US4481093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet curable basecoats for vacuum metallization
Assignee: Stamicarbon BV
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Filing: 1983-09-30
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Granted: 1984-11-06
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Expires: 2003-09-30
Abstract
Abstract An ultraviolet light-curable liquid coating composition for molded plastic objects is disclosed. The composition is a liquid mixture of a polyurethane oligomer polyacrylate and an hydroxy-functional polyacrylate ester. The polyacrylate ester is present in an amount of from more than 50% up to 70% of total polyacrylate, and the composition is in solution in alcoholic solvent providing a solids content of from 65% to 90%. A photoinitiator is included to render the composition curable upon exposure to ultraviolet light.
Inventors
- 👤 Edward J. Murphy
- 👤 Ronald J. Lewarchik
- 👤 Jeffrey W. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/16; C08J7/18; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C09; C09D; C09D4/00; Y; Y10; Y10S; Y10S525/00; Y10S525/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
An ultraviolet light-curable liquid coating composition for molded plastic objects comprising an alcoholic solvent solution of: (1) a polyurethane oligomer polyacrylate which is a derivative of an organic solvent-soluble hydroxy functional polyester having an average molecular weight of 500-1500 and an average of at least about 2.0 hydroxy groups per molecule, each hydroxy group carrying an acrylate ester group by a plurality of urethane linkages; and (2) an hydroxy-functional polyacrylate which is constituted by an organic polyol having a molecular weight below 500 and at least about 3 hydroxy groups per molecule, said polyol being esterified to contain at least about 1.5 acrylate ester groups per molecule and having at least about 0.5 unreacted hydroxy groups per molecule; said polyacrylate ester being present in an amount of from more than 50% up to 70% of total polyacrylate, and said solution having a solids content of from 65% to 90%, said solution further including a photoinitiator to render the composition curable on exposure to ultraviolet light.
Claim 2
Dependent Claim
165 words
An ultraviolet light-curable liquid coating composition for molded plastic objects comprising an alcoholic solvent solution of: (1) a polyurethane oligomer polyacrylate which is a derivative of an organic solvent-soluble hydroxy functional polyester having an average molecular weight of 500-1500 and an average of at least about 2.0 hydroxy groups per molecule, each hydroxy group carrying an acrylate ester group by a plurality of urethane linkages; and (2) an hydroxy-functional polyacrylate which is constituted by an organic polyol having a molecular weight below 500 and at least about 3 hydroxy groups per molecule, said polyol being esterified to contain at least about 1.5 acrylate ester groups per molecule and having at least about 0.5 unreacted hydroxy groups per molecule; said polyacrylate ester being present in an amount of from more than 50% up to 70% of total polyacrylate, and said solution having a solids content of from 65% to 90%, said solution further including a photoinitiator to render the composition curable on exposure to ultraviolet light.
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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |