US4291131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic nozzles of moldable polyethylene and polypropylene polymers having organic acids dispersed therein
Assignee: Permabond International Corp
•
Filing: 1979-12-10
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Granted: 1981-09-22
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Expires: 1999-12-10
Abstract
Abstract A nozzle for use on containers for holding cyanoacrylate adhesives and comprised of moldable materials having an organic acid dispersed therein for inhibiting the polymerization of the adhesives within the nozzle.
Inventors
- 👤 John M. McIntire
- 👤 Richard H. Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
A nozzle for use on containers for holding cyanocrylate adhesives, said nozzle being comprised of moldable materials selected from polyethylene, polypropylene and crystallizable copolymers of polypropylene containing up to about 10% ethylene, and having an organic acid selected from the group consisting of citric acid, maleic acid and fumaric acid dispersed in said moldable materials in an amount effective to provide an acidic surface for inhibiting the polymerization of said adhesves within said nozzle.
Claim 2
Dependent Claim
74 words
A nozzle for use on containers for holding cyanocrylate adhesives, said nozzle being comprised of moldable materials selected from polyethylene, polypropylene and crystallizable copolymers of polypropylene containing up to about 10% ethylene, and having an organic acid selected from the group consisting of citric acid, maleic acid and fumaric acid dispersed in said moldable materials in an amount effective to provide an acidic surface for inhibiting the polymerization of said adhesves within said nozzle.
Claim 3
Dependent Claim
23 words
A nozzle as defined in claim 1, wherein said organic acid comprises about 0.01% to about 0.5% by weight of said moldable materials.
Claim 4
Dependent Claim
20 words
A nozzle as defined in claim 1, wherein said organic acid comprises about 0.01% by weight of said moldable materials.
Claim 5
Dependent Claim
20 words
A nozzle as defined in claim 1, wherein said organic acid comprises about 0.2% by weight of said moldable materials.
Claim 6
Dependent Claim
20 words
A nozzle as defined in claim 1, wherein said organic acid comprises about 0.3% by weight of said moldable materials.
Claim 7
Dependent Claim
20 words
A nozzle as defined in claim 1, wherein said organic acid comprises about 0.4% by weight of said moldable materials.
Claim 8
Dependent Claim
29 words
A nozzle as defined in claim 1, wherein said moldable material is polyethylene and said organic acid is citric acid comprising about 0.2% by weight of said moldable material.
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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |