement comprises the presence of an antisticking amount of a functional filler of the general formula ##STR13## wherein X represents a bond or a metal selected from the group consisting of lead, zinc, cadmium and alkaline earth metal metals and Y represents lower alkyloxy or lower dialkylamino--therefor.
Claim 2
Dependent Claim
109 words
In a color forming heat sensitive coating composition comprising a color forming amount of a finely divided homogenous basic 3,3'-bisarylphthalane derivative and a color developing amount of a finely divided solid phenyl derivative which at thermal printing temperature is at least partly fluidizable and capable of a color forming reaction with said 3,3-bisarylphthalane compound dispersed in a polyvinyl alcohol carrier, wherein the improvement comprises the presence of an antisticking amount of a functional filler of the general formula ##STR13## wherein X represents a bond or a metal selected from the group consisting of lead, zinc, cadmium and alkaline earth metal metals and Y represents lower alkyloxy or lower dialkylamino--therefor.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein the antistick compound is present in an amount of from 2 to about 60% by weight of the dry solid content of the composition.
Claim 4
Dependent Claim
34 words
The composition of claim 1 wherein the antistick compound is selected from the group consisting of di(loweralkyl)dithiocarbamates and lower alkylxanthates of lead, zinc, cadmium and alkaline earth metals and tetra(lower alkyl)thiuram disulfides and di(loweralkyl)xanthogens.
Claim 5
Dependent Claim
12 words
The composition of claim 3 wherein the functional filler is a di(loweralkyl)dithiocarbamate.
Claim 6
Dependent Claim
10 words
The composition of claim 4 wherein the dithiocarbamate is di-n-butyldithiocarbamate.
Claim 7
Dependent Claim
13 words
The composition of claim 5 wherein the 3,3-bisarylphthalane is leuco crystal violet lactone.
Claim 8
Dependent Claim
27 words
The composition of claim 6 wherein the relative amount of polyvinyl alcohol to crystal violet lactone and the phenolic material is from 5% to 40% by weight.
Claim 9
Dependent Claim
15 words
The composition of claim 7 wherein the amount of di-n-butyldithiocarbamate is about 40 weight percent.
Claim 10
Dependent Claim
13 words
A thermo responsive material comprising paper coated with the composition of claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |