Patent US898667A successfully refreshed from Google Patents.
Patent US4933237A successfully refreshed from Google Patents.
US4933237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint coated sheet material with adhesion promoting composition
Assignee: Avery Dennison Corp
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Filing: 1989-02-17
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Granted: 1990-06-12
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Expires: 2009-02-17
Abstract
Abstract A protective and decorative, stretchable, thermoplastic sheet material for bonding by thermoforming to automobile body panels and other articles which comprises a polyester carrier film coated with an aqueous polyurethane paint composition. To aid in the adhesion of the paint, the carrier film is coated with a tie coat composition comprising a self-crosslinking, aqueous polyurethane dispersion.
Inventors
- 👤 Mary A. Krenceski
- 👤 John M. Pochan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:25
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/56; B05D7/57; B05D1/00; B05D1/28; B05D1/286; B05D7/02; B05D7/04; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0823; C08G18/10; C08G18/12; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3842; C08G18/3851; C08G18/83; C08G18/833; C08G18/84; C08J; C08J3/00; C08J3/02; C08J3/03; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J2375/00; C08J2375/04; C08J2467/00; C08J2467/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31565; Y10T428/31786
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
154 words
A stretchable, thermoformable protective and decorative sheet material for use in a thermoforming process in which it is stretched and bonded to a three dimensional substrate which comprises a flexible and stretchable, thermoformable polyester carrier film a polyurethane paint layer formed from a water-based polyurethane paint composition, a crosslinked polyurethane transparent topcoat, and disposed between the carrier film and the paint layer, a thin tie layer formed by coating on the carrier film a self-crosslinking aqueous polyurethane anionic colloidal dispersion, the polyurethane being derived from a polyurethane prepolymer of which the chain is extended with an aliphatic polyamine chain extender and is end capped with N-methylol hydrazide groups, the prepolymer being derived from (a) an aliphatic diisocyanate and (b) an aliphatic polyester polyol and having pendant water-dispersing carboxylic salt groups in the polymer chain; said sheet material having a peel strength greater than 3000 g/in after conditioning at 38° C. and 100 percent RH.
Claim 2
Dependent Claim
154 words
A stretchable, thermoformable protective and decorative sheet material for use in a thermoforming process in which it is stretched and bonded to a three dimensional substrate which comprises a flexible and stretchable, thermoformable polyester carrier film a polyurethane paint layer formed from a water-based polyurethane paint composition, a crosslinked polyurethane transparent topcoat, and disposed between the carrier film and the paint layer, a thin tie layer formed by coating on the carrier film a self-crosslinking aqueous polyurethane anionic colloidal dispersion, the polyurethane being derived from a polyurethane prepolymer of which the chain is extended with an aliphatic polyamine chain extender and is end capped with N-methylol hydrazide groups, the prepolymer being derived from (a) an aliphatic diisocyanate and (b) an aliphatic polyester polyol and having pendant water-dispersing carboxylic salt groups in the polymer chain; said sheet material having a peel strength greater than 3000 g/in after conditioning at 38° C. and 100 percent RH.
Claim 3
Dependent Claim
26 words
A sheet material according to claim 1 wherein the carrier film is formed from an immiscible blend of a linear polyester and a more flexible copolymer.
Claim 4
Dependent Claim
33 words
The sheet material of claim 2 wherein the linear polyester is a copolymer of terephthalic acid, 1,4-cyclohexanedimethanol and a lower alkylene glycol and the more flexible copolymer is a rubber-modified styrene-maleic anhydride copolymer.
Claim 5
Dependent Claim
21 words
The sheet material of claim 1 wherein the aqueous polyurethane dispersion from which the tie layer is formed contains a surfactant.
Claim 6
Dependent Claim
14 words
The sheet material of claim 4 wherein the surfactant is a non-ionic fluorinated surfactant.
Claim 7
Dependent Claim
29 words
The sheet material of claim 5 wherein the surfactant is of the formula: ##STR3## wherein R=H or lower alkyl, m=1 to 4, n=5 to 9 and p=2 to 30.
Claim 8
Dependent Claim
31 words
A sheet material according to claim 1 wherein the aliphatic polyester polyol is a derivative of neopentyl glycol, hexanediol and adipic acid and wherein the prepolymer contains units derived from melamine.
Claim 9
Dependent Claim
42 words
A sheet material according to claim 7 wherein the aqueous polyurethane dispersion from which the tie layer is formed contains a non-ionic fluorinated surfactant and wherein the thickness of the tie layer after it is dried is less than about 0.0025 mm.
Claim 10
Dependent Claim
24 words
A sheet material according to claim 8 wherein the thickness of the tie layer after it is dried is less than about 0.001 mm.
Claim 11
Dependent Claim
17 words
A sheet material according to claim 1 wherein the carrier film is a corona discharge treated film.
Claim 12
Dependent Claim
139 words
An article comprising a three dimensional substrate having bonded thereto a stretchable, thermoformable protective and decorative sheet material comprising a stretchable thermoformable polyester carrier film, a polyurethane paint layer formed from a water-based polyurethane paint composition, a crosslinked polyurethane paint composition, a crosslinked polyurethane transparent topcoat, and a thin tie layer formed by coating on the carrier film a self-crosslinking aqueous polyurethane anionic colloidal dispersion, the polyurethane being derived from a polyurethane prepolymer of which the chain is extended with an aliphatic polyamine chain extender and is end capped with N-methylol hydrazide groups, the prepolymer being derived from (a) an aliphatic diisocyanate and (b) an aliphatic polyester polyol and having pendant water-dispersing carboxylic salt groups in the polymer chain; said sheet material having a peel strength greater than 3000 g/in after conditioning at 38° C. and 100 percent RH.
Claim 13
Dependent Claim
139 words
An article comprising a three dimensional substrate having bonded thereto a stretchable, thermoformable protective and decorative sheet material comprising a stretchable thermoformable polyester carrier film, a polyurethane paint layer formed from a water-based polyurethane paint composition, a crosslinked polyurethane paint composition, a crosslinked polyurethane transparent topcoat, and a thin tie layer formed by coating on the carrier film a self-crosslinking aqueous polyurethane anionic colloidal dispersion, the polyurethane being derived from a polyurethane prepolymer of which the chain is extended with an aliphatic polyamine chain extender and is end capped with N-methylol hydrazide groups, the prepolymer being derived from (a) an aliphatic diisocyanate and (b) an aliphatic polyester polyol and having pendant water-dispersing carboxylic salt groups in the polymer chain; said sheet material having a peel strength greater than 3000 g/in after conditioning at 38° C. and 100 percent RH.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |