EP0209337A2
Expired / Lapsed
EP
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Adhesives
Assignee: Smith and Mclaurin Ltd
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Filing: 1986-07-14
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Granted: —
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Expires: 2006-07-14
Abstract
Abstract Adhesive compositions comprising infusible, solvent-insoluble, solvent-dispersible, inherently tacky, elastomeric polymeric microspheres having a composition formed from non-ionic monomers, optionally including ionic co-monomers further comprise an agent which remains unreacted during polymerization of the said monomers to form microspheres and is available for subsequently binding the microspheres through electrostatic interaction or chemical bonding with a substrate/ binder coated substrate such as paper, PVC or polyethylene film. The agent is preferably a monomer with a reactive group such as a heterocyclic group containing a quaternizable nitrogen or an epoxy, hydroxy or carboxy group capable of being cross-linked to the substrate by use of a reagent such as an aziridine or ammonium zirconium carbonate.
Inventors
- 👤 Eric Thomson
- 👤 Elizabeth Parks
- 👤 Kenneth Allan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 02:57
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/30; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J2301/00; C09J2301/40; C09J2301/412
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
70 words
Infusible, solvent-insoluble, solvent-dispersible, inherently tacky, elastomeric polymeric microspheres having a composition formed from-non-ionic monomers alone or together with a proportion of ionic co-monomers characterised in that said composition additionally comprises an agent which remains unreacted during polymerization to form the microspheres and is available for subsequent use in binding the polymerized microspheres through electrostatic interaction or chemical bonding with a substrate or with a suitable binder applied to said substrate.
Claim 2
Dependent Claim
70 words
Infusible, solvent-insoluble, solvent-dispersible, inherently tacky, elastomeric polymeric microspheres having a composition formed from-non-ionic monomers alone or together with a proportion of ionic co-monomers characterised in that said composition additionally comprises an agent which remains unreacted during polymerization to form the microspheres and is available for subsequent use in binding the polymerized microspheres through electrostatic interaction or chemical bonding with a substrate or with a suitable binder applied to said substrate.
Claim 3
Dependent Claim
61 words
Microspheres according to claim 1 wherein said agent is a monomer of the formula CH 2 = C R 1 R 2 wherein R 1 is hydrogen or the group -CO(CH 2 ) n -NH 2 in which n may be O or a positive whole number and R 2 is a substituted or unsubstituted heterocyclic group containing a quaternizable nitrogen.
Claim 4
Dependent Claim
15 words
Microspheres according to claim 2 wherein the heterocyclic group is a pyridyl or quinolyl group.
Claim 5
Dependent Claim
11 words
Microspheres according to claim 3 wherein the heterocyclic group is 4-pyridyl.
Claim 6
Dependent Claim
11 words
Microspheres according to claim 3 wherein the heterocyclic group is 6-quinolyl.
Claim 7
Dependent Claim
16 words
Microspheres according to claim 2 wherein the heterocvclic qroup is a 4-alkvl pvridvl group or a
Claim 8
Dependent Claim
26 words
Microspheres according to claim 1 wherein said agent is a monomer having a reactive group capable of undergoing a chemically, thermally or radiation activated cross-linking reaction.
Claim 9
Dependent Claim
34 words
Microspheres according to claim 7 wherein the monomer has a pendent epoxy group for subsequent cross-linking by irradiation or by reaction with an amine cross-linking agent to a reactive group in a substrate/binder-coated substrate.
Claim 10
Dependent Claim
31 words
Microspheres according to claim 7 wherein the monomer has a carboxyl or hydroxyl group for subsequent cross-linking by reaction with an ionizing agent to a reactive group in a substrate/binder-coated substrate.
Claim 11
Dependent Claim
22 words
Microspheres according to any one of the preceding claims wherein the elastomeric polymer comprises at least one alkyl acrylate or methacrylate ester.
Claim 12
Dependent Claim
24 words
Microspheres according to claim 10 wherein the elastomeric polymer comprises at least one of 2-ethyl hexyl acrylate, n-butyl acrylate, methyl methacrylate and n-butyl methacrylate.
Claim 13
Dependent Claim
27 words
Microspheres according to any one of the preceding claims wherein the elastomeric polymer comprises as ionic comonomer N-(3-sulphopropyl)-N-methacroylamidopropyl-N,N-dimethyl ammonium betaine, 1-(3-sulphopropyl)-2-vinyl- pyridinium betaine or sodium styrene sulphonate.
Claim 14
Dependent Claim
20 words
Microspheres according to claim 12 wherein said ionic comonomer comprises from 0.5 to 5% by weight of total monomer content.
Claim 15
Dependent Claim
64 words
A process for preparing an adhesive coating composition containing infusible, solvent-insoluble, solvent dispersible, inherently tacky, elastomeric polymeric microspheres which comprises carrying out a suspension polymerization of suitable non-ionic monomers alone or together with a proportion of ionic monomers characterised in that the polymerization is carried out in the presence of a non-ionic stabilizer which provides the predominant means of providing a stable coating composition.
Claim 16
Dependent Claim
64 words
A process for preparing an adhesive coating composition containing infusible, solvent-insoluble, solvent dispersible, inherently tacky, elastomeric polymeric microspheres which comprises carrying out a suspension polymerization of suitable non-ionic monomers alone or together with a proportion of ionic monomers characterised in that the polymerization is carried out in the presence of a non-ionic stabilizer which provides the predominant means of providing a stable coating composition.
Claim 17
Dependent Claim
17 words
A process according to claim 14 wherein the non- i ionic stabilizer is a polyvinyl alcohol derivative.
Claim 18
Dependent Claim
21 words
A process according to claim 15 wherein the solids content of the composition is in the region of 45% by weight.
Claim 19
Dependent Claim
110 words
A process for preparing an adhesive coating composi- ) tion containing infusible, solvent insoluble, solvent dispersible, inherently tacky, elastomeric polymeric microspheres which comprises carrying out a suspension polymerization of a reaction mixture having an aqueous phase containing an anionic or non-ionic stabilizer, and an organic phase containing non-ionic monomers alone or together with a proportion of ionic monomers in an organic solvent characterised in that said reaction mixture additionally contains an agent which remains unreacted during polymerization to form the microspheres and is available for subsequent use in binding the polymerized microspheres through electrostatic interaction or chemical bonding with a substrate or with a suitable binder applied to said substrate.
Claim 20
Dependent Claim
110 words
A process for preparing an adhesive coating composi- ) tion containing infusible, solvent insoluble, solvent dispersible, inherently tacky, elastomeric polymeric microspheres which comprises carrying out a suspension polymerization of a reaction mixture having an aqueous phase containing an anionic or non-ionic stabilizer, and an organic phase containing non-ionic monomers alone or together with a proportion of ionic monomers in an organic solvent characterised in that said reaction mixture additionally contains an agent which remains unreacted during polymerization to form the microspheres and is available for subsequent use in binding the polymerized microspheres through electrostatic interaction or chemical bonding with a substrate or with a suitable binder applied to said substrate.
Claim 21
Dependent Claim
55 words
A process according to claim 17 wherein (a) the agent is a co-monomer having an affinity for the substrate or binder; or (b) the agent is a co-monomer which has a reactive group which is capable of undergoing a chemically, thermally or radiation activated cross-linking reaction with a reactive group in a substrate or binder.
Claim 22
Dependent Claim
17 words
A process according to claim 18 wherein the reactive group is a carboxy, epoxy or hydroxy group.
Claim 23
Dependent Claim
19 words
A process according to claim 19 wherein cross-linking is effected by use of ammonium zirconium carbonate or an aziridine.
Claim 24
Dependent Claim
50 words
A process according to claim 17 wherein a cross-linking agent is added to the adhesive coating composition prior to coating a substrate/binder coated substrate with said composition so that after the adhesive is applied to the substrate and the water and/or solvent is evaporated off the cross-linking reaction takes place.
Claim 25
Dependent Claim
58 words
A process according to claim 17 wherein a cross-linking agent is pre-coated onto a substrate in an unactivated state and an activator is added to the adhesive coating composition prior to coating said substrate so that after the adhesive is applied to the substrate and the water and/or a solvent is evaporated off the cross-linking reaction takes place.
Claim 26
Dependent Claim
27 words
A process according to claim 17 wherein a carboxylated polymer binder is added to the adhesive coating composition prior to coating of a substrate with said composition.
Claim 27
Dependent Claim
18 words
An adhesive composition whenever prepared by a process as claimed in any one of claims 14 to 23.
Claim 28
Dependent Claim
18 words
An article comprising a substrate having a surface coated with an adhesive composition as claimed in claim 24.
Claim 29
Dependent Claim
32 words
An article comprising a substrate having a surface to which microspheres according to any one of claims 1 to 13 are firmly attached by electrostatic interaction or chemical bonding with said surface.
Claim 30
Dependent Claim
15 words
An article according to claim 26 wherein the substrate is paper, PVC or polyethylene film.
References Cited (Backward Citations)
No citation records indexed.
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