US4746544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for applying a sealant composition
Assignee: RENBEC INTERNATIONAL CORP A CORP OF FLORIDA
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Filing: 1987-01-02
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Granted: 1988-05-24
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Expires: 2007-01-02
Abstract
Abstract In repairing a rupture or opening as described herein the rupture or opening and the adjacent area of the surface in which the rupture or opening occurs is covered by a layer of an alpha-cyanoacrylate which is liquid at 20° C. and has the formula CH 2 ═C(CN)--COOR wherein R is a hydrocarbon radical selected from the group consisting of aliphatic, aromatic and cycloaliphatic hydrocarbon groups of 1-10 carbon atoms and alkoxy, chloro and fluoro derivatives of said hydrocarbon groups in which alkoxy groups there are 1-4 carbon atoms therein; and spreading on the said layer of alpha-cyanoacrylate a layer of a powder comprising rubber.
Inventors
- 👤 Thieo E. Hogen-Esch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:18
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/12; C08; C08F; C08F291/00; C09J; C09J4/00; C09J4/06
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
107 words
A process for applying a sealant comprising the steps of: (a) applying a layer of an alpha-cyanoacrylate over the rupture or opening to be sealed and over the area adjacent to said rupture or opening, said alpha-cyanoacrylate being liquid at 20° C. and having the formula CH 2 ═C(CN)--COOR wherein R is a hydrocarbon radical selected from the group consisting of aliphatic, aromatic and cycloaliphatic hydrocarbon groups of 1-10 carbon atoms and alkoxy, chloro and fluoro derivatives of said hydrocarbon groups in which alkoxy groups there are 1-4 carbon atoms therein; and (b) spreading on the said layer of alpha-cyanoacrylate a layer of a powder comprising rubber.
Claim 2
Dependent Claim
107 words
A process for applying a sealant comprising the steps of: (a) applying a layer of an alpha-cyanoacrylate over the rupture or opening to be sealed and over the area adjacent to said rupture or opening, said alpha-cyanoacrylate being liquid at 20° C. and having the formula CH 2 ═C(CN)--COOR wherein R is a hydrocarbon radical selected from the group consisting of aliphatic, aromatic and cycloaliphatic hydrocarbon groups of 1-10 carbon atoms and alkoxy, chloro and fluoro derivatives of said hydrocarbon groups in which alkoxy groups there are 1-4 carbon atoms therein; and (b) spreading on the said layer of alpha-cyanoacrylate a layer of a powder comprising rubber.
Claim 3
Dependent Claim
18 words
The process of claim 1 in which said R group is an alkyl group of 1-6 carbon atoms.
Claim 4
Dependent Claim
42 words
The process of claim 2 in which said powdered rubber is selected from the group consisting of natural rubber, cis-1,4-polybutadiene, 1,2-polybutadiene, cis-1,4-polyisoprene, poly(chloroprene), butadieneacrylonitrile copolymer, random and block copolymers of styrene and butadiene, poly-(n-butyl-methacrylate) and terpolymers of butadiene, acrylonitrile and acrylic acid.
Claim 5
Dependent Claim
14 words
The process of claim 2 in which said powdered rubber is a reclaimed rubber.
Claim 6
Dependent Claim
13 words
The process of claim 2 in which said powdered rubber is natural rubber.
Claim 7
Dependent Claim
12 words
The process of claim 2 in which said powdered rubber is cis-1,4-polybutadiene.
Claim 8
Dependent Claim
12 words
The process of claim 2 in which said powdered rubber is 1,2-polybutadiene.
Claim 9
Dependent Claim
12 words
The process of claim 2 in which said powdered rubber is cis-1,4-polyisoprene.
Claim 10
Dependent Claim
12 words
The process of claim 2 in which said powdered rubber is poly(chloroprene).
Claim 11
Dependent Claim
13 words
The process of claim 2 in which said powdered rubber is butadiene-acrylonitrile copolymer.
Claim 12
Dependent Claim
25 words
The process of claim 2 in which said powdered rubber is selected from the group consisting of random and block copolymers of styrene and butadiene.
Claim 13
Dependent Claim
12 words
The process of claim 2 in which said powdered rubber is poly-(n-butylmethacrylate).
Claim 14
Dependent Claim
19 words
The process of claim 2 in which said powdered rubber is a terpolymer of butadiene, acrylonitrile and acrylic acid.
Claim 15
Dependent Claim
32 words
The process of claim 2 in which said powdered rubber contains mixed intimately therein 0-95 percent by weight of a powdered solid having hydroxyl, carboxylate or both hydroxyl and carboxylate groups therein.
Claim 16
Dependent Claim
42 words
The process of claim 2 in which said powdered rubber comprises an intimate mixture of 25-75 percent by weight of said powdered rubber and 25-75 percent by weight of a powdered solid having hydroxyl, carboxylate or both hydroxyl and carboxylate groups therein.
Claim 17
Dependent Claim
20 words
The process of claim 15 in which said powdered solid is selected from the group consisting of monosaccharides and polysaccharides.
Claim 18
Dependent Claim
69 words
The process of claim 15 in which said powdered solid is selected from the group consisting of alginate, starch, pectin, carrageenan, locust bean gum, guar gum, cellulose, gum arabic, xanthate gum, sodium bicarbonate, polyvinyl alcohol, vinylalcohol-vinylacetate copolymer having at least 25 percent by weight of vinylalcohol groups therein, sodium salt of polyacrylic acid, sodium salt of polymethacrylic acid, ammonium salt of polyacrylic acid and ammonium salt of polymethacrylic acid.
Claim 19
Dependent Claim
12 words
The process of claim 15 in which said powdered solid is alginate.
Claim 20
Dependent Claim
13 words
The process of claim 15 in which said powdered solid is guar gum.
Claim 21
Dependent Claim
12 words
The process of claim 15 in which said powdered solid is starch.
Claim 22
Dependent Claim
12 words
The process of claim 15 in which said powdered solid is pectin.
Claim 23
Dependent Claim
13 words
The process of claim 15 in which said powdered solid is gum arabic.
Claim 24
Dependent Claim
13 words
The process of claim 17 in which said alpha-cyanoacrylate is the methyl ester.
Claim 25
Dependent Claim
13 words
The process of claim 17 in which said alpha-cyanoacrylate is the ethyl ester.
Claim 26
Dependent Claim
18 words
The process of claim 17 in which said alpha-cyanoacrylate is a mixture of the methyl and ethyl esters.
Claim 27
Dependent Claim
13 words
The process of claim 17 in which said alpha-cyanoacrylate is a butyl ester.
Claim 28
Dependent Claim
13 words
The process of claim 17 in which said alpha-cyanoacrylate is a propyl ester.
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) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |