US5281473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 22:00
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.
References Cited (Backward Citations)
US4485226A
Cited
JPS604579A
Cited
JPS60196956A
Cited
EP0157508A2
Cited
JPS60201642A
Cited
JPS6128572A
Cited
DE3501726A1
Cited
US4640727A
Cited
EP0194706A1
Cited
EP0191534A1
Cited
JPS6210180A
Cited
JPS6259684A
Cited
US4773920B1
Cited
US4773920A
Cited
US4756968A
Cited
US4965127A
Cited
US5187007A
Cited
GB2184741A
Cited
JPS6327580A
Cited
US4999242A
Cited
US5149586A
Cited
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 |