Patent US6670017B2 successfully refreshed from Google Patents.
US6670017B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocurable form-in-place gasket for electronic applications
Assignee: 3M Innovative Properties Co
•
Filing: 2001-09-04
•
Granted: 2003-12-30
•
Expires: 2021-09-04
Abstract
Abstract Photocurable compositions and process for providing form-in-place gaskets using automated placement followed by photocuring of a pattern of a non-silicone composition comprising a liquid polyolefin oligomer, a reactive diluent, and a curative. The form-in-place gasket, after curing, has a level of total outgassing components of about 10 μg/g to about 45 μg/g. The curative responds to actinic radiation and heat, and may contain a photoinitiator. Optionally a photocurable, form-in-place gasket according to the present invention further comprises a thixotropic filler in an amount from about 8.0 wt. % to about 12.0 wt. %, and preferably comprises a fumed silica.
Inventors
- 👤 Mitchell Huang
- 👤 Michael A. Kropp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:00
CPC Classifications
C; C08; C08F; C08F8/00; B; B29; B29C; B29C67/00; B29C67/24; B29C67/246; C08L; C08L63/00; C08L63/08; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/102; F16J15/14; B29K; B29K2063/00; B29L; B29L2031/00; B29L2031/26; B29L2031/265; Y; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/215; Y10T428/31504; Y10T428/31511; Y10T428/31515
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
47 words
A form-in-place gasket produced using automated placement followed by photocuring of a pattern of a thixotropic non-silicone composition comprising: a liquid polyolefin oligomer; a reactive diluent; and a curative, said form-in-place gasket, after curing, having level of outgassing components of about 10 μg/g to about 45 μg/g.
Claim 2
Dependent Claim
47 words
A form-in-place gasket produced using automated placement followed by photocuring of a pattern of a thixotropic non-silicone composition comprising: a liquid polyolefin oligomer; a reactive diluent; and a curative, said form-in-place gasket, after curing, having level of outgassing components of about 10 μg/g to about 45 μg/g.
Claim 3
Dependent Claim
15 words
A form-in-place gasket according to claim 1 , wherein said curative responds to actinic radiation.
Claim 4
Dependent Claim
13 words
A form-in-place gasket according to claim 1 , further comprising a thixotropic filler.
Claim 5
Dependent Claim
22 words
A form-in-place gasket according to claim 3 , comprising about 8.0 wt. % to about 12.0 wt. % of said thixotropic filler.
Claim 6
Dependent Claim
16 words
A form-in-place gasket according to claim 4 , wherein said thixotropic filler is a fumed silica.
Claim 7
Dependent Claim
23 words
A form-in-place gasket according to claim 1 , wherein said level of outgassing components is from about 20 μg/g to about 35 μg/g.
Claim 8
Dependent Claim
23 words
A form-in-place gasket according to claim 1 , comprising about 50 wt. % to about 65 wt. % of said liquid polyolefin oligomer.
Claim 9
Dependent Claim
22 words
A form-in-place gasket according to claim 1 , comprising about 7.5 wt. % to about 15 wt. % of said reactive diluent.
Claim 10
Dependent Claim
37 words
A photocurable, non-silicone composition for form-in-place gaskets comprising: a liquid polyolefin oligomer; a reactive diluent; and a curative, said non-silicone composition, after curing, having a level of outgassing components of about 10 μg/g to about 45 μg/g.
Claim 11
Dependent Claim
37 words
A photocurable, non-silicone composition for form-in-place gaskets comprising: a liquid polyolefin oligomer; a reactive diluent; and a curative, said non-silicone composition, after curing, having a level of outgassing components of about 10 μg/g to about 45 μg/g.
Claim 12
Dependent Claim
16 words
A photocurable, non-silicone composition according to claim 9 , wherein said curative responds to actinic radiation.
Claim 13
Dependent Claim
24 words
A photocurable, non-silicone composition according to claim 9 , comprising about 50 wt. % to about 65 wt. % of said liquid polyolefin oligomer.
Claim 14
Dependent Claim
24 words
A photocurable, non-silicone composition according to claim 9 , further comprising about 7.5 wt. % to about 15 wt. % of said reactive diluent.
Claim 15
Dependent Claim
23 words
A photocurable, non-silicone composition according to claim 9 , comprising about 8.0 wt. % to about 12.0 wt. % of a thixotropic filler.
Claim 16
Dependent Claim
18 words
A photocurable, non-silicone composition according to claim 9 , having a flowability from about 0.25 to about 0.5.
Claim 17
Dependent Claim
91 words
A process for forming a cured form-in-place gasket having a total level of outgassing components of about 10 μg/g to about 45 μg/g, said process comprising the steps of: providing a photocurable, non-silicone composition comprising a liquid polyolefin oligomer, a reactive diluent and a curative responsive to actinic radiation; dispensing said photocurable composition as a form-in-place gasket bead; exposing said gasket bead to actinic radiation; and heating said gasket bead to a temperature to cure said gasket bead and substantially displace any volatile components therefrom to produce said cured form-in-place gasket.
Claim 18
Dependent Claim
91 words
A process for forming a cured form-in-place gasket having a total level of outgassing components of about 10 μg/g to about 45 μg/g, said process comprising the steps of: providing a photocurable, non-silicone composition comprising a liquid polyolefin oligomer, a reactive diluent and a curative responsive to actinic radiation; dispensing said photocurable composition as a form-in-place gasket bead; exposing said gasket bead to actinic radiation; and heating said gasket bead to a temperature to cure said gasket bead and substantially displace any volatile components therefrom to produce said cured form-in-place gasket.
Claim 19
Dependent Claim
13 words
A process according to claim 15 , wherein said curative comprises a photoinitiator.
Claim 20
Dependent Claim
14 words
A process according to claim 15 , wherein said temperature is about 160° C.
Claim 21
Dependent Claim
17 words
A process according to claim 15 , wherein said photocurable non-silicone composition optionally comprises a thixotropic filler.
References Cited (Backward Citations)
FR2411688A2
Cited
US4643864A
Cited
US4643863A
Cited
EP0349248A2
Cited
EP0643551A1
Cited
EP0643552A1
Cited
WO1995028431A1
Cited
WO1996022672A1
Cited
US5641438A
Cited
US5679734A
Cited
US5776998A
Cited
US5684110A
Cited
JPH11100493A
Cited
US5985952A
Cited
EP0965572A1
Cited
WO2000039189A1
Cited
WO2000040636A1
Cited
WO2001081494A2
Cited
US6346330B1
Cited
WO2002048584A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-12-29 | 2007-06-30 | 2007-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-12-29 | 2011-06-30 | 2011-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-12-29 | 2015-06-30 | 2015-12-30 | $7700.00 | Window Closed / Lapsed |