Patent US4816288A successfully refreshed from Google Patents.
US4816288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer for adherence to plastic substrates
Assignee: PPG Industries Ohio Inc
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Filing: 1987-12-04
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Granted: 1989-03-28
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Expires: 2007-12-04
Abstract
Abstract A silicate/titanate copolymer is disclosed for use as a primer in adhering rigid polymer substrates to elastomeric interlayers or inorganic coatings.
Inventors
- 👤 Thomas G. Rukavina
- 👤 Chia-Cheng Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:36
CPC Classifications
C; C09; C09D; C09D185/00; C08; C08G; C08G79/00; C08J; C08J5/00; C08J5/12; C08J5/124; C09D4/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
33 words
A composition of matter useful in adhering coatings to polymeric substrates which comprises a silicate/titanate copolymer, wherein said capolymer consists of effective amounts of silicate and titanate to adhere coatings to polymeric substrates.
Claim 2
Dependent Claim
33 words
A composition of matter useful in adhering coatings to polymeric substrates which comprises a silicate/titanate copolymer, wherein said capolymer consists of effective amounts of silicate and titanate to adhere coatings to polymeric substrates.
Claim 3
Dependent Claim
22 words
A composition according to claim 1, wherein the silicate/titanate copolymer is a reaction product of an organosilicate and an organic titanium compound.
Claim 4
Dependent Claim
19 words
A composition according to claim 2, wherein said organosilicate is selected from the group consisting of tetraethylorthosilicate and tetramethylorthosilicate.
Claim 5
Dependent Claim
25 words
A composition according to claim 2, wherein said organic titanium compound is selected from the group consisting of titanium (IV) butoxide and titanium (IV) isopropoxide.
Claim 6
Dependent Claim
19 words
A composition according to claim 2, wherein said silicate and said titanium compound are reacted in substantially equimolar ratio.
Claim 7
Independent Claim
77 words
A method of making a primer for use in adhering coatings to polymeric substrates comprising the steps of: a. mixing effective amounts of an organosilicate compound and an organic titanium compound capable of reacting with said organosilicate together in a solvent to form a solution; b. applying said solution to a substrate surface; and c. evaporating the solvent to form on the substrate surface a film comprising a silicate/titanate reaction product of said organosilicate and titanium compound.
Claim 8
Independent Claim
77 words
A method of making a primer for use in adhering coatings to polymeric substrates comprising the steps of: a. mixing effective amounts of an organosilicate compound and an organic titanium compound capable of reacting with said organosilicate together in a solvent to form a solution; b. applying said solution to a substrate surface; and c. evaporating the solvent to form on the substrate surface a film comprising a silicate/titanate reaction product of said organosilicate and titanium compound.
Claim 9
Dependent Claim
19 words
A method according to claim 6, wherein said organosilicate is selected from the group consisting of tetraethylorthosilicate and tetramethylorthosilicate.
Claim 10
Dependent Claim
25 words
A method according to claim 7, wherein said organic titanium compound is selected from the group consisting of titanium (IV) butoxide and titanium (IV) isopropoxide.
Claim 11
Dependent Claim
20 words
A method according to claim 7, wherein said organosilicate and said organic titanium compound are mixed in substantially equimolar amounts.
Claim 12
Dependent Claim
11 words
A method according to claim 7, wherein the solvent is isopropanol.
Claim 13
Dependent Claim
58 words
In a method of adhering a coating to a polymeric surface, the improvement which comprises the steps of: a. contacting one of the surfaces to be adhered with a solution comprising effective amounts of an organosilicate and an organic titanium compound; and b. evaporating solvent from said solution thereby forming a film of silicate/titanate copolymer on said surface.
Claim 14
Dependent Claim
58 words
In a method of adhering a coating to a polymeric surface, the improvement which comprises the steps of: a. contacting one of the surfaces to be adhered with a solution comprising effective amounts of an organosilicate and an organic titanium compound; and b. evaporating solvent from said solution thereby forming a film of silicate/titanate copolymer on said surface.
Claim 15
Dependent Claim
21 words
An improved method according to claim 11, wherein said organosilicate compound is selected from the group consisting of tetraethylorthosilicate and tetramethylorthosilicate.
Claim 16
Dependent Claim
26 words
An improved method according to claim 11, wherein said organic vanadium compound is selected from the group consisting of titanium (IV) butoxide and titanium (IV) isopropoxide.
Claim 17
Dependent Claim
21 words
An improved method according to claim 11, wherein said organosilicate and said organic titanium compound are present in substantially equimolar amounts.
Claim 18
Dependent Claim
12 words
An improved method according to claim 11, wherein said solvent is isopropanol.
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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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |