EP0157478B1
Expired / Lapsed
EP
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Adhesive composition
Assignee: Raychem Ltd
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Filing: 1985-02-13
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Granted: 1988-04-27
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Expires: 2005-02-13
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 John Read
- 👤 Michael Rosser Read
- 👤 Stephen J. Osborne
- 👤 Geoffrey Peter Hakes
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:16
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: 33
Claim 1
Independent Claim
73 words
A heat-curable adhesive composition comprising (a) a mixture of substantially solid particles of a first reactive component with separate substantially solid particles of at least a second reactive component and (b) a water-soluble polymeric binder having substantially no free hydroxyl groups, the first and second reactive components being present in the composition as substantially unreacted separate particles capable of reacting together to effect curing when the composition is heated to the curing temperature.
Claim 2
Dependent Claim
73 words
A heat-curable adhesive composition comprising (a) a mixture of substantially solid particles of a first reactive component with separate substantially solid particles of at least a second reactive component and (b) a water-soluble polymeric binder having substantially no free hydroxyl groups, the first and second reactive components being present in the composition as substantially unreacted separate particles capable of reacting together to effect curing when the composition is heated to the curing temperature.
Claim 3
Dependent Claim
23 words
A composition according to claim 1 comprising not more than 10% by weight, preferably not more than 5% by weight, of the binder.
Claim 4
Dependent Claim
16 words
A composition according to claim 2, comprising not more than 2.5% by weight of the binder.
Claim 5
Dependent Claim
18 words
A composition according to any of the preceding claims comprising at least 1% by weight of the binder.
Claim 6
Dependent Claim
14 words
A composition according to any of the preceding claims carried on a flexible substrate.
Claim 7
Dependent Claim
31 words
A composition according to claim 5 carried on a heat-recoverable polymeric article capable of being recovered into contact with a substrate with the adhesive composition between the article and the substrate.
Claim 8
Dependent Claim
32 words
A composition according to any of the preceding claims wherein the particles of the first reactive component are connected to those of the second reactive component substantially only by the said binder.
Claim 9
Dependent Claim
48 words
A composition according to any of the preceding claims, wherein the reactive component particles have a size distribution in which not more than 40% by weight of the particles are less than 50 micrometres in size and substantially all the particles are less than 300 micrometres in size.
Claim 10
Dependent Claim
22 words
A composition as claimed in any of claims 1 to 8, wherein one of the reactive components is a thermoplastic epoxy resin.
Claim 11
Dependent Claim
23 words
A composition as claimed in claim 9, wherein the or at least one other reactive component is a material having reactive amine groups.
Claim 12
Dependent Claim
34 words
A composition as claimed in claim 9 and 10, wherein the or at least one material having reactive amine groups is an adduct of the epoxy resin with the material having reactive amine groups.
Claim 13
Dependent Claim
19 words
A composition as claimed in claim 10 or 11, wherein the material having reactive amine groups is a polyamide.
Claim 14
Dependent Claim
23 words
A composition as claimed in claim 10 or 11, wherein the said material having reactive amine groups is ethylene diamine or ethylene triamine.
Claim 15
Dependent Claim
36 words
A composition as claimed in any one of the preceding claims, wherein the particles have a size distribution in which not more than 30% by weight of the particles are less than 50 micrometres in size.
Claim 16
Dependent Claim
28 words
A composition as claimed in any one of the preceding claims, wherein not more than 60% by weight of the particles are less than 75 micrometres in size.
Claim 17
Dependent Claim
24 words
A composition as claimed in claim 15, wherein not more than 50% by weight of the particles are less than 75 micrometres in size.
Claim 18
Dependent Claim
29 words
A composition as claimed in any one of the preceding claims, wherein the particles have a weight average particle size in the range of from 75 to 125 micrometres.
Claim 19
Dependent Claim
29 words
A composition according to any of the preceding claims, wherein the first and second reactive components are capable of reacting together when brought into reactive contact at ambient temperatures.
Claim 20
Dependent Claim
23 words
A composition according to any of the preceding claims, wherein electrically conductive solid particles are incorporated to render the cured composition electrically conductive.
Claim 21
Dependent Claim
16 words
A composition according to any of the preceding claims, wherein the binder comprises a polyvinyl acetate.
Claim 22
Dependent Claim
20 words
A composition according to any of claims 1 to 19, wherein the binder comprises a substituted or unsubstituted polyalkylene oxide.
Claim 23
Dependent Claim
13 words
A composition as claimed in claim 21, wherein the binder comprises polyethylene oxide.
Claim 24
Dependent Claim
34 words
A composition as claimed in any one of the preceding claims, wherein the polymeric binder is present in an amount of up to 15% by weight, based on the dry weight of the composition.
Claim 25
Dependent Claim
31 words
A composition as claimed in claim 23, wherein the binder is present in an amount of from 0.5 to 5% by weight, based on the total dry weight of the composition.
Claim 26
Independent Claim
40 words
A method of manufacturing a heat-curable adhesive coating comprising applying to a substrate a composition according to any of the preceding claims dispersed in a liquid which is substantially a non-solvent for the reactive components, and removing the said liquid.
Claim 27
Dependent Claim
40 words
A method according to claim 25, wherein the particles of the first reactive component are freely moveable in the dispersion relative to the particles of the second reactive component, so as to produce a coating composition according to claim 7.
Claim 28
Dependent Claim
25 words
A method as claimed in claim 25 or 26, wherein the adhesive composition is applied to the surface of the substrate from an aqueous dispersion.
Claim 29
Dependent Claim
26 words
A method as claimed in claim 25, 26 or 27, wherein the adhesive composition is applied to the surface of the substrate by a dip-coating method.
Claim 30
Dependent Claim
14 words
A coating obtainable by a method according to any of claims 25 to 28.
Claim 31
Dependent Claim
38 words
A dimensionally heat-recoverable article having on at least part of a surface thereof, an adhesive composition as claimed in any one of claims 1 to 24, or a coating of such a composition as claimed in claim 29.
Claim 32
Dependent Claim
38 words
An article as claimed in claim 30 which is a hollow article with at least one opening to the exterior and has the adhesive composition on the inner surface thereof in the region of the or each opening.
Claim 33
Dependent Claim
32 words
An article as claimed in claim 30 or 31 wherein the or each reactive component has a melting or softening point no higher than 20°C below the recovery temperature of the article.
References Cited (Backward Citations)
No citation records indexed.
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