Patent US4107235A successfully refreshed from Google Patents.
US4107235A
Expired / Lapsed
US
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High impact resistant acrylic coating compositions and coated articles
Assignee: Rohm and Haas Co
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Filing: 1977-10-20
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Granted: 1978-08-15
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Expires: 1997-10-20
Abstract
Abstract Coating compositions comprising an acrylic solution polymer having a molecular weight of about 30,000 to 250,000 and a Tg above 65° F., a solvent therefor, and a compatible acrylic polymer having a Tg less than -20° F., which is soluble in the same solvent, coated substrates, and especially coated impact-modified acrylic sheets having improved resistance to impact.
Inventors
- 👤 Walter Groesbeck DeWitt, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/08; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2433/00; C08L; C08L2205/00; C08L2205/02; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L51/00; C08L51/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A composition for coating a substrate comprising an acrylic solution polymer polymerized from a monomer system comprising one or more lower alkyl methacrylates and acrylates and having a molecular weight of about 30,000 to 250,000 and a Tg above 65° F., a solvent therefor, and a compatible acrylic polymer having a Tg less than -20° F. comprising a poly(butyl acrylate), wherein the weight ratio of said acrylic solution polymer to said compatible acrylic polymer is about 10:1 to 1:10.
Claim 2
Dependent Claim
79 words
A composition for coating a substrate comprising an acrylic solution polymer polymerized from a monomer system comprising one or more lower alkyl methacrylates and acrylates and having a molecular weight of about 30,000 to 250,000 and a Tg above 65° F., a solvent therefor, and a compatible acrylic polymer having a Tg less than -20° F. comprising a poly(butyl acrylate), wherein the weight ratio of said acrylic solution polymer to said compatible acrylic polymer is about 10:1 to 1:10.
Claim 3
Dependent Claim
34 words
The composition of claim 1 wherein said compatible acrylic polymer comprises a poly(butyl acrylate) further including units derived from one or more monomers selected from the group consisting of alkoxyalkyl acrylates and alkylthioalkyl acrylates.
Claim 4
Dependent Claim
52 words
The composition of claim 1 wherein said compatible acrylic polymer comprises a poly(butyl acrylate) comprising a two-stage polymer having a first stage polymerized from a monomer system of butyl acrylate, methoxyethyl acrylate, cyanoethyl acrylate, and vinyl chloroacetate, and a second stage polymerized from a monomer system of ethyl acrylate and vinyl chloroacetate.
Claim 5
Dependent Claim
53 words
The composition of claim 1 wherein said compatible acrylic polymer comprises a poly(butyl acrylate) comprising a two-stage polymer having a first stage polymerized from a monomer system of butyl acrylate, 1,3-butylene glycol diacrylate and allyl methacrylate, and a second stage polymerized from a monomer system of ethyl methacrylate, methyl acrylate and methacrylic acid.
References Cited (Backward Citations)
US3475516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |