Patent BE557424A 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 00:15
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.
References Cited (Backward Citations)
US3549406A
Cited
US3531314A
Cited
US4160065A
Cited
US4731289A
Cited
US4447571A
Cited
US4335029A
Cited
US4767671A
Cited
US4745301A
Cited
EP0230364A2
Cited
US4769100A
Cited
EP0266109A2
Cited
US4752532A
Cited
EP0285071A2
Cited
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 |