EP0108630A2
Expired / Lapsed
EP
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Radiation-curable adhesive compositions
Assignee: Deltaglass SA
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Filing: 1983-11-04
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Granted: —
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Expires: 2003-11-04
Abstract
Abstract Radiation curable composition suitable for use as an adhesive for bonding giass. especially for the production of clear glass laminates, and comprising a urethane acrylate component in an αβ-ethylenically unsaturated diluent which comprises (i) acrylic acid, (ii) a monoester of acrylic acid and a C 1 -C 5 alkanol or substituted derivative thereof said monoester being present in an amount of up to 400% by weight of component (i), and optionally (iii) up to 40% by weight of a multiacrylate.
Inventors
- 👤 Pierre Chevreux
- 👤 Christiane A.R. Chevreux
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 09:52
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; C09J175/14; C09J175/16; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10706; B32B17/10743; C08; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C09J4/00
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
157 words
A radiation-curable fluid adhesive composition for the production of clear glass laminate and of the kind comprising (a) a preferably oligomeric urethane acrylate component, in (b) a liquid αβ-ethylenically unsaturated diluent component, said composition also optionally containing (c) a photoinitiator, wherein said diluent component comprises (i) acrylic acid, (ii) an effective amount of at least one acrylate selected from monoesters of acrylic'acid and alkanols having from 1 to 6 carbon atoms and substituted derivatives of such alkanols preferably containing only carbon, hydrogen and oxygen atoms, said component (ii) being present in an amount up to 400% by weight of component (i), and (iii) from 0% to about 40%, and preferably from 0% to about 30%, by weight of a multiacrylate, said acrylic acid forming preferably at least 50% by weight of the αβ-ethylenically unsaturated carboxylic acid content of the diluent and said acrylic acid and acrylate together forming preferably at least 50% by weight of the diluent.
Claim 2
Dependent Claim
157 words
A radiation-curable fluid adhesive composition for the production of clear glass laminate and of the kind comprising (a) a preferably oligomeric urethane acrylate component, in (b) a liquid αβ-ethylenically unsaturated diluent component, said composition also optionally containing (c) a photoinitiator, wherein said diluent component comprises (i) acrylic acid, (ii) an effective amount of at least one acrylate selected from monoesters of acrylic'acid and alkanols having from 1 to 6 carbon atoms and substituted derivatives of such alkanols preferably containing only carbon, hydrogen and oxygen atoms, said component (ii) being present in an amount up to 400% by weight of component (i), and (iii) from 0% to about 40%, and preferably from 0% to about 30%, by weight of a multiacrylate, said acrylic acid forming preferably at least 50% by weight of the αβ-ethylenically unsaturated carboxylic acid content of the diluent and said acrylic acid and acrylate together forming preferably at least 50% by weight of the diluent.
Claim 3
Dependent Claim
106 words
A composition as claimed in claim 1 wherein said at least one acrylate is selected from monester of acrylic acid with alcohols having the structure wherein R is -H, -OH or a monovalent organic group containing atoms selected only from carbon, oxygen and hydrogen, and having not more than 4 atoms in a chain attached to the free valency, and each R' is individually selected from -H and -CH 3 , or R and R' together may form a divalent group containing atoms selected only from carbon, hydrogen and oxygen, the sum of the carbon and oxygen atoms in said alcohol being from 4 to 7.
Claim 4
Dependent Claim
14 words
A composition as claimed in claim 1 in which the acrylate is n-butyl acrylate.
Claim 5
Dependent Claim
53 words
A composition according to claim 1, claim 2 or claim 3 in which the acrylate is present in an amount of from about 25% to about 70%, preferably about 35 to about 70% and more preferably about 40% to about 60%, by weight, based on the combined weight of acrylate and acrylic acid.
Claim 6
Dependent Claim
34 words
A composition according to any one of claims 1 to 4 wherein the urethane acrylate component forms from about 45 to about 75%, preferably about 50 to about 70%, by weight of the composition.
Claim 7
Dependent Claim
33 words
A composition according to any one of claims 1 to 5 wherein the urethane acrylate component is formed at least mainly of oligomeric material having a molecular weight M N above about 1500.
Claim 8
Dependent Claim
35 words
A composition according to any one of claims 1 to 6 wherein the urethane acrylate component is derived from polyisocyanate at least most of the isocyanate groups of which are attached to aliphatic carbon atoms.
Claim 9
Dependent Claim
29 words
A composition as claimed in any one of claims 1 to 7 in which the urethane acrylate component is derived from polyol which is at least mainly polyether polyol.
Claim 10
Dependent Claim
51 words
A composition according to any one of claims 1 to 8 wherein the urethane acrylate oligomer component comprises a mixture of (a) generally difunctional urethane acrylate material and (b) urethane acrylate which has a functionality of at least about 3 and a molecular weight M N of at least about 1300.
Claim 11
Dependent Claim
50 words
A composition according to claim 9 in which the generally difunctional urethane acrylate material is present in the mixture- in a major amount and the urethane acrylate having a functionality of at least about 3 is preferably present in an amount of 0.5 to 30% by weight of the mixture.
Claim 12
Dependent Claim
47 words
A composition as claimed in claim 9 or claim 10 in which component (a) comprises urethane acrylate oligomer containing about 2 αβ-ethylenically unsaturated groups per molecule, and is derived from polyol which is at least mainly polyether polyol and is at least substantially free of ester groups.
Claim 13
Dependent Claim
25 words
A composition as claimed in claim 9, 10, or 11 in which component (b) is derived from polyol which is at least mainly polyester polyol.
Claim 14
Dependent Claim
22 words
A composition as claimed in claim 12 in which component (b) is derived from polyol which is derived from lactone, preferably caprolactone.
Claim 15
Dependent Claim
28 words
A composition as claimed in any one of claims 1 to 13- wherein all or substantially all of the unsaturation in the urethane acrylate component is terminal αβ-unsaturation.
Claim 16
Dependent Claim
41 words
A composition as claimed in any one of claims 1 to 14 which includes at least one further resinous material preferably selected from epoxy resins and balsamic resins and preferably in an amount not exceeding 50% by weight of the composition.
Claim 17
Dependent Claim
31 words
A composition as claimed in claim 15 in which said further resinous material is balsamic resin and is present in an amount of up to 10% by weight of the composition.
Claim 18
Dependent Claim
59 words
A composition as claimed in any one of claims 1 to 16 having a viscosity of 300 to 1200 cp as measured at 20°C on a Brookfield LV viscometer using a No. 1 spindle at 6 rpm, a bond strength in the cured state of at least about 300 g/cm and a bond "driness" of C as herein defined.
Claim 19
Dependent Claim
24 words
A composition as claimed in any one of claims 1 to 17 having a bond strength as herein defined of at least 500 g/cm.
Claim 20
Dependent Claim
91 words
A u.v.-radiation curable adhesive composition comprising urethane acrylate and an αβ-ethylenically unsaturated diluent therefor and having a viscosity of 1200 cp or less, measured using a Brookfield LV viscometer with a No. 1 spindle at 6 rpm at 20°C, and a cure time, as herein defined, of 30 seconds or less, and which cures to a clear and colourless adhesive layer having a bond strength of at least 500 g/cm, a water-resistance of at least 4 and u.v.-resistance of 0, where bond strength, water-resistance and u.v.-resistance are all as defined herein.
Claim 21
Dependent Claim
91 words
A u.v.-radiation curable adhesive composition comprising urethane acrylate and an αβ-ethylenically unsaturated diluent therefor and having a viscosity of 1200 cp or less, measured using a Brookfield LV viscometer with a No. 1 spindle at 6 rpm at 20°C, and a cure time, as herein defined, of 30 seconds or less, and which cures to a clear and colourless adhesive layer having a bond strength of at least 500 g/cm, a water-resistance of at least 4 and u.v.-resistance of 0, where bond strength, water-resistance and u.v.-resistance are all as defined herein.
Claim 22
Independent Claim
76 words
A method of producing a clear glass laminate which involves bonding a first sheet of glass to a second sheet which is selected from glass sheets and clear plastics sheets using an adhesive, wherein as adhesive there is used a composition as claimed in any one of the preceding claims and the assembly of sheets with a layer of the adhesive composition therebetween is exposed to irradiation to cure the adhesive and bond the sheets together.
Claim 23
Independent Claim
107 words
A method of producing a clear glass laminate in which one face of a clear plastics foil or film interlayer is bonded to a glass sheet and the other face is bonded to a second sheet which is selected from glass sheets and clear plastics sheets, wherein the bonding of at least said glass sheet to said interlayer is effected by means of an adhesive composition as claimed in any one of claims 1 to 19 and the assembly of glass sheet and interlayer with a layer of the adhesive composition therebetween is exposed to irradiation to cure the adhesive and bond the sheet and interlayer together.
Claim 24
Dependent Claim
47 words
A laminate comprising a first sheet of glass bonded to a second sheet which is selected from glass sheets and clear plastics sheets by means of a layer of a composition as claimed in any one of claims 1 to 19 which has been cured by irradiation.
Claim 25
Dependent Claim
79 words
A laminate comprising a clear plastics foil or film interlayer one face of which is bonded to a glass sheet and the other face of which is bonded to a second sheet selected from glass sheets and clear plastics sheets and wherein at least the bond between the interlayer and the glass sheet is by means of a layer of a composition as claimed in any one of claims 1 to 19 . which has been cured by irradiation.
Claim 26
Dependent Claim
28 words
A radiation-curable urethane acrylate composition which includes an age-improving amount of a balsamic resin which is preferably present in an amount of from 0.5 to 50% by weight.
Claim 27
Dependent Claim
28 words
A radiation-curable urethane acrylate composition which includes an age-improving amount of a balsamic resin which is preferably present in an amount of from 0.5 to 50% by weight.
References Cited (Backward Citations)
No citation records indexed.
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