US4725488A
Expired / Lapsed
US
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Articles bonded with poly(ester-amide) compositions
Assignee: Henkel Corp
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Filing: 1986-11-21
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Granted: 1988-02-16
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Expires: 2006-11-21
Abstract
Abstract A certain class of poly(ester-amide) polymers are disclosed which are particularly suitable as hot melt adhesive compositions particularly advantageous for bonding plastics, such as polyester or polycarbonate polymers. The particular class of poly(ester-amides) are those which include a polymeric fat acid, and more specifically a dimeric fat acid component, in which the ester segments will contribute from about 20, preferably 35 to about 60 weight percent of the poly(ester-amide) and the amide segment contributing the remainder.
Inventors
- 👤 Dale G. Swan
- 👤 Jerry C. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:08
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31786; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/3415
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
An article having at least two substrates bonded to each other with a poly(ester-amide) composition which comprises the product of polymerization of: (a) from about 10 to 80 equivalent percent of a polymeric fatty acid and (b) from about 20 to 90 equivalent percent of a dicarboxylic acid, with a substantially equivalent amount of (c) from about 40 to 90 equivalent percent of an organic diamine and (d) from about 10 to 60 equivalent percent of a diol wherein the amount of the reactants are selected and adjusted so as to provide a polymer containing from about 20 to 60 percent by weight of ester segments, the remainder of said segments being amide.
Claim 2
Dependent Claim
113 words
An article having at least two substrates bonded to each other with a poly(ester-amide) composition which comprises the product of polymerization of: (a) from about 10 to 80 equivalent percent of a polymeric fatty acid and (b) from about 20 to 90 equivalent percent of a dicarboxylic acid, with a substantially equivalent amount of (c) from about 40 to 90 equivalent percent of an organic diamine and (d) from about 10 to 60 equivalent percent of a diol wherein the amount of the reactants are selected and adjusted so as to provide a polymer containing from about 20 to 60 percent by weight of ester segments, the remainder of said segments being amide.
Claim 3
Dependent Claim
23 words
An article as defined in claim 1 wherein said substrates are selected from the group consisting of tinplate, steel, aluminum and a plastic.
Claim 4
Dependent Claim
26 words
An article as defined in claim 2 wherein said plastic is selected from the group consisting of a polyester, polycarbonate, polyacrylic, polyvinyl, polyamide and acrylonitrile-butadiene-styrene polymers.
Claim 5
Dependent Claim
17 words
An article as defined in claim 1 in which one of said substrates is a polyester polymer.
Claim 6
Dependent Claim
17 words
An article as defined in claim 1 in which one of said substrates is a polycarbonate polymer.
Claim 7
Dependent Claim
19 words
An article as defined in claim 1 wherein said article is a trilaminate of polyester, aluminum and polyester layers.
Claim 8
Dependent Claim
14 words
An article as defined in claim 1 wherein one of said substrates is canvas.
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) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |