Patent US3625875A successfully refreshed from Google Patents.
US3625875A
Expired / Lapsed
US
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Anaerobic adhesive and sealant compositions in nonflowable form
Assignee: Henkel Loctite Corp
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Filing: 1968-02-29
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Granted: 1971-12-07
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Expires: 1988-02-29
Abstract
Abstract Sheets, such as films and gasket material, and coatings 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.
Inventors
- 👤 Elliott Frauenglass
- 👤 William E Cass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:27
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/022; C08F299/024; C08F291/00; C08F291/02; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93; Y10S411/947
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
An adhesive thermoplastic composition which comprises a normally nonflowable thermoplastic polymer having dissolved therein from about 5 percent to about 80 percent by weight of said composition of a liquid 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
278 words
An adhesive thermoplastic composition which consists essentially of from about 20 percent to about 95 percent by weight of said composition of a normally nonflowable thermoplastic polymer, and dissolved in said polymer from about 5 percent to about 80 percent by weight of the composition of a liquid adhesive system consisting essentially of a mixture of a polymerizable acrylate ester monomer and from about 0.1 to about 10 percent by weight of said mixture of a hydroperoxy polymerization initiator for said monomer, said liquid adhesive system being used in an amount which is insufficient to render the composition flowable at 75* F., and said thermoplastic polymer being 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 an average 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 3
Dependent Claim
13 words
The composition of claim 1 wherein the composition is nonflowable at 100* F.
Claim 4
Dependent Claim
41 words
The composition of claim 1 wherein the peroxy polymerization initiator is a hydroperoxy polymerization initiator comprising from about 0.1 percent to about 10 percent by weight of the mixture, and the polymerizable acrylate ester monomer is a polymerizable polyacrylate ester monomer.
Claim 5
Dependent Claim
14 words
The composition of claim 5 wherein the polymerizable acrylate ester has the general formula
Claim 6
Dependent Claim
24 words
The composition of claim 1 wherein the liquid adhesive system comprises from about 10 percent to about 60 percent by weight of the composition.
Claim 7
Dependent Claim
15 words
The composition of claim 2 wherein the peroxy polymerization initiator is a hydroperoxy polymerization initiator.
Claim 8
Dependent Claim
25 words
The composition of claim 3 wherein the normally solid thermoplastic polymer is selected from the polymers of classes (a), (b) and (d) of said claim.
Claim 9
Dependent Claim
16 words
The composition of claim 3 wherein the polymerizable acrylate ester is a polymerizable polyacrylate ester monomer.
References Cited (Backward Citations)
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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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |