US4935270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat recoverable article with heat curable adhesive coating
Assignee: Tyco Electronics UK Ltd
•
Filing: 1989-03-02
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Granted: 1990-06-19
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Expires: 2009-03-02
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 20:37
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: 21
Claim 1
Independent Claim
104 words
A dimensionally heat-recoverable article having on a surface thereof a heat-curable adhesive 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 components being capable of reacting together to effect curing of the coating when the heat-recoverable article is heated to its recovery 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 at least 90% by weight of the particles are less than 300 micrometers in size.
Claim 2
Dependent Claim
104 words
A dimensionally heat-recoverable article having on a surface thereof a heat-curable adhesive 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 components being capable of reacting together to effect curing of the coating when the heat-recoverable article is heated to its recovery 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 at least 90% by weight of the particles are less than 300 micrometers in size.
Claim 3
Dependent Claim
30 words
An article according to claim 1, wherein the coating further comprises a polymeric binder which is substantially unreactive with the first and second reactive components at least at ambient temperatures.
Claim 4
Dependent Claim
20 words
An article according to claim 2, wherein the coating comprises not more than 15% by weight of the polymeric binder.
Claim 5
Dependent Claim
20 words
An article according to claim 2, wherein the coating comprises between 0.5 to 5% by weight of the polymeric binder.
Claim 6
Dependent Claim
20 words
An article according to claim 2, wherein the coating comprises not more than 2.5% by weight of the polymeric binder.
Claim 7
Dependent Claim
22 words
An article according to claim 3, 4, or 5, wherein the coating comprises at least 1% by weight of the polymeric binder.
Claim 8
Dependent Claim
29 words
An article 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 polymeric binder.
Claim 9
Dependent Claim
19 words
An article according to claim 1, wherein the first reactive component in the coating comprises a thermoplastic epoxy resin.
Claim 10
Dependent Claim
21 words
An article according to claim 8, wherein the second reactive component in the coating comprises a compound containing reactive amine groups.
Claim 11
Dependent Claim
28 words
An article according to claim 8, wherein the second reactive component in the coating comprises an adduct of an epoxy resin with a compound containing reactive amine groups.
Claim 12
Dependent Claim
18 words
An article according to claim 9 or 10, wherein the compound containing reactive amine groups is a polyamide.
Claim 13
Dependent Claim
21 words
An article according to claim 9 or 10, wherein the compound containing reactive amine groups is ethylene diamine or ethylene triamine.
Claim 14
Dependent Claim
34 words
An article according to claim 1, wherein the particles in the coating 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
26 words
An article according to claim 1, wherein not more than 60% by weight of the particles in the coating are less than 75 micrometers in size.
Claim 16
Dependent Claim
26 words
An article according to claim 14, wherein not more than 50% by weight of the particles in the coating are less than 75 micrometers in size.
Claim 17
Dependent Claim
26 words
An article according to claim 1, wherein the particles in the coating have a weight average particle size in the range from 75 to 125 micrometers.
Claim 18
Dependent Claim
29 words
An article according to claim 1, wherein the first and second reactive components in the coating are capable of reacting together when brought into reactive contact at ambient temperature.
Claim 19
Dependent Claim
21 words
An article according to claim 1, wherein the coating further comprises electrically conductive particles to render the cured coating electrically conductive.
Claim 20
Dependent Claim
36 words
An article according to claim 1, wherein the article is a hollow article with at least one opening to the exterior and has the coating on the inner surface thereof in the region of an opening.
Claim 21
Dependent Claim
37 words
An article according to claim 1, wherein at least one of the first and second components in the coating has a melting or softening temperature 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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |