US4422891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitrifiable adhesive process
Assignee: Dentsply Research and Development Corp
•
Filing: 1981-06-16
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Granted: 1983-12-27
•
Expires: 2001-06-16
Abstract
Abstract Processes are provided for the adhering together of articles employing vitrifiable adhesives. According to a preferred embodiment, two or more articles are contacted with a polymerizable adhesive comprising a particulate, inorganic filler and a polymerizable resin comprising at least 0.25% by weight of the adhesive of a polymerizable silane. The adhesive is then polymerized and the polymerized adhesive heated to afford a vitrified bond.
Inventors
- 👤 Donald I. Gonser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:32
CPC Classifications
C; C09; C09J; C09J5/00; C09J4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
91 words
A method of adhering a first article to a second article comprising: contacting each of said articles with a polymerizable adhesive comprising: at least about 25% by weight of said adhesive of an inorganic particulate filler, and a polymerizable resin comprising at least about 0.25% by weight of said adhesive of a polymerizable silane, polymerizing said adhesive to adhere said objects together, and heating said polymerizable adhesive at a temperature and for a time sufficient to drive off or vaporize volatile organic components of the polymerized adhesive to effect vitrification thereof.
Claim 2
Independent Claim
91 words
A method of adhering a first article to a second article comprising: contacting each of said articles with a polymerizable adhesive comprising: at least about 25% by weight of said adhesive of an inorganic particulate filler, and a polymerizable resin comprising at least about 0.25% by weight of said adhesive of a polymerizable silane, polymerizing said adhesive to adhere said objects together, and heating said polymerizable adhesive at a temperature and for a time sufficient to drive off or vaporize volatile organic components of the polymerized adhesive to effect vitrification thereof.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said heating is accomplished employing microwave radiation.
Claim 4
Dependent Claim
34 words
The method of claim 1 wherein said filler is present in major proportion of said adhesive and said silane is present in an amount of at least about 1% by weight of said adhesive.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein at least one of said articles has been treated with a silanating agent prior to said contacting step.
Claim 6
Dependent Claim
15 words
The method of claim 1 wherein said adhesive further comprises a visible light sensitizing system.
Claim 7
Dependent Claim
33 words
The method of claim 5 wherein said visible light sensitizing system comprises an alpha diketone and an amine in amounts sufficient to cause polymerization of said adhesive upon its exposure to visible light.
Claim 8
Dependent Claim
15 words
The method of claim 1 wherein said adhesive further comprises an ultraviolet light sensitizing system.
Claim 9
Dependent Claim
32 words
The method of claim 7 wherein said ultraviolet light sensitizing system comprises a benzoin alkyl ether in an amount sufficient to cause polymerization of said adhesive upon its exposure to ultraviolet light.
Claim 10
Dependent Claim
21 words
The method of claim 1 wherein said adhesive further comprises a visible light sensitizing system and an ultraviolet light sensitizing system.
Claim 11
Dependent Claim
16 words
The method of claim 5, 7, or 9 wherein said adhesive further comprises a polymerization promoter.
Claim 12
Dependent Claim
11 words
The method of claim 1 wherein said polymerization is attained photochemically.
Claim 13
Dependent Claim
13 words
The method of claim 1 wherein said polymerization is attained employing visible light.
Claim 14
Dependent Claim
18 words
The method of claim 1 wherein said heating is accomplished at temperatures of at least about 300° C.
Claim 15
Dependent Claim
11 words
The method of claim 1 wherein said polymerization is accomplished thermally.
Claim 16
Dependent Claim
16 words
The method of claim 14 wherein said polymerization and said heating to effect vitrification occur simultaneously.
Claim 17
Independent Claim
104 words
A method of adhering a first article to a second article comprising: contacting each of said articles with a polymerizable adhesive comprising: at least about 25% by weight of said adhesive of an inorganic particulate filler, and a polymerizable resin comprising at least about 0.25% by weight of said adhesive of a polymerizable silane, positioning said objects relative to each other to attain a preselected spatial orientation, polymerizing said adhesive to adhere said objects together, and heating said polymerized adhesive at a temperature and for a time sufficient to drive off or vaporize volatile organic components of the polymerizable adhesive to effect vitrification thereof.
Claim 18
Independent Claim
104 words
A method of adhering a first article to a second article comprising: contacting each of said articles with a polymerizable adhesive comprising: at least about 25% by weight of said adhesive of an inorganic particulate filler, and a polymerizable resin comprising at least about 0.25% by weight of said adhesive of a polymerizable silane, positioning said objects relative to each other to attain a preselected spatial orientation, polymerizing said adhesive to adhere said objects together, and heating said polymerized adhesive at a temperature and for a time sufficient to drive off or vaporize volatile organic components of the polymerizable adhesive to effect vitrification thereof.
Claim 19
Dependent Claim
13 words
The method of claim 16, wherein said heating is accomplished employing microwave radiation.
Claim 20
Dependent Claim
28 words
The method of claim 16 wherein said articles are contacted with an additional quantity of said adhesive subsequent to said polymerizing step but prior to said heating step.
Claim 21
Dependent Claim
36 words
The method of claim 16 wherein said filler is present in major proportion by weight of said adhesive and said silane is present in an amount of at least about 1% by weight of said adhesive.
Claim 22
Dependent Claim
24 words
The method of claim 16 wherein at least one of said articles has been treated with a silanating agent prior to said contacting step.
Claim 23
Dependent Claim
15 words
The method of claim 16 wherein said adhesive further comprises a visible light sensitizing system.
Claim 24
Dependent Claim
33 words
The method of claim 21 wherein said visible light sensitizing system comprises an alpha diketone and an amine in amounts sufficient to cause polymerization of said adhesive upon its exposure to visible light.
Claim 25
Dependent Claim
15 words
The method of claim 16 wherein said adhesive further comprises an ultraviolet light sensitizing system.
Claim 26
Dependent Claim
32 words
The method of claim 23 wherein said ultraviolet light sensitizing system comprises a benzoin alkyl ether in an amount sufficient to cause polymerization of said adhesive upon its exposure to ultraviolet light.
Claim 27
Dependent Claim
21 words
The method of claim 16 wherein said adhesive further comprises a visible light sensitizing system and an ultraviolet light sensitizing system.
Claim 28
Dependent Claim
16 words
The method of claim 21, 23, or 25 wherein said adhesive further comprises a polymerization promoter.
Claim 29
Dependent Claim
11 words
The method of claim 16 wherein said polymerization is attained photochemically.
Claim 30
Dependent Claim
13 words
The method of claim 16 wherein said polymerization is attained employing visible light.
Claim 31
Dependent Claim
18 words
The method of claim 16 wherein said heating is accomplished at temperatures of at least about 300° C.
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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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |