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US4844952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayered finish having good stain resistance
Assignee: PPG Industries Ohio Inc
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Filing: 1987-12-30
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Granted: 1989-07-04
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Expires: 2007-12-30
Abstract
Abstract A method of forming a multilayered finish on a substrate involves: I. applying a decorative finish to a substrate: II. applying a clear, aqueous based coating composition over the decorative finish of step I, said clear coating composition containing: (a) a waterborne polymer having calculated a glass transition temperature of at least about 40° C. and having a one component working parameter of solubility, δ wp, in the range of about 9.0 to about 9.6 (cal./cm 3 ) 1/2 , with ##EQU1## wherein Fi=the molar attraction constant of an individual functional group of the polymer expressed in cal. 1/2 cm 3/2 /mole, and Vi=the molar volume constant of an individual group of the polymer expressed in cubic cubic centimeters per mole; and (b) an amount of coalescing component sufficient to form a coalesced film, said clearcoating composition being essentially free of external crosslinking agents; and III. allowing the coating composition to coalesce.
Inventors
- 👤 Stephen M. Korenkiewicz
- 👤 Kurt G. Olson
- 👤 William G. Boberski
- 👤 Suryya K. Das
- 👤 S. Thomas Greer
- 👤 Raymond E. Zaleski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:50
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; B; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D7/53; B05D2451/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
151 words
A method of forming a multilayered finish on a substrate, comprising: I. applying a decorative finish to a substrate: II. applying a clear, aqueous based coating composition over the decorative finish of step I, said clear coating composition comprising: (a) a waterborne polymer having a calculated glass transition temperature of at least about 40° C. and having a one component working parameter of solubility, δ wp, in the range of about 9.0 to about 9.6 (cal./cm 3 ) 1/2 , with ##EQU5## wherein Fi=the molar attraction constant of an individual functional group of the polymer expressed in cal. 1/2 cm 3/2 /mole, and Vi=the molar volume constant of an individual group of the polymer expressed in cubic centimeters per mole; and (b) an amount of coalescing component sufficient to form a coalesced film, said clearcoating composition being essentially free of external crosslinking agents; and III. allowing the coating composition to coalesce.
Claim 2
Independent Claim
151 words
A method of forming a multilayered finish on a substrate, comprising: I. applying a decorative finish to a substrate: II. applying a clear, aqueous based coating composition over the decorative finish of step I, said clear coating composition comprising: (a) a waterborne polymer having a calculated glass transition temperature of at least about 40° C. and having a one component working parameter of solubility, δ wp, in the range of about 9.0 to about 9.6 (cal./cm 3 ) 1/2 , with ##EQU5## wherein Fi=the molar attraction constant of an individual functional group of the polymer expressed in cal. 1/2 cm 3/2 /mole, and Vi=the molar volume constant of an individual group of the polymer expressed in cubic centimeters per mole; and (b) an amount of coalescing component sufficient to form a coalesced film, said clearcoating composition being essentially free of external crosslinking agents; and III. allowing the coating composition to coalesce.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the waterborne polymer is an acrylic emulsion polymer containing one or more functional groups.
Claim 4
Dependent Claim
55 words
The method of claim 2 wherein the acrylic emulsion polymer is prepared from a vinyl monomer component which comprises at least 5 percent by weight of a vinyl monomer selected from epoxy functional vinyl monomer, hydroxyl functional vinyl monomer and mixtures thereof; and up to 2.0 percent by weight of an acid functional vinyl monomer.
Claim 5
Dependent Claim
13 words
The method of claim 3 wherein the epoxy functional monomer is glycidyl methacrylate.
Claim 6
Dependent Claim
13 words
The method of claim 3 wherein the epoxy functional monomer is glycidyl acrylate.
Claim 7
Dependent Claim
25 words
The method of claim 3 wherein the acrylic emulsion polymer is derived from at least 10 percent by weight of a hydroxyl functional vinyl monomer.
Claim 8
Dependent Claim
30 words
The method of claim 6 wherein the hydroxyl functional vinyl monomer is selected from 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate and vinyl acetate polymers or copolymers which are subsequently hydrolyzed.
Claim 9
Dependent Claim
25 words
The method of claim 3 wherein the acrylic emulsion polymer is derived from up to 1.0 percent by weight of an acid functional vinyl monomer.
Claim 10
Dependent Claim
14 words
The method of claim 8 wherein the acid functional vinyl monomer is acrylic acid.
Claim 11
Dependent Claim
14 words
The method of claim 8 wherein the acid functional vinyl monomer is methacrylic acid.
Claim 12
Dependent Claim
17 words
The method of claim 1 wherein the calculated glass transition temperature is at least about 55° C.
Claim 13
Dependent Claim
18 words
The method of claim 1 wherein the working parameter of solubility ranges from about 9.25 to about 9.6.
Claim 14
Dependent Claim
21 words
The method of claim 1 wherein the coalescing component is a blend of solvents which comprises benzyl alcohol and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate.
Claim 15
Dependent Claim
38 words
The method of claim 13 wherein the coalescing component is present in the coating composition in an amount ranging from about 5 to about 25 percent by weight, the percentages based on the total weight of the composition.
Claim 16
Dependent Claim
17 words
The method of claim 1 wherein the decorative finish of step I is a pigmented basecoating composition.
Claim 17
Dependent Claim
16 words
The method of claim 1 wherein the decorative finish of step I is a wallpaper finish.
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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |