US4515931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyfunctional acrylate monomers and polymers thereof useful as capacitor dielectrics
Assignee: Spectrum Control Inc
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Filing: 1983-12-19
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Granted: 1985-05-07
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Expires: 2003-12-19
Abstract
Abstract Compositions comprising polyfunctional acrylate monomers of the formula ##STR1## wherein R 1 is an aliphatic or alicyclic radical having about 20-40 carbon atoms, R 2 is hydrogen or methyl, and n is from 2 to 4, at least about 40% of said monomers containing alicyclic R 1 moieties, may be polymerized to form polymers useful as dielectrics for capacitors. Illustrative polyfunctional acrylates are those prepared from a diol which is the reduction product of linoleic acid dimer, or from condensation products of fatty acids such as linoleic acid with such materials as acrylic acid.
Inventors
- 👤 Daniel R. Olson
- 👤 Timothy W. O'Donnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:06
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/447; C; C08; C08F; C08F22/00; C08F22/10; C08F22/1006; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
61 words
A composition comprising at least one polyfunctional acrylate having the formula ##STR7## wherein R 1 is an aliphatic or alicyclic radical having about 20-40 carbon atoms which contains from 0 up to about three non-conjugated olefinic linkages, R 2 is hydrogen or methyl, and n is from 2 to 4; at least about 40% of said polyfunctional acrylates containing alicyclic moieties.
Claim 2
Dependent Claim
61 words
A composition comprising at least one polyfunctional acrylate having the formula ##STR7## wherein R 1 is an aliphatic or alicyclic radical having about 20-40 carbon atoms which contains from 0 up to about three non-conjugated olefinic linkages, R 2 is hydrogen or methyl, and n is from 2 to 4; at least about 40% of said polyfunctional acrylates containing alicyclic moieties.
Claim 3
Dependent Claim
12 words
A polyfunctional acrylate according to claim 1 wherein R 2 is hydrogen.
Claim 4
Dependent Claim
40 words
A polyfunctional acrylate according to claim 2 wherein R 1 is derived from at least one polyhydroxy compound having the formula R 1 (OH) n which is prepared by reduction of at least one corresponding polycarboxylic acid or ester thereof.
Claim 5
Dependent Claim
15 words
A polyfunctional acrylate according to claim 3 wherein the polycarboxylic acid is linoleic acid dimer.
Claim 6
Dependent Claim
25 words
A polyfunctional acrylate according to claim 3 wherein the polyhydroxy compound has the formula ##STR8## wherein the broken line indicates a single or double bond.
Claim 7
Dependent Claim
10 words
An addition polymer of a composition according to claim 1.
Claim 8
Dependent Claim
28 words
A polymer according to claim 6 which is a homopolymer or a copolymer with at least one of acrylates of higher monohydroxy alcohols, higher monoepoxides, polyols and polyepoxides.
Claim 9
Dependent Claim
18 words
A polymer according to claim 7 in which all of the units are derived from said polyfunctional acrylates.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |