US3929550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for promoting polyolefin adhesion
Assignee: AKZO PLASTICS BV A DUTCH CORP
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Filing: 1973-08-27
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Granted: 1975-12-30
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Expires: 1993-08-27
Abstract
Abstract A process for promoting the adhesion of polyolefins to a substrate comprising admixing an olefin polymer with t-butyl beta-hydroxyethyl peroxide, applying the resulting polyolefin to a substrate surface and applying heat and pressure thereto to affect adhesion of the polyolefin to said surface.
Inventors
- 👤 Norman G Gaylord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:05
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; C; C08; C08J; C08J5/00; C08J5/12; B32B15/00; B32B15/04; B32B15/20; B32B9/00; B32B9/005; B32B9/04; B32B9/041; C08K; C08K5/00; C08K5/04; C08K5/14; C08J2323/00; C08J2323/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A PROCESS FOR FORMING A TIGHTLY ADHERENT LAYER OF SOLID OLEFINIC POLYMER ON THE SURFACE OF A SOLID SUBSTRATE WHICH COMPRISING ADMIXING AS THE ENTIRE RESINOUS INGREDIENT PREVIOUSLY UNMODIFIED, NORMALLY SOLID SYBTHETIC RESIN DERIVED ENTIRELY FROM ALPHA MONO-OLEFINICALLY UNSATURATED HYDROCARBONS CONTAINING FROM TWO TO FOUR CARBON ATOMS WITH BETWEEN ABOUT 0.5 AND ABOUT 5% BASED UPON THE WEIGHT OF SAID RESIN OF T-BUTYL BETAHYDROXYETHYL PEROXIDE, APPLYING THE RESULTING MIXTURE DIRECTLY TO THE SURFACE OF SAID SOLID SUBSTRATE AND THEN PRESSING SAID MIXTURE AGAINST SAID SUBSTRATE BY THE APPLICATION OF PRESSURE OF AT LEAST ABOUT 20,000 PSI AND ELEVATED TEMPERATURES IN THE RANGE FROM ABOUT 122* TO ABOUT 190*C UNTIL THE MAJOR PORTION OF SAID T-BUTYLBETHYDROXYETHYL PEROXIDE HAS BEEN DECOMPOSED.
Claim 2
Dependent Claim
119 words
A PROCESS FOR FORMING A TIGHTLY ADHERENT LAYER OF SOLID OLEFINIC POLYMER ON THE SURFACE OF A SOLID SUBSTRATE WHICH COMPRISING ADMIXING AS THE ENTIRE RESINOUS INGREDIENT PREVIOUSLY UNMODIFIED, NORMALLY SOLID SYBTHETIC RESIN DERIVED ENTIRELY FROM ALPHA MONO-OLEFINICALLY UNSATURATED HYDROCARBONS CONTAINING FROM TWO TO FOUR CARBON ATOMS WITH BETWEEN ABOUT 0.5 AND ABOUT 5% BASED UPON THE WEIGHT OF SAID RESIN OF T-BUTYL BETAHYDROXYETHYL PEROXIDE, APPLYING THE RESULTING MIXTURE DIRECTLY TO THE SURFACE OF SAID SOLID SUBSTRATE AND THEN PRESSING SAID MIXTURE AGAINST SAID SUBSTRATE BY THE APPLICATION OF PRESSURE OF AT LEAST ABOUT 20,000 PSI AND ELEVATED TEMPERATURES IN THE RANGE FROM ABOUT 122* TO ABOUT 190*C UNTIL THE MAJOR PORTION OF SAID T-BUTYLBETHYDROXYETHYL PEROXIDE HAS BEEN DECOMPOSED.
Claim 3
Dependent Claim
31 words
A process as described in claim 1 wherein a second substrate is overlayed upon said mixture before applying said pressure and elevated temperature, thereby laminating the first substrate to the second.
Claim 4
Dependent Claim
20 words
A process as described in claim 1 wherein said previously unmodified, normally solid synthetic resin is derived essentially from ethylene.
Claim 5
Dependent Claim
52 words
A thermally activated pressure adhesive composition consisting essentially of a previously unmodified, normally solid synthetic resin derived entirely from alpha mono-olefinically unsaturated hydrocarbons containing from two to four carbon atoms as the only resinous component and between about 0.5 and about 5% based upon the weight of said resin of t-butyl-betahydroxyethyl peroxide.
Claim 6
Dependent Claim
52 words
A thermally activated pressure adhesive composition consisting essentially of a previously unmodified, normally solid synthetic resin derived entirely from alpha mono-olefinically unsaturated hydrocarbons containing from two to four carbon atoms as the only resinous component and between about 0.5 and about 5% based upon the weight of said resin of t-butyl-betahydroxyethyl peroxide.
Claim 7
Dependent Claim
20 words
A thermally activated pressure adhesive composition as defined in claim 4 wherein a finely divided filler additive is also present.
Claim 8
Dependent Claim
21 words
A thermally activated pressure adhesive composition as in claim 4 wherein said previously unmodified, normally solid synthetic resin is a polyethylene.
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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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |