Patent US4844959A successfully refreshed from Google Patents.
US4844959A
Expired / Lapsed
US
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Heat curable adhesive coating
Assignee: Tyco Electronics UK Ltd
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Filing: 1987-10-16
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Granted: 1989-07-04
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Expires: 2007-10-16
Abstract
Abstract Cohesive flexible curable adhesive coatings formed from a dispersion of first and second powdered curing components, preferably reactive at ambient temperatures, in a solution of a binder, the binder content being not more than 15%, preferably not more than 2.5% by weight of the dried composition. Also claimed are curable compositions having a specific advantageous reactive particle size distribution; specific epoxy-amine adduct curing agents; and specific polyalkylene oxide binders.
Inventors
- 👤 Michael J. Read
- 👤 Michael R. Read
- 👤 Stephen J. Osborne
- 👤 Geoffrey P. Hakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:40
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/24; C08J3/241; C09; C09J; C09J187/00; B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0616; C08G; C08G59/00; C08G59/18; C09J7/00; C09J7/20; C09J7/22; C09J7/30; C09J7/35; C08J2363/00; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S524/00; Y10S524/904; Y10S525/00; Y10S525/934; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1352; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2822; Y10T428/2852; Y10T428/287; Y10T428/2896; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
94 words
A heat curable-adhesive coating on a substrate made by coating comprising a mixture of substantially solid particles of a first reactive component with separate substantially solid particles of at least a second reactive component, the first and second reactive components being capable of reacting together to effect curing when the coating is heated to the curing temperature, and the particles having a size distribution in which not more than 40% by weight of the particles are less than 50 micrometers in size and substantially all the particles are less than 300 micrometers in size.
Claim 2
Dependent Claim
94 words
A heat curable-adhesive coating on a substrate made by coating comprising a mixture of substantially solid particles of a first reactive component with separate substantially solid particles of at least a second reactive component, the first and second reactive components being capable of reacting together to effect curing when the coating is heated to the curing temperature, and the particles having a size distribution in which not more than 40% by weight of the particles are less than 50 micrometers in size and substantially all the particles are less than 300 micrometers in size.
Claim 3
Dependent Claim
27 words
A coating according to claim 1, further including a polymeric binder which is substantially unreactive with the first and second reactive components at least at ambient temperatures.
Claim 4
Dependent Claim
16 words
A coating according to claim 2, comprising not more than 15% by weight of the binder.
Claim 5
Dependent Claim
15 words
A coating according to claim 3, comprising 0.5 to 5% by weight of the binder.
Claim 6
Dependent Claim
16 words
A coating according to claim 4, comprising not more than 2.5% by weight of the binder.
Claim 7
Dependent Claim
18 words
A coating according to claim 2, 3, or 4, comprising at least 1% by weight of the binder.
Claim 8
Dependent Claim
28 words
A coating according to claim 2, wherein the particles of the first reactive component are connected to those of the second reactive component substantially only by the binder.
Claim 9
Dependent Claim
17 words
A coating according to claim 1, wherein one of the reactive components is a thermoplastic epoxy resin.
Claim 10
Dependent Claim
22 words
A coating according to claim 8, wherein the or at least one other reactive component is a material having reactive amine groups.
Claim 11
Dependent Claim
29 words
A coating according to claim 8, wherein the or at least one other reactive component is an adduct of the epoxy resin with a compound containing reactive amine groups.
Claim 12
Dependent Claim
18 words
A coating according to claim 9 or 10, wherein the material having reactive amine groups is a polyamide.
Claim 13
Dependent Claim
21 words
A coating according to claim 9 or 10, wherein the material containing reactive amine groups is ethylene diamine or ethylene triamine.
Claim 14
Dependent Claim
31 words
A coating according to claim 1, wherein the particles have a size distribution in which not more than 30% by weight of the particles are less than 50 micrometers in size.
Claim 15
Dependent Claim
23 words
A coating according to claim 2, wherein not more than 60% by weight of the particles are less than 75 micrometers in size.
Claim 16
Dependent Claim
23 words
A coating according to claim 14, wherein not more than 50% by weight of the particles are less than 75 micrometers in size.
Claim 17
Dependent Claim
23 words
A coating according to claim 1, wherein the particles have a weight average particle size in the range from 75 to 125 micrometers.
Claim 18
Dependent Claim
26 words
A coating according to claim 2, wherein the first and second reactive components are capable of reacting together when brought into reactive contact at ambient temperatures.
Claim 19
Dependent Claim
20 words
A coating according to claim 2, wherein electrically conductive solid particles are incorporated to render the cured coating electrically conductive.
Claim 20
Dependent Claim
13 words
A coating according to claim 2, wherein substrate is a dimensionally heat-recoverable article.
Claim 21
Dependent Claim
37 words
A coating according to claim 19, wherein the article is a hollow article with at least one opening to the exterior and has the adhesive coating on the inner surface thereof in the region of an opening.
Claim 22
Dependent Claim
28 words
A coating according to claim 19, wherein a reactive component has a melting or softening point no higher than 20° C. below the recovery temperature of the article.
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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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |