US3973058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for printing interlayers for laminated safety glass
Assignee: Monsanto Co
•
Filing: 1974-12-23
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Granted: 1976-08-03
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Expires: 1994-12-23
Abstract
Abstract Disclosed herein is an improved printing method for tinting synthetic resin sheets used in the manufacture of laminated safety glass. The improvement comprises using an ink containing 12 to 35% by weight, based on the total weight of dye and solvent, of one or more dyes dissolved in an N-lower alkyl-pyrrolidone solvent wherein the alkyl group contains from 1 to 4 carbon atoms.
Inventors
- 👤 John L. Grover
- 👤 Wilson H. Power
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:10
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/033; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10247; B32B17/10256; B32B17/10275; B32B17/10339; B32B17/1055; B32B17/10651; B32B17/1066; B32B17/10761; B41; B41M; B41M1/00; B41M1/26; B41M1/30; B32B2307/00; B32B2307/40; B32B2307/402; B32B2307/4026; B32B2605/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24926; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
In the process for printing polyvinyl butyral sheet material used as a component in laminated safety glass said process comprising printing the polyvinyl butyral sheet material with an ink comprising a solvent and at least one dye dissolved in the solvent, the improvement which comprises using an ink having a dye concentration in the range of from 12 to 35% by weight wherein an N-lower alkyl pyrrolidone is used as the major component of the solvent for the ink.
Claim 2
Dependent Claim
79 words
In the process for printing polyvinyl butyral sheet material used as a component in laminated safety glass said process comprising printing the polyvinyl butyral sheet material with an ink comprising a solvent and at least one dye dissolved in the solvent, the improvement which comprises using an ink having a dye concentration in the range of from 12 to 35% by weight wherein an N-lower alkyl pyrrolidone is used as the major component of the solvent for the ink.
Claim 3
Dependent Claim
12 words
An improved process as in claim 1 wherein the solvent is N-methyl-pyrrolidone.
Claim 4
Dependent Claim
40 words
An improved process as in claim 2 wherein the solvent contains minor amounts of a co-solvent selected from the group consisting of toluene, xylene, dialkyl formamides and dialkyl acetamides wherein the alkyl group contains from 1 to 4 carbon atoms.
Claim 5
Dependent Claim
25 words
An improved process as in claim 1 wherein the dye concentration is above 16% by weight based on the total weight of dye and solvent.
Claim 6
Dependent Claim
82 words
In the process for printing a gradient band on polyvinyl butyral sheet material used in the manufacture of laminated safety glass said process comprising printing the polyvinyl butyral sheet material with an ink comprising a solvent and at least one dye dissolved in the solvent, the improvement which comprises using an ink dye having a dye concentration in the range of from 12 to 35% by weight wherein N-methyl pyrrolidone is used as the major component of the solvent for the ink.
Claim 7
Dependent Claim
82 words
In the process for printing a gradient band on polyvinyl butyral sheet material used in the manufacture of laminated safety glass said process comprising printing the polyvinyl butyral sheet material with an ink comprising a solvent and at least one dye dissolved in the solvent, the improvement which comprises using an ink dye having a dye concentration in the range of from 12 to 35% by weight wherein N-methyl pyrrolidone is used as the major component of the solvent for the ink.
Claim 8
Dependent Claim
40 words
An improved process as in claim 5 wherein the solvent contains minor amounts of a co-solvent selected from the group consisting of toluene, xylene, dialkyl formamides and dialkyl acetamides wherein the alkyl group contains from 1 to 4 carbon atoms.
Claim 9
Dependent Claim
31 words
An improved process as in claim 5 wherein the dye concentration is in the range of from 12 to 25% by weight based on the total weight of dye and solvent.
Claim 10
Dependent Claim
87 words
In the process for printing a gradient band on polyvinyl butyral sheet material used in the manufacture of laminated safety glass said process comprising printing the thermoplastic sheet material with an ink comprising a solvent and at least one dye dissolved in the solvent, the improvement which comprises using an N-lower alkyl pyrrolidone as the sole solvent for the ink wherein the dye concentration in the ink is in the range of from 12 to 25% by weight based on the total weight of dye and solvent.
Claim 11
Dependent Claim
87 words
In the process for printing a gradient band on polyvinyl butyral sheet material used in the manufacture of laminated safety glass said process comprising printing the thermoplastic sheet material with an ink comprising a solvent and at least one dye dissolved in the solvent, the improvement which comprises using an N-lower alkyl pyrrolidone as the sole solvent for the ink wherein the dye concentration in the ink is in the range of from 12 to 25% by weight based on the total weight of dye and solvent.
References Cited (Backward Citations)
US2739080A
Cited
US3029122A
Cited
US2989360A
Cited
US3008858A
Cited
US3088837A
Cited
US3265461A
Cited
US3346322A
Cited
US3591406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |