Patent US3757828A successfully refreshed from Google Patents.
US3757828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-impermeable surfaces coated with an adhesive composition
Assignee: Henkel Loctite Corp
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Filing: 1971-06-08
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Granted: 1973-09-11
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Expires: 1991-06-08
Abstract
Abstract Sheet coating compositions which are adhesive in nature can be made from a thermoplastic polymer by plasticizing the polymer with an anaerobic adhesive, i.e., a mixture of a polymerizable liquid acrylate ester monomer and a peroxy polymerization initiator therefor. Such compositions are used effectively as preapplied coatings for air-impermeable surfaces in sealing and bonding applications.
Inventors
- 👤 E Frauenglass
- 👤 W Cass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:58
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/022; C08F299/024; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93; Y10S411/947; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
An article comprising an air-impermeable surface for entering sealed engagement with a mating surface, said air-impermeable surface being coated with an adhesive coating composition which comprises a normally non-flowable thermoplastic polymer having dissolved therein from about 5 percent to about 80 percent by weight of said adhesive coating composition of a liquid anaerobic adhesive system comprising a mixture of a polymerizable acrylate ester monomer and from about 0.1 percent to about 20 percent by weight of said mixture of a peroxy polymerization initiator for said monomer, said liquid adhesive system being present in an amount insufficient to render the composition flowable at 75*F.
Claim 2
Dependent Claim
14 words
The article of claim 2 wherein the peroxy polymerization initiator is an organic hydroperoxide.
Claim 3
Dependent Claim
24 words
The article of claim 2 wherein the polymerizable acrylate ester is a polymerizable polyacrylate ester monomer, and the peroxy initiator is an organic hydroperoxide.
Claim 4
Dependent Claim
26 words
The article of claim 2 wherein the liquid anaerobic adhesive system comprises from about 10 percent to about 60 percent by weight of the coating composition.
Claim 5
Dependent Claim
182 words
The article of claim 2 wherein the normally nonflowable thermoplastic polymer is selected from the classes consisting of the following: (a) acrylate polymers having an average molecular weight between about 5,000 and 500,000; (b) cellulose esters having an average molecular weight between about 50,000 and about 500,000; (c) butadiene-styrene copolymers having an average molecular weight between about 5,000 and about 500,000; (d) acrylonitrile-butadiene-styrene copolymers having an average molecular weight between about 5,000 and about 100,000; (e) vinyl chloride polymers having an average molecular weight between about 10,000 and about 500,000; (f) copolymers of either vinyl chloride or vinylidine chloride with vinyl acetate, having an average molecular weight between about 10,000 and about 500,000; (g) cellulose ethers having an average molecular weight between about 50,000 and about 500,000; (h) vinyl acetate polymers, and hydrolysis derivatives thereof, having annaverage molecular weight between about 12,000 and about 50,000; (i) linear polyesters having an average molecular weight between about 3,000 and about 10,000; (j) linear polyurethanes having an average molecular weight between about 3,000 and about 50,000; and (k) mixtures of any of (a) through (j).
Claim 6
Dependent Claim
14 words
The article of claim 6 wherein the polymerizable acrylate ester has the general formula:
Claim 7
Dependent Claim
120 words
The article of claim 2 wherein the composition is non-flowable at 100*F. 9. A threaded article prepared from an air-impermeable substance, at least a portion of the threaded area of said article being coated with an adhesive coating composition which comprises a normally non-flowable thermoplastic polymer having dissolved therein from about 5 percent to about 80 percent by weight of said adhesive coating composition of a liquid anaerobic adhesive system comprising a mixture of a polymerizable acrylate ester monomer and from about 0.1 percent to about 20 percent by weight of said mixture of a peroxy polymerization initiator for said monomer, said liquid adhesive system being present in an amount insufficient to render the adhesive coating composition flowable at 100*F.
Claim 8
Dependent Claim
14 words
The threaded article of claim 9 wherein said article is a metallic threaded fastener.
Claim 9
Dependent Claim
17 words
The threaded article of claim 9 wherein the article is a metallic threaded pipe or pipe fitting.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |