US4734333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Postformable ultraviolet curable coatings
Assignee: Stamicarbon BV
•
Filing: 1986-12-08
•
Granted: 1988-03-29
•
Expires: 2006-12-08
Abstract
Abstract A postformable ultraviolet curable primer coating composition is disclosed which consists essentially of: (A) from 10% to 80% of a linear acrylate-terminated polyurethane based on a polycarbonate diol; (B) from 2% to 35%, of acrylic acid; (C) from 15% to 65% of a monoethylenically unsaturated monomer having the rapid ultraviolet cure rate associated with acrylate monomers and having a glass transition temperature above 35 DEG C.,; (D) from 0% to 25% of a polyacrylate monomer; and (E) photoinitiator rendering the composition curable with ultraviolet light.
Inventors
- 👤 A. Frank Leo
- 👤 Clive J. Coady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/44; C08F; C08F299/00; C08F299/02; C08F299/06; C08G18/67; C08G18/671; C08G18/672; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A postformable ultraviolet curable highly adherent coating composition consisting essentially of: (A) from 15% to 30% of a linear acrylate-terminated polyurethane based on a polycarbonate diol, said polycarbonate diol having the formula: ##STR2## in which R is alkylene having from 2-20 carbon atoms; y is at least 1; and R and y are selected to provide a molecular weight for the polycarbonate diol reactant of from 300 to 3000; (B) from 10% to 20% of acrylic acid; (C) from 30% to 60% of a monoethylenically unsaturated monomer having the rapid ultraviolet cure rate associated with acrylate monomers and having a glass transition temperature above 55° C.; (D) from 8% to 25% of a triacrylate monomer; and (E) photoinitiator rendering the composition curable with ultraviolet light.
Claim 2
Dependent Claim
125 words
A postformable ultraviolet curable highly adherent coating composition consisting essentially of: (A) from 15% to 30% of a linear acrylate-terminated polyurethane based on a polycarbonate diol, said polycarbonate diol having the formula: ##STR2## in which R is alkylene having from 2-20 carbon atoms; y is at least 1; and R and y are selected to provide a molecular weight for the polycarbonate diol reactant of from 300 to 3000; (B) from 10% to 20% of acrylic acid; (C) from 30% to 60% of a monoethylenically unsaturated monomer having the rapid ultraviolet cure rate associated with acrylate monomers and having a glass transition temperature above 55° C.; (D) from 8% to 25% of a triacrylate monomer; and (E) photoinitiator rendering the composition curable with ultraviolet light.
Claim 3
Dependent Claim
29 words
A coating composition as recited in claim 1 in which R has 2-8 carbon atoms and the molecular weight of the polycarbonate diol reactant is from 600 to 1500.
Claim 4
Dependent Claim
26 words
A coating composition as recited in claim 1 in which said monoethylenically unsaturated monomer is selected from the group consisting of isobornyl acrylate and dicyclopentenyl acrylate.
Claim 5
Dependent Claim
22 words
A prime-coated galvanized steel product comprising a galvanized steel product prime coated with an ultraviolet-cured coating of the composition of claim 1.
Claim 6
Dependent Claim
22 words
A coated galvanized steel product comprising a galvanized steel product prime coated with an ultraviolet-cured coating of the composition of claim 1.
Claim 7
Dependent Claim
27 words
A coated product as recited in claim 5 in which said galvanized steel product is a tube which is formed after said coating has been cured thereon.
References Cited (Backward Citations)
US3559280A
Cited
US4210713A
Cited
US4303696A
Cited
US4205018A
Cited
EP0007265A1
Cited
US4264752A
Cited
US4514037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |