Patent US4383515A successfully refreshed from Google Patents.
Patent US5620795A successfully refreshed from Google Patents.
US5620795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesives containing electrically conductive agents
Assignee: 3M Co
•
Filing: 1995-07-10
•
Granted: 1997-04-15
•
Expires: 2015-07-10
Abstract
Abstract Pressure sensitive adhesives and heat activatable adhesives that are the reaction product of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T g less than 0° C.; a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T g greater than 15° C.; 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T g greater than 15° C.; and an electrically conductive agent.
Inventors
- 👤 Christopher A. Haak
- 👤 Michael A. Kropp
- 👤 Greggory S. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:38
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/30; F16F9/306; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1806; C08F220/1808; C08F220/1811; C08F220/1812; C08K; C08K7/00; C08K7/16; C08K7/18; C08K9/00; C08K9/02; C09; C09J; C09J11/00; C09J11/02; C09J11/04; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C09J4/00; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C09J9/00; C09J9/02; C08L; C08L2666/00; C08L2666/54; C09J2301/00; C09J2301/30; C09J2301/302; C09J2301/40; C09J2301/416; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/321; H05K3/323; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2804; Y10T428/2848; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A tape comprising: (a) a layer of a composition consisting essentially of a pressure sensitive adhesive polymer and an electrically conductive agent, said pressure sensitive adhesive polymer consisting of the reaction product of: (i) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a Tg less than 0° C.; (ii) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a Tg greater than 15° C.; and (iii) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a Tg greater than 15° C., the relative amounts of said acrylic acid ester, said non-polar ethylenically unsaturated monomer, and said polar ethylenically unsaturated monomer being chosen such that the 90° peel adhesion of said reaction product to a polypropylene surface is at least 2 lbs/0.5 in. after a 72 hour dwell at room temperature as measured according to Test Procedure B-I; and (b) a tape substrate.
Claim 2
Dependent Claim
175 words
A tape comprising: (a) a layer of a composition consisting essentially of a pressure sensitive adhesive polymer and an electrically conductive agent, said pressure sensitive adhesive polymer consisting of the reaction product of: (i) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a Tg less than 0° C.; (ii) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a Tg greater than 15° C.; and (iii) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a Tg greater than 15° C., the relative amounts of said acrylic acid ester, said non-polar ethylenically unsaturated monomer, and said polar ethylenically unsaturated monomer being chosen such that the 90° peel adhesion of said reaction product to a polypropylene surface is at least 2 lbs/0.5 in. after a 72 hour dwell at room temperature as measured according to Test Procedure B-I; and (b) a tape substrate.
Claim 3
Dependent Claim
159 words
A tape comprising: (a) a layer of a composition consisting essentially of a heat-activatable adhesive polymer and an electrically conductive agent, said heat-activatable adhesive polymer consisting of the reaction product of: (i) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a Tg less than 0° C.; (ii) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a Tg greater than 15° C.; and (iii) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a Tg greater than 15° C., the relative amounts of said acrylic acid ester, said non-polar ethylenically unsaturated monomer, and said polar ethylenically unsaturated monomer being chosen such that said heat-activatable adhesive polymer is essentially non-tacky at 20° C. and has a Tg of 30° C. or greater; and (b) a tape substrate.
Claim 4
Dependent Claim
159 words
A tape comprising: (a) a layer of a composition consisting essentially of a heat-activatable adhesive polymer and an electrically conductive agent, said heat-activatable adhesive polymer consisting of the reaction product of: (i) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a Tg less than 0° C.; (ii) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a Tg greater than 15° C.; and (iii) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a Tg greater than 15° C., the relative amounts of said acrylic acid ester, said non-polar ethylenically unsaturated monomer, and said polar ethylenically unsaturated monomer being chosen such that said heat-activatable adhesive polymer is essentially non-tacky at 20° C. and has a Tg of 30° C. or greater; and (b) a tape substrate.
Claim 5
Dependent Claim
33 words
The tape of claim 2, wherein said tape substrate is a plastic film and wherein a plurality of electrically conductive areas overlay the plastic film and underlay and contact said heat activatable adhesive.
Claim 6
Dependent Claim
24 words
The tape of claim 2, wherein no electrically conductive particle has a diameter greater than the thickness of the layer of heat activatable adhesive.
References Cited (Backward Citations)
USRE24906E
Cited
US3312754A
Cited
US3340224A
Cited
US3406087A
Cited
US3475213A
Cited
US3491070A
Cited
US3514326A
Cited
US3740366A
Cited
US3762946A
Cited
US3922464A
Cited
US4098945A
Cited
US4113981A
Cited
US4181752A
Cited
US4092443A
Cited
US4252593A
Cited
US4127699A
Cited
US4552604A
Cited
US4199646A
Cited
US4731503A
Cited
US4243455A
Cited
US4223067A
Cited
US4243500A
Cited
US4247656A
Cited
US4303485A
Cited
US4421822A
Cited
US4329384A
Cited
US4330590A
Cited
US4391687A
Cited
US4418105A
Cited
US4335171A
Cited
US4364972A
Cited
US4379201A
Cited
US4673673A
Cited
US4447579A
Cited
US4425263A
Cited
US4880683A
Cited
US4415615A
Cited
US4590230A
Cited
US4503200A
Cited
US4418120A
Cited
US4404246A
Cited
US4568592A
Cited
US4522870A
Cited
US4513039A
Cited
US4599265A
Cited
US4606962A
Cited
US4619867A
Cited
US4731282A
Cited
US4557960A
Cited
US4612209A
Cited
US4619979A
Cited
US4546037A
Cited
US4548862A
Cited
US4640981A
Cited
US4680226A
Cited
US4729809A
Cited
US5284891A
Cited
US4673750A
Cited
US4659872A
Cited
US4666771A
Cited
US4780491A
Cited
US4618525A
Cited
US4612242A
Cited
US4731273A
Cited
US4751269A
Cited
US4710536A
Cited
US4749590A
Cited
US4701279A
Cited
US4645711A
Cited
US4699842A
Cited
US4740657A
Cited
US4737559A
Cited
US4693935A
Cited
EP0252717A2
Cited
US4818610A
Cited
US4748061A
Cited
US4895745A
Cited
US4814040A
Cited
EP0303430A1
Cited
US5028484A
Cited
US4950537A
Cited
US4988742A
Cited
US5086088A
Cited
US5156911A
Cited
US5164441A
Cited
US5013784A
Cited
US5155301A
Cited
US5122215A
Cited
US5130375A
Cited
US5106902A
Cited
US5141989A
Cited
US5024880A
Cited
US5278199A
Cited
EP0444354A2
Cited
US5102924A
Cited
US5147938A
Cited
US5087494A
Cited
US5308887A
Cited
US5275856A
Cited
US5262232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-14 | 2000-10-14 | 2001-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-14 | 2004-10-14 | 2005-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-14 | 2008-10-14 | 2009-04-15 | $7700.00 | Window Closed / Lapsed |