Patent US4129547A successfully refreshed from Google Patents.
US4129547A
Expired / Lapsed
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High solids coating compositions for flexible substrates containing urea-formaldehyde
Assignee: EIDP Inc
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Filing: 1977-06-30
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Granted: 1978-12-12
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Expires: 1997-06-30
Abstract
Abstract A low viscosity high solids thermosetting coating composition useful in the packaging industry as a barrier coating and overprint varnish, based urea-formaldehyde crosslinking agents and low molecular weight polyols, is provided. These compositions provide rapid cure response and afford coatings having good gloss, clarity, and mar resistance and are non-blocking. The compositions do not contain aromatic solvents and are applicable by gravure or flexographic techniques.
Inventors
- 👤 Paul R. Noyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:03
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/20; C09D161/32; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C09D11/103; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31942; Y10T428/31949; Y10T428/31957; Y10T428/31964
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A high solids thermosetting coating composition consisting essentially of: (A) 50-85 parts by weight, based on the weight of (A) plus (B), of a methylated urea-formaldehyde crosslinking agent; and (B) 50-15 parts by weight, based on the weight of (A) plus (B) of a liquid polyol having a molecular weight range of 425-1,100, selected from the group consisting of aliphatic diols and triols, ether diols and triols, and polyester diols; wherein components (A) and (B) are compatible and wherein the mixture of (A) and (B) has a maximum Brookfield viscosity of 2,000 centipoises at 25° C.; said composition having a minimum solids content of 80% by weight.
Claim 2
Dependent Claim
107 words
A high solids thermosetting coating composition consisting essentially of: (A) 50-85 parts by weight, based on the weight of (A) plus (B), of a methylated urea-formaldehyde crosslinking agent; and (B) 50-15 parts by weight, based on the weight of (A) plus (B) of a liquid polyol having a molecular weight range of 425-1,100, selected from the group consisting of aliphatic diols and triols, ether diols and triols, and polyester diols; wherein components (A) and (B) are compatible and wherein the mixture of (A) and (B) has a maximum Brookfield viscosity of 2,000 centipoises at 25° C.; said composition having a minimum solids content of 80% by weight.
Claim 3
Dependent Claim
79 words
The coating composition of claim 1, wherein said polyol is selected from the group consisting of polyethylene glycol, polypropylene glycol, block polymer of ethylene oxide and propylene oxide, ethylene oxide-propylene oxide polyether of glycerine, triester of trimethylol propane with epsilon-caprolactone, and a polyester of the following structure: ##STR2## its isomer through the secondary hydroxyl group or mixtures thereof, wherein n = 0-10 and at least 65% by weight is n = 3 or less and wherein m = 2-12.
Claim 4
Dependent Claim
107 words
A high solids thermosetting coating composition consisting essentially of: (A) 70 parts by weight, based on the weight of (A) plus (B), of a methylated urea-formaldehyde crosslinking agent; and (B) 30 parts by weight, based on the weight of (A) plus (B) of a liquid polyol having a molecular weight range of 425-1,100, selected from the group consisting of aliphatic diols and triols, ether diols and triols, and polyester diols; wherein components (A) and (B) are compatible and wherein the mixture of (A) and (B) has a maximum Brookfield viscosity of 2,000 centipoises at 25° C.; said composition having a minimum solids content of 80% by weight.
Claim 5
Dependent Claim
107 words
A high solids thermosetting coating composition consisting essentially of: (A) 70 parts by weight, based on the weight of (A) plus (B), of a methylated urea-formaldehyde crosslinking agent; and (B) 30 parts by weight, based on the weight of (A) plus (B) of a liquid polyol having a molecular weight range of 425-1,100, selected from the group consisting of aliphatic diols and triols, ether diols and triols, and polyester diols; wherein components (A) and (B) are compatible and wherein the mixture of (A) and (B) has a maximum Brookfield viscosity of 2,000 centipoises at 25° C.; said composition having a minimum solids content of 80% by weight.
Claim 6
Dependent Claim
79 words
The coating composition of claim 3, wherein said polyol is selected from the group consisting of polyethylene glycol, polypropylene glycol, block polymer of ethylene oxide and propylene oxide, ethylene oxide-propylene oxide polyether of glycerine, triester of trimethylol propane with epsilon-caprolactone, and a polyester of the following structure: ##STR3## its isomer through the secondary hydroxyl group or mixtures thereof, where n = 0-10 and at least 65% by weight is n = 3 or less and wherein m = 2-12.
Claim 7
Dependent Claim
78 words
A high solids thermosetting coating composition consisting essentially of: (A) 70 parts by weight, based on the weight of (A) plus (B), of a methylated urea-formaldehyde crosslinking agent; and (B) 30 parts by weight, based on the weight of (A) plus (B), of a polypropylene glycol having a moclecular weight of 425; wherein the mixture of (A) and (B) has a maximum Brookfield viscosity of 1,500 centipoises; said composition having a minimum solids content of 80% by weight.
Claim 8
Dependent Claim
78 words
A high solids thermosetting coating composition consisting essentially of: (A) 70 parts by weight, based on the weight of (A) plus (B), of a methylated urea-formaldehyde crosslinking agent; and (B) 30 parts by weight, based on the weight of (A) plus (B), of a polypropylene glycol having a moclecular weight of 425; wherein the mixture of (A) and (B) has a maximum Brookfield viscosity of 1,500 centipoises; said composition having a minimum solids content of 80% by weight.
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) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |