§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4138299A Expired / Lapsed US ⏱️ 0.0 years remaining

Process utilizing a photopolymerizable and moisture curable coating containing partially capped isocyanate prepolymers and acrylate monomers

Assignee: Armstrong World Industries Inc
•
Filing: 1977-12-23
•
Granted: 1979-02-06
•
Expires: 1997-12-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A liquid radiation and moisture curable 100% reactive coating which cures to yield a clear, tough, glossy abrasion-resistant cured coating is described. The radiation and moisture curable 100% reactive coating composition comprises: 15 to 60 parts by weight acrylate diluents; and 40 to 85 parts by weight of isocyanate terminated urethane prepolymers formed by reacting a mixture of polyester diols and triols with excess aliphatic diisocyanate to form --NCO terminated prepolymer and then reacting the --NCO terminated prepolymers with sufficient hydroxy acrylate to cap between about 5% and 15% of the available --NCO sites to form addition polymerizable ethylenically unsaturated sites and a photoinitiator when light is the radiation source. When the coating is exposed to a source of radiation, the ethylenically unsaturated monomers and prepolymers polymerize to develop a tack-free surface coating, after which the partially reacted coating is further polymerized through the isocyanate terminated prepolymer portion by moisture curing to form the fully cured tough, glossy, abrasion-resistant coating. The coatings of this invention are particularly well adapted for providing a decorative thermoplastic surface covering with a clear, tough, glossy, abrasion-resistant, light-stable, no-wax wear layer.

Inventors

  • 👤 Nicholas C. Bolgiano

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 19:48
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/12; C08G18/28; C08G18/40; C08G18/42; C08G18/4202; C08G18/67; C08G18/671; C08G18/672; D06N3/04; D06N3/06; D06N3/08; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/31504; Y10T428/31652

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 125 words
In a process wherein a liquid coating is subjected to a combined radiation and moisture cure to yield a tough mar-resistant glossy film, the improvement comprising using a liquid coating consisting essentially of: a. 15 to 60 parts by weight of acrylate diluents with 10 to 90% by weight being monoethylenically unsaturated and the balance di or tri-ethylenically unsaturated, said diluents have no reactive hydroxyl groups; and b. 40 to 85 parts by weight --NCO terminated prepolymers prepared by reacting a mixture of 20 to 80% by weight polyester diol and 20 to 80% by weight polyester triol with an excess of an aliphatic diisocyanate, said prepolymer mixture being further reacted with sufficient hdyroxy acrylate to cap 5 to 15% of the available --NCO groups.
Claim 2
Dependent Claim 125 words
In a process wherein a liquid coating is subjected to a combined radiation and moisture cure to yield a tough mar-resistant glossy film, the improvement comprising using a liquid coating consisting essentially of: a. 15 to 60 parts by weight of acrylate diluents with 10 to 90% by weight being monoethylenically unsaturated and the balance di or tri-ethylenically unsaturated, said diluents have no reactive hydroxyl groups; and b. 40 to 85 parts by weight --NCO terminated prepolymers prepared by reacting a mixture of 20 to 80% by weight polyester diol and 20 to 80% by weight polyester triol with an excess of an aliphatic diisocyanate, said prepolymer mixture being further reacted with sufficient hdyroxy acrylate to cap 5 to 15% of the available --NCO groups.
Claim 3
Dependent Claim 31 words
A process in accordance with claim 1 wherein said liquid coating contains sufficient photoinitiator to initiate photopolymerization and yield a non-tacky film when said coating is subjected to a photopolymerization source.
Claim 4
Dependent Claim 55 words
A process in accordance with claim 2, in which the polyester diol has a molecular weight of 350 to 1,000 and a hydroxyl number of between about 110 and 320, and in which the polyester triol has a molecular weight of about 500 to 1,000 and a hydroxyl number of between about 160 and 330.
Claim 5
Dependent Claim 21 words
A process in accordance with claim 3 in which the acrylate diluents are a mixture of 2-ethylhexyl acrylate and 1,6-hexane dioldiacrylate.
Claim 6
Dependent Claim 39 words
A process in accordance with claim 3 in which the hydroxy acrylate reacted with said --NCO terminated prepolymers is 2-- hydroxyethyl acrylate, said hydroxy acrylate being sufficient in amount to react with about 10% of the available --NCO groups.
Claim 7
Dependent Claim 15 words
A process in accordance with claim 3 in which the diisocyanate is 4,4'-diisocyanato dicyclohexyl methane.
Claim 8
Dependent Claim 29 words
A process in accordance with claim 4 in which the weight ratio of acrylate diluents to prepolymer mixture is about 35 parts by weight to 65 parts by weight.
Claim 9
Dependent Claim 68 words
A process in accordance with claim 7 in which the triol is the reaction product of 1 mole glycerol, 3 moles of a 7/3 mixture of adipic and isophthalic acids, and 3 moles 1,6-hexane diol, the diol is a polycaprolactone diol having a molecular weight of between 350 and 1,000 and a hydroxyl number of between 110 and 320 , and wherein the diiscoyanate is 4,4'-diisocyanato dicyclohexyl methane.

References Cited (Backward Citations)

US4025407A Cited
US3935330A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-02-05 1982-08-07 1983-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-02-05 1986-08-07 1987-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-02-05 1990-08-07 1991-02-06 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag