Patent US5281473A successfully refreshed from Google Patents.
US5281473A
Expired / Lapsed
US
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Radiation-curable adhesive tape
Assignee: Furukawa Electric Co Ltd
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Filing: 1992-02-25
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Granted: 1994-01-25
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Expires: 2012-02-25
Abstract
Abstract There is provided a radiation-curable adhesive tape comprising a radiation-curable adhesive layer which is formed on a radiation transmitting-substrate. The radiation-curable adhesive layer is composed of an acrylic adhesive and radiation-curable compound having carbon-carbon double bonds. The radiation-curable tape can be used preferably in processing steps for the production of semiconductor wafer, ceramics and glass employing a direct picking-up system.
Inventors
- 👤 Shinichi Ishiwata
- 👤 Michio Ueyama
- 👤 Hiroyuki Nakae
- 👤 Yoshiyuki Funayama
- 👤 Kazushige Iwamoto
- 👤 Isamu Noguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:16
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/70; H10P72/74; H10P72/7402; C; C09; C09J; C09J4/00; C09J4/06; C09J7/00; C09J7/20; C09J7/29; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C09J2203/00; C09J2203/326; C09J2301/00; C09J2301/10; C09J2301/16; C09J2301/162; H10P72/7416; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2809; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T428/2896
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
139 words
A radiation-curable adhesive tape, having a ratio of 50% modulus (20° C.) to 25% modulus (20° C.) of at least 1.2 with the 25% modulus (20° C.) being 60 kg/cm 2 or less, which tape comprises a radiation transmitting substrate comprising at least two kinds of resin layers and being composed of a multi-layer film having at least three layers including an intermediate layer having rubber-like properties and being selected from a soft poly(vinyl chloride) resin layer or an elastomer, and a radiation-curable adhesive layer comprising an acrylic adhesive formed on one side of the substrate containing 5 to 500 parts by weight of an isocyanurate compound per 100 parts by weight of the acrylic adhesive; the isocyanurate compound being selected from the group consisting of: tris (acryloxyethyl) isocyanurate, tris (methacryloxyethyl) isocyanurate, tris-4-acryloxy-n-butylisocyanurate, tris(1,3-diacryloxy-2-propyloxycarbonylamine-n-hexyl) isocyanurate, tris(1-acryloxy-3-methacryloxy-2-propyloxycarbonylamino-n-hexyl) isocyanurate and bis(2-acryloxyethyl)-2-(5-acryloxy)hexyloxyethyl-isocyanurate.
Claim 2
Dependent Claim
139 words
A radiation-curable adhesive tape, having a ratio of 50% modulus (20° C.) to 25% modulus (20° C.) of at least 1.2 with the 25% modulus (20° C.) being 60 kg/cm 2 or less, which tape comprises a radiation transmitting substrate comprising at least two kinds of resin layers and being composed of a multi-layer film having at least three layers including an intermediate layer having rubber-like properties and being selected from a soft poly(vinyl chloride) resin layer or an elastomer, and a radiation-curable adhesive layer comprising an acrylic adhesive formed on one side of the substrate containing 5 to 500 parts by weight of an isocyanurate compound per 100 parts by weight of the acrylic adhesive; the isocyanurate compound being selected from the group consisting of: tris (acryloxyethyl) isocyanurate, tris (methacryloxyethyl) isocyanurate, tris-4-acryloxy-n-butylisocyanurate, tris(1,3-diacryloxy-2-propyloxycarbonylamine-n-hexyl) isocyanurate, tris(1-acryloxy-3-methacryloxy-2-propyloxycarbonylamino-n-hexyl) isocyanurate and bis(2-acryloxyethyl)-2-(5-acryloxy)hexyloxyethyl-isocyanurate.
Claim 3
Dependent Claim
23 words
The radiation-curable adhesive tape as claimed in claim 1, wherein the intermediate layer having rubber-like properties is a soft poly(vinyl chloride) resin layer.
Claim 4
Dependent Claim
20 words
The radiation-curable adhesive tape as claimed in claim 1, wherein the intermediate layer having rubber-like properties is an elastomer layer.
Claim 5
Dependent Claim
42 words
The radiation-curable adhesive tape as claimed in claim 1, wherein an outer layer of the multi-layer film is composed of a resin selected from polyethylene, ethylene/propylene copolymer, polypropylene, ethylene/vinyl acetate copolymer, polymethylpentene, ethylene/ethyl acrylate copolymer, ethylene/methyl acrylate copolymer, and ethylene/acrylic acid copolymer.
Claim 6
Dependent Claim
24 words
The radiation-curable adhesive tape as claimed in claim 1, wherein an outer layer of the multi-layer film is composed of a ethylene/vinyl acetate copolymer.
Claim 7
Dependent Claim
18 words
The radiation-curable adhesive tape as claimed in claim 1, wherein the tape is expanded during its intended use.
Claim 8
Dependent Claim
35 words
The radiation-curable adhesive tape as claimed in claim 1, wherein the radiation-curable adhesive layer further comprises 0.01 to 20 parts by weight of a silicone acrylate compound for 100 parts by weight of acrylic adhesive.
Claim 9
Dependent Claim
30 words
The radiation-curable adhesive tape as claimed in claim 1, wherein the radiation-curable adhesive layer comprises 60-150 parts by weight of isocyanurate compounds for 100 parts by weight of acrylic adhesive.
Claim 10
Dependent Claim
34 words
The radiation-curable adhesive tape as claimed in claim 1, wherein the radiation-curable adhesive layer further comprises 0.5 to 4 parts by weight of silicone acrylate compound for 100 parts by weight of acrylic adhesive.
Claim 11
Dependent Claim
20 words
The radiation-curable adhesive tape as claimed in claim 1, which further comprises a separator film on the radiation-curable adhesive layer.
Claim 12
Dependent Claim
17 words
The radiation-curable adhesive tape as claimed in claim 1, wherein the tape is radiation-curable with ultraviolet radiation.
Claim 13
Dependent Claim
138 words
The radiation-curable adhesive tape, having a ratio of 50% modulus (20° C.) to 25% modulus (20° C.) of at least 1.2 with the 25% modulus (20° C.) being 50-60 kg/cm 2 , which tape comprises a radiation transmitting substrate comprising at least two kinds of resin layers and being composed of a multi-layer film having at least three layers including an intermediate layer having rubber-like properties and being selected from a soft poly(vinyl chloride) resin layer of an elastomer, and a radiation-curable adhesive layer comprising an acrylic adhesive formed on one side of the substrate containing 5 to 500 parts by weight of an isocyanurate compound per 100 parts by weight of the acrylic adhesive; the isocyanurate compound being selected from the group consisting of: tris (acryloxyethyl) isocyanurate, tris (methacryloxyethyl) isocyanurate, tris-4-acryloxy-n-butylisocyanurate, tris(1,3-diacryloxy-2-propyloxycarbonylamine-n-hexyl) isocyanurate, tris(1-acryloxy-3-methacryloxy-2-propyloxycarbonylamino-n-hexyl) isocyanurate and bis(2-acryloxyethyl)-2-(5-acryloxy)hexyloxyethyl-isocyanurate.
Claim 14
Dependent Claim
138 words
The radiation-curable adhesive tape, having a ratio of 50% modulus (20° C.) to 25% modulus (20° C.) of at least 1.2 with the 25% modulus (20° C.) being 50-60 kg/cm 2 , which tape comprises a radiation transmitting substrate comprising at least two kinds of resin layers and being composed of a multi-layer film having at least three layers including an intermediate layer having rubber-like properties and being selected from a soft poly(vinyl chloride) resin layer of an elastomer, and a radiation-curable adhesive layer comprising an acrylic adhesive formed on one side of the substrate containing 5 to 500 parts by weight of an isocyanurate compound per 100 parts by weight of the acrylic adhesive; the isocyanurate compound being selected from the group consisting of: tris (acryloxyethyl) isocyanurate, tris (methacryloxyethyl) isocyanurate, tris-4-acryloxy-n-butylisocyanurate, tris(1,3-diacryloxy-2-propyloxycarbonylamine-n-hexyl) isocyanurate, tris(1-acryloxy-3-methacryloxy-2-propyloxycarbonylamino-n-hexyl) isocyanurate and bis(2-acryloxyethyl)-2-(5-acryloxy)hexyloxyethyl-isocyanurate.
Claim 15
Dependent Claim
23 words
The radiation-curable adhesive tape as claimed in claim 12, wherein the intermediate layer having rubber-like properties is a soft poly(vinyl chloride) resin layer.
Claim 16
Dependent Claim
20 words
The radiation-curable adhesive tape as claimed in claim 12, wherein the intermediate layer having rubber-like properties is an elastomer layer.
Claim 17
Dependent Claim
42 words
The radiation-curable adhesive tape as claimed in claim 12, wherein an outer layer of the multi-layer film is composed of a resin selected from polyethylene, ethylene/propylene copolymer, polypropylene, ethylene/vinyl acetate copolymer, polymethylpentene, ethylene/ethyl acrylate copolymer, ethylene/methyl acrylate copolymer, and ethylene/acrylic acid copolymer.
Claim 18
Dependent Claim
24 words
The radiation-curable adhesive tape as claimed in claim 12, wherein an outer layer of the multi-layer film is composed of a ethylene/vinyl acetate copolymer.
Claim 19
Dependent Claim
18 words
The radiation-curable adhesive tape as claimed in claim 12, wherein the tape is expanded during its intended use.
Claim 20
Dependent Claim
36 words
The radiation-curable adhesive tape as claimed in claim 12, wherein the radiation curable adhesive layer further comprises 0.01 to 20 parts by weight of a silicone acrylate compound for 100 parts by weight of acrylic adhesive.
Claim 21
Dependent Claim
30 words
The radiation-curable adhesive tape as claimed in claim 12, wherein the radiation-curable adhesive layer comprises 60-150 parts by weight of isocyanurate compounds for 100 parts by weight of acrylic adhesive.
Claim 22
Dependent Claim
35 words
The radiation-curable adhesive tape as claimed in claim 12, wherein the radiation curable adhesive layer further comprises 0.5 to 4 parts by weight of silicone acrylate compound for 100 parts by weight of acrylic adhesive.
Claim 23
Dependent Claim
20 words
The radiation-curable adhesive tape as claimed in claim 12, which further comprises a separator film on the radiation-curable adhesive layer.
Claim 24
Dependent Claim
17 words
The radiation-curable adhesive tape as claimed in claim 12, wherein the tape is radiation-curable with ultraviolet radiation.
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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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |