US4486565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer compositions for improving adhesion of abrasion resistant silicone coatings to plastic surfaces
Assignee: Dow Silicones Corp
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Filing: 1983-02-18
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Granted: 1984-12-04
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Expires: 2003-02-18
Abstract
Abstract Primer compositions are disclosed for improving the adhesion of abrasion resistant polysiloxane coatings to plastic substrates. The primers contain a thermosettable acrylic resin, an aminofunctional organosilicon compound, and optionally an ultraviolet light screening compound. A process employing the primer compositions to provide more durable adhesion of transparent, abrasion resistant polysiloxane coatings on plastic substrates is also disclosed.
Inventors
- 👤 Kelly L. Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:48
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J2333/00; C08J2333/04; C08J2333/06; C08J2333/08; C08J2483/00; C08J2483/04; C08L; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
120 words
A composition containing from 99 to 70 weight percent of organic solvent and 1 to 30 weight percent of coating components consisting essentially of (I) a thermosettable acrylic resin and (II) from 0.1 to 50 weight percent based on (I) of an aminofunctional organo silicon compound of the general formula (RO).sub.x O.sub.(3-x)/2 SiR'NHR" wherein R is hydrogen or a monovalent hydrocarbon radical of 1 to 12 carbon atoms, R' is a divalent alkylene radical of 3 or 4 carbon atoms, R" is a monovalent radical selected from the group consisting essentially of hydrogen, alkyl radicals of 1 to 4 carbon atoms and the --CH 2 CH 2 NH 2 radical, and x has an average value from 0 to 3.
Claim 2
Dependent Claim
120 words
A composition containing from 99 to 70 weight percent of organic solvent and 1 to 30 weight percent of coating components consisting essentially of (I) a thermosettable acrylic resin and (II) from 0.1 to 50 weight percent based on (I) of an aminofunctional organo silicon compound of the general formula (RO).sub.x O.sub.(3-x)/2 SiR'NHR" wherein R is hydrogen or a monovalent hydrocarbon radical of 1 to 12 carbon atoms, R' is a divalent alkylene radical of 3 or 4 carbon atoms, R" is a monovalent radical selected from the group consisting essentially of hydrogen, alkyl radicals of 1 to 4 carbon atoms and the --CH 2 CH 2 NH 2 radical, and x has an average value from 0 to 3.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein x is 3 and R is an alkyl radical of 1 to 4 carbon atoms.
Claim 4
Dependent Claim
22 words
The composition of claim 2 wherein R is methyl, R' is trimethylene and R" is --CH 2 CH 2 NH 2 .
Claim 5
Dependent Claim
16 words
The composition of claim 2 wherein R is ethyl, R' is trimethylene and R" is hydrogen.
Claim 6
Dependent Claim
28 words
The composition of claim 1 wherein x has an average value of 1.5 to 2.0, R' is trimethylene and R" is --CH 2 CH 2 NH 2 .
Claim 7
Dependent Claim
29 words
The composition of claim 5 wherein 30 to 50% of the R radicals are alkyl radicals of 8 to 12 carbon atoms and the remaining R radicals are methyl.
Claim 8
Dependent Claim
22 words
The composition of claim 1 wherein R is hydrogen, R' is trimethylene and R" is --CH 2 CH 2 NH 2 .
Claim 9
Dependent Claim
16 words
The composition of claim 1 wherein R is hydrogen, R' is trimethylene and R" is hydrogen.
Claim 10
Dependent Claim
135 words
A composition containing from 99 to 70 weight percent of organic solvent and 1 to 30 weight percent of coating components consisting essentially of (I) a thermosettable acrylic resin; (II) from 0.1 to 50 weight percent based on (I) of an aminofunctional organo silicon compound of the general formula (RO).sub.x O.sub.3-x/2 SiR'NHR" wherein R is hydrogen or a monovalent hydrocarbon radical of 1 to 12 carbon atoms, R' is a divalent alkylene radical of 3 or 4 carbon atoms, R" is a monovalent radical selected from the group consisting essentially of hydrogen, alkyl radicals of to 4 carbon atoms and the --CH 2 CH 2 NH 2 radical, and x has an average value from 0 to 3; and (III) from 0.1 to 100 weight percent based on (I) of an ultraviolet light screening compound.
Claim 11
Dependent Claim
135 words
A composition containing from 99 to 70 weight percent of organic solvent and 1 to 30 weight percent of coating components consisting essentially of (I) a thermosettable acrylic resin; (II) from 0.1 to 50 weight percent based on (I) of an aminofunctional organo silicon compound of the general formula (RO).sub.x O.sub.3-x/2 SiR'NHR" wherein R is hydrogen or a monovalent hydrocarbon radical of 1 to 12 carbon atoms, R' is a divalent alkylene radical of 3 or 4 carbon atoms, R" is a monovalent radical selected from the group consisting essentially of hydrogen, alkyl radicals of to 4 carbon atoms and the --CH 2 CH 2 NH 2 radical, and x has an average value from 0 to 3; and (III) from 0.1 to 100 weight percent based on (I) of an ultraviolet light screening compound.
Claim 12
Dependent Claim
21 words
The composition of claim 9 wherein x is 3 and R is an alkyl radical of 1 to 4 carbon atoms.
Claim 13
Dependent Claim
22 words
The compositions of claim 10 wherein R is methyl, R' is trimethylene and R" is --CH 2 CH 2 NH 2 .
Claim 14
Dependent Claim
16 words
The compositions of claim 10 wherein R is ethyl, R' is trimethylene and R" is hydrogen.
Claim 15
Dependent Claim
28 words
The composition of claim 9 wherein x has an average value of 1.5 to 2.0, R' is trimethylene and R" is --CH 2 CH 2 NH 2 .
Claim 16
Dependent Claim
29 words
The composition of claim 13 wherein 30 to 50% of the R radicals are alkyl radicals of 8 to 12 carbon atoms and the remaining R radicals are methyl.
Claim 17
Dependent Claim
22 words
The composition of claim 9 wherein R is hydrogen, R' is trimethylene and R" is --CH 2 CH 2 NH 2 .
Claim 18
Dependent Claim
16 words
The composition of claim 9 wherein R is hydrogen, R' is trimethylene and R" is hydrogen.
References Cited (Backward Citations)
US4127697A
Cited
US4311737A
Cited
US4188451A
Cited
US4207357A
Cited
US4277287A
Cited
JPS5592742A
Cited
US4242381A
Cited
US4367262A
Cited
GB2066101A
Cited
US4284685A
Cited
US4390660A
Cited
US4401500A
Cited
US4414349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |