US5066705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ambient cure protective coatings for plastic substrates
Assignee: Lilly Industries Inc
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Filing: 1990-01-17
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Granted: 1991-11-19
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Expires: 2010-01-17
Abstract
Abstract A water-dispersed protective coating composition contains a coreactive binder comprising a polycarbodiimide adapted to crosslink with a carboxyl functional emulsion copolymer and polyurethane. The coating is applied to plastic substrates and ambiently cured or with mild heat.
Inventors
- 👤 Frank A. Wickert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/833; C09; C09D; C09D175/00; C09D175/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
95 words
An aqueous dispersed, thermosetting, protective coating composition for application to a plastic substrate, the coating composition containing a thermosetting polymeric binder comprising on a volume solids basis: between 50% and 80% an emulsion copolymer comprising copolymerized ethylenically unsaturated monomers including a carboxyl functional monomer, said emulsion copolymer having an Acid No. between 20 and 100, and between 20% and 50% of a water-dispersed carboxyl functional polyurethane having an Acid No. between 20 and 100; and from 2% to 10% volume solids of polycarbodiimide based on the volume solids of said emulsion copolymer and said polyurethane.
Claim 2
Dependent Claim
95 words
An aqueous dispersed, thermosetting, protective coating composition for application to a plastic substrate, the coating composition containing a thermosetting polymeric binder comprising on a volume solids basis: between 50% and 80% an emulsion copolymer comprising copolymerized ethylenically unsaturated monomers including a carboxyl functional monomer, said emulsion copolymer having an Acid No. between 20 and 100, and between 20% and 50% of a water-dispersed carboxyl functional polyurethane having an Acid No. between 20 and 100; and from 2% to 10% volume solids of polycarbodiimide based on the volume solids of said emulsion copolymer and said polyurethane.
Claim 3
Dependent Claim
115 words
An aqueous dispersed, thermosetting, protective coating composition applied to a plastic substrate, the coating composition containing a thermosetting polymeric binder comprising on a volume solids bases: between 50% and 80% an emulsion copolymer comprising copolymerized ethylenically unsaturated monomers including a carboxyl functional monomer, said emulsion copolymer having an Acid No. between 20 and 100, and between 20% and 50% of a water-dispersed carboxyl functional polyurethane having an Acid No. between 20 and 100; from 2% to 10% volume solids of polycarbodiimide based on the volume solids of said emulsion copolymer and said polyurethane; and where the coating applied to the plastic substrate is cured to crosslink the carbodiimide with the polyurethane and the emulsion copolymer.
Claim 4
Dependent Claim
115 words
An aqueous dispersed, thermosetting, protective coating composition applied to a plastic substrate, the coating composition containing a thermosetting polymeric binder comprising on a volume solids bases: between 50% and 80% an emulsion copolymer comprising copolymerized ethylenically unsaturated monomers including a carboxyl functional monomer, said emulsion copolymer having an Acid No. between 20 and 100, and between 20% and 50% of a water-dispersed carboxyl functional polyurethane having an Acid No. between 20 and 100; from 2% to 10% volume solids of polycarbodiimide based on the volume solids of said emulsion copolymer and said polyurethane; and where the coating applied to the plastic substrate is cured to crosslink the carbodiimide with the polyurethane and the emulsion copolymer.
Claim 5
Dependent Claim
20 words
The coating composition in claim 2 where the carboxyl functional polyurethane has a number average molecular weight above about 100,000.
Claim 6
Dependent Claim
39 words
The coating composition in claim 2 where the emulsion copolymer comprises copolymerized monomers on a weight basis between 3% and 60% acrylic monomer, between 1% and 15% of an acrylic acid monomer, with the balance being other ethylenic monomers.
Claim 7
Dependent Claim
18 words
The coating composition in claim 2 containing pigment to provide a pigment-volume-content (PVC) between 5 and 45 PVC.
Claim 8
Dependent Claim
19 words
The coating composition in claim 5 containing an acrylic resin pigment dispersant having an Acid No. above about 80.
Claim 9
Dependent Claim
14 words
The coating composition in claim 2 where the polycarbodiimide crosslinker is an aliphatic dicarbodiimide.
Claim 10
Dependent Claim
13 words
The coating composition in claim 1 where the polycarbodiimide is an aromatic dicarbodiimide.
Claim 11
Dependent Claim
13 words
The coating composition in claim 2 where the aromatic dicarbodiimide is dicyclohexyl carbodiimide.
Claim 12
Dependent Claim
14 words
The coating composition in claim 1 where the polycarbodiimide crosslinker is an aliphatic dicarbodiimide.
Claim 13
Dependent Claim
13 words
The coating composition in claim 1 where the polycarbodiimide is an aromatic dicarbodiimide.
Claim 14
Dependent Claim
13 words
The coating composition in claim 8 where the aromatic dicarbodiimide is dicyclohexyl carbodiimide.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |