Patent US5905099A successfully refreshed from Google Patents.
US5905099A
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Heat-activatable adhesive composition
Assignee: 3M Co
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Filing: 1995-11-06
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Granted: 1999-05-18
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Expires: 2015-11-06
Abstract
Abstract A heat-activatable adhesive comprising an acrylic copolymer, which copolymer comprises a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol having a Tg of about 0 DEG C. or lower; a monomer consisting of an acrylate or methacrylate ester of an alcohol having a Tg of at least about 5 DEG C.; and a functional monomer. Selected embodiments include a retroreflective article comprising a film having a substantially flat surface and a structured surface, the structured surface comprising a plurality of precisely shaped projections, a colored layer disposed on the structured surface and adhered thereto in a plurality of discrete locations, and a heat-activatable adhesive layer disposed on the colored layer.
Inventors
- 👤 Albert I. Everaerts
- 👤 Yoshinori Araki
- 👤 Michiru Hata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:46
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; B32B15/00; B32B27/36; B32B3/00; B32B3/26; B32B3/30; B32B7/00; B32B7/04; B32B7/12; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C09J11/00; C09J11/02; C09J133/062; G; G09; G09F; G09F13/00; G09F13/16; B32B2367/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
115 words
A heat-activatable adhesive composition comprising an acrylic copolymer, said copolymer comprising: (a) about 10 to 85 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol whose homopolymer has a T g of about 0° C. or lower; (b) about 10 to 70 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of an alcohol whose homopolymer has a T g of at least about 50° C.; and (c) about 5 to 50wt-% based on monomer weight of a monomer containing a polar functional group; wherein said heat-activatable adhesive develops a provisional bond under pressure until heat is applied.
Claim 2
Dependent Claim
115 words
A heat-activatable adhesive composition comprising an acrylic copolymer, said copolymer comprising: (a) about 10 to 85 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol whose homopolymer has a T g of about 0° C. or lower; (b) about 10 to 70 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of an alcohol whose homopolymer has a T g of at least about 50° C.; and (c) about 5 to 50wt-% based on monomer weight of a monomer containing a polar functional group; wherein said heat-activatable adhesive develops a provisional bond under pressure until heat is applied.
Claim 3
Dependent Claim
14 words
The adhesive composition of claim 1 which exhibits transparency of at least 85 percent.
Claim 4
Dependent Claim
31 words
The adhesive composition of claim 1 wherein the monomer (a) comprises an acrylate or methacrylate ester of a non-tertiary alkyl alcohol wherein the alkyl moiety contains 4 to 12 carbon atoms.
Claim 5
Dependent Claim
31 words
The adhesive composition of claim 1 wherein the monomer (b) comprises an acrylate or methacrylate ester of a bridged cycloalkyl alcohol having at least 6 carbon atoms or an aromatic alcohol.
Claim 6
Dependent Claim
45 words
The adhesive composition of claim 1 wherein the monomer (a) is selected from the group consisting of n-butyl acrylate, isobutyl acrylate, n-hexyl acrylate, 2-methyl butyl acrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, n-octyl acrylate, n-octyl methacrylate, isooctyl acrylate, isooctyl methacrylate, isononyl acrylate, isodecyl acrylate, and mixtures thereof.
Claim 7
Dependent Claim
29 words
The adhesive composition of claim 1 wherein the monomer (a) is selected from the group consisting of n-butyl acrylate, 2-methyl butyl acrylate, 2-ethylhexyl acrylate, isooctyl acrylate, and mixtures thereof.
Claim 8
Dependent Claim
38 words
The adhesive composition of claim 1 wherein the monomer of part (c) contains a polar functional group selected from the group consisting of carboxylic acid, sulfonic acid, phosphoric acid, hydroxy, lactam, lactone, N-substituted amide, N-substituted amine, and carbamate.
Claim 9
Dependent Claim
42 words
The adhesive composition of claim 1 wherein the monomer of part (c) is selected from the group consisting of acrylic acid, β-carboxyethyl acrylate, methacrylic acid, crotonic acid, fumaric acid, N,N-dimethyl acrylamide, N,N-dimethyl methacrylamide, N,N-diethyl acrylamide, N,N-diethyl methacrylamide, N-vinyl caprolactam, and N-vinyl pyrrolidone.
Claim 10
Dependent Claim
37 words
The adhesive composition of claim 1 wherein the monomer (b) is selected from the group consisting of 3,5-dimethyl adamantyl acrylate; 3,5-adamantyl methacrylate; isobornyl acrylate, isobornyl methacrylate; 4-biphenylyl acrylate; 4-biphenylyl methacrylate; 2-naphthyl acrylate; 2-naphthyl methacrylate; and mixtures thereof.
Claim 11
Dependent Claim
19 words
The adhesive composition of claim 1 wherein the T g of the composition is about 0 to 40° C.
Claim 12
Dependent Claim
37 words
The adhesive composition of claim 1 wherein the composition has an elastic modulus, measured by dynamic mechanical thermal analyzer, 6.28 rad/sec, compression mode ranging from about 5×10 6 to about 1.0×10 8 dyn/cm 2 at 30° C.
Claim 13
Dependent Claim
37 words
The adhesive composition of claim 1 wherein the composition has an elastic modulus, measured by dynamic mechanical thermal analyzer, 6.28 rad/sec, compression mode ranging from about 5×10 5 to about 1×10 7 dyn/cm 2 at 70° C.
Claim 14
Dependent Claim
17 words
The adhesive composition of claim 1 wherein the transparency of the composition is at least 89 percent.
Claim 15
Dependent Claim
33 words
The adhesive composition of claim 1 wherein the acrylic polymer is crosslinked via a crosslinking agent selected from the group consisting of triazine compounds, acrylated urethanes, hydrogen abstraction crosslinking compounds, and acrylated polyols.
Claim 16
Dependent Claim
115 words
A heat-activatable adhesive composition comprising: (a) about 10 to 40 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol whose homopolymer has a T g of about 0° C. or lower; (b) about 25 to 60 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of an alcohol whose homopolymer has a T g of at least about 50° C.; (c) about 10 to 40 wt-% based on monomer weight of a monomer having a polar functional group; (d) about 0.05 to 20 wt.-% of a crosslinking agent; and (e) about 0.05 to 0.3 wt-% of an initiator.
Claim 17
Dependent Claim
115 words
A heat-activatable adhesive composition comprising: (a) about 10 to 40 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol whose homopolymer has a T g of about 0° C. or lower; (b) about 25 to 60 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of an alcohol whose homopolymer has a T g of at least about 50° C.; (c) about 10 to 40 wt-% based on monomer weight of a monomer having a polar functional group; (d) about 0.05 to 20 wt.-% of a crosslinking agent; and (e) about 0.05 to 0.3 wt-% of an initiator.
References Cited (Backward Citations)
US3578622A
Cited
US3684348A
Cited
US4025159A
Cited
US4248748A
Cited
US4329384A
Cited
US4330590A
Cited
US4379201A
Cited
US4588258A
Cited
US4906070A
Cited
US5056892A
Cited
US4805984A
Cited
US4737559A
Cited
US4775219A
Cited
US4946742A
Cited
US4988742A
Cited
JPH02200476A
Cited
US5175030A
Cited
US5183597A
Cited
US5102924A
Cited
US5138488A
Cited
US5308887A
Cited
US5623000A
Cited
US5407971A
Cited
JPH05310810A
Cited
JPH06128544A
Cited
US5334686A
Cited
EP0615983A2
Cited
WO1995010552A1
Cited
WO1995013331A1
Cited
WO1995013328A1
Cited
US5602221A
Cited
US5616670A
Cited
US5620795A
Cited
US5654387A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-05-17 | 2002-11-16 | 2003-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-17 | 2006-11-16 | 2007-05-18 | $3760.00 | Window Closed / Lapsed |
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