US4747966A
Expired / Lapsed
US
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Electrically conductive thermoplastic resin and coating compositions
Assignee: Lion Corp
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Filing: 1986-09-30
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Granted: 1988-05-31
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Expires: 2006-09-30
Abstract
Abstract An electrically conductive thermoplastic resin and coating composition comprising a diphosphonic acid derivative having the formula: ##STR1## wherein R represents an alkyl or aryl group and M 1 to M 4 independently represent hydrogen or a cation. The electrically conductive thermoplastic resin composition has excellent electrical conductivity and retains the electrical conductivity for extended periods without using expensive noble metals. Furthermore, the electrically conductive coating composition provides an excellent electrical conductivity and shielding property retention without using expensive noble metals.
Inventors
- 👤 Seiji Maeno
- 👤 Hidetaka Ozaki
- 👤 Hisashi Yamada
- 👤 Osamu Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:23
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
147 words
An electrically conductive thermoplastic resin composition comprising: (i) at least one thermoplastic resin selected from the group consisting of low-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, polystyrene, ethylene-vinyl acetate copolymer, ABS resin, MMA resin, ethylene-acrylate copolymer, polyamide resin, and polyester resin; (ii) at least one metallic powder selected from the group consisting of nickel, copper, iron, and aluminum, and the alloys thereof; and (iii) 0.5 to 9 parts by weight, based on 100 parts by weight of the metallic powder, of diphosphonic acid having the general formula: ##STR4## wherein R represents an alkyl group having 1 to 18 carbon atoms, a phenyl group, or an alkylphenyl group having an alkyl group with 1 to 8 carbon atoms and M 1 to M 4 independently represent hydrogen or a cation; the weight ratio of the component (i) to the component (ii) (i.e., (i)/(ii)) being 40/60 to 6/94.
Claim 2
Dependent Claim
147 words
An electrically conductive thermoplastic resin composition comprising: (i) at least one thermoplastic resin selected from the group consisting of low-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, polystyrene, ethylene-vinyl acetate copolymer, ABS resin, MMA resin, ethylene-acrylate copolymer, polyamide resin, and polyester resin; (ii) at least one metallic powder selected from the group consisting of nickel, copper, iron, and aluminum, and the alloys thereof; and (iii) 0.5 to 9 parts by weight, based on 100 parts by weight of the metallic powder, of diphosphonic acid having the general formula: ##STR4## wherein R represents an alkyl group having 1 to 18 carbon atoms, a phenyl group, or an alkylphenyl group having an alkyl group with 1 to 8 carbon atoms and M 1 to M 4 independently represent hydrogen or a cation; the weight ratio of the component (i) to the component (ii) (i.e., (i)/(ii)) being 40/60 to 6/94.
Claim 3
Dependent Claim
73 words
An electrically conductive thermoplastic resin composition as claimed in claim 1, wherein the diphosphonic acid is 1-hydroxyethane-1,1-diphosphonic acid (HEDP), disodium 1-hydroxyethane-1,1-diphosphonate (HEDP-2Na) calcium 1-hydroxyethane-1,1-diphosphonate (HEDP-Ca), diammonium 1-hydroxyethane-1,1-diphosphonate (HEDP-2NH 3 ), ditriethanol amine 1-hydroxyethane-1,1-diphosphonate (HEDP-2TEA), tetratriethanol amine 1-hydroxyethane-1,1-diphosphonate (HEDP-4TEA), dianiline 1-hydroxyethane-1,1-diphosphonate (HEDP-2NH 2 -Ph), di(2-ethyl)hexylamine 1-hydroxyethane-1,1-diphosphonate (HEDP-2EHA), tetra(2-ethyl)hexylamine 1-hydroxyethane-1,1-diphosphonate (HEDP-4EHA), 1-hydroxypropane-1,1-diphosphonic acid (HPDP), 1-hydroxydodecane-1,1-diphosphonic acid (HDDP), 1-hydroxyoctadecane-1,1-diphosphonic acid (HODP), 1-hydroxyphenylmethane-1,1-diphosphonic acid (HPhDP), 1-hydroxybutane-1,1-diphosphonic acid (HBDP), 1-hydroxyheptane-1,1-diphosphonic acid, 1-hydroxyhexane-1,1-diphosphonic acid, 1-hydroxy-1-(p-methyl)phenylmethane-1,1-diphosphonic acid, and 1-hydroxy-1-(p-ethyl)phenyl-methane-1,1-diphosphonic acid.
Claim 4
Dependent Claim
27 words
An electrically conductive thermoplastic resin composition as claimed in claim 1, wherein the thermoplastic resin is polypropylene, low-density polyethylene, ABS resin, polystyrene, polyamide resin, or polyester resin.
Claim 5
Dependent Claim
24 words
An electrically conductive thermoplastic resin composition as claimed in claim 1, wherein the metallic powder is nickel, copper, iron, aluminum, or an alloy thereof.
Claim 6
Dependent Claim
61 words
An electrically conductive coating composition comprising: (i) at least one metallic powder; (ii) at least one film-forming resin selected from the group consisting of thermoplastic resins and thermosetting resins; and (iii) at least one diphosphonic acid derivative having the formula: ##STR5## wherein R represents an alkyl or aryl group and M 1 to M 4 independently represent hydrogen or a cation.
Claim 7
Dependent Claim
61 words
An electrically conductive coating composition comprising: (i) at least one metallic powder; (ii) at least one film-forming resin selected from the group consisting of thermoplastic resins and thermosetting resins; and (iii) at least one diphosphonic acid derivative having the formula: ##STR5## wherein R represents an alkyl or aryl group and M 1 to M 4 independently represent hydrogen or a cation.
Claim 8
Dependent Claim
23 words
An electrically conductive coating composition as claimed in claim 5, wherein the metallic powder is nickel, copper, iron, aluminum, or an alloy thereof.
Claim 9
Dependent Claim
39 words
An electrically conductive coating composition as claimed in claim 5, wherein the resin is at least one thermoplastic resin selected from the group consisting of thermoplastic acrylic resins, vinyl resins, urethane resins, alkyd resins, polyester resins, and hydrocarbon resins.
Claim 10
Dependent Claim
40 words
An electrically conductive coating composition as claimed in claim 5, wherein the resin is at least one thermosetting resin selected from the group consisting of thermosetting acrylic resins, phenol resins, unsaturated polyester resins, epoxy resins, urethane resins, and alkyd resins.
Claim 11
Dependent Claim
43 words
An electrically conductive coating composition as claimed in claim 5, wherein R in the formula (I) represents an alkyl group having 1 to 18 carbon atoms, a phenyl group, or an alkylphenyl group having an alkyl group with 1 to 8 carbon atoms.
Claim 12
Dependent Claim
63 words
An electrically conductive coating composition as claimed in claim 5, wherein the diphosphonic acid derivative is at least one compound selected from the group consisting of 1-hydroxyethane-1,1-diphosphonic acid (HEDP), disodium 1-hydroxyethane-1, 1-diphosphonate (HEDP-2Na) calcium 1-hydroxyethane-1,1-diphosphonate (HEDP-Ca), diammonium 1-hydroxyethane-1,1-diphosphonate (HEDP-2NH 3 ), ditriethanol amine 1-hydroxyethane-1,1-diphosphonate (HEDP-2TEA), tetratriethanol amine 1-hydroxyethane-1,1-diphosphonate (HEDP-4TEA), dianiline 1-hydroxyethane-1,1-diphosphonate (HEDP-2NH 2 -Ph), 1-hydroxypropane-1,1-diphosphonic acid, 1-hydroxydodecane-1,1-diphosphonic acid, 1-hydroxyoctadecane-1,1-diphosphonic acid, and 1-hydroxyphenylmethane-1,1-diphoshonic acid.
Claim 13
Dependent Claim
45 words
An electrically conductive coating composition as claimed in claim 5, wherein the amount of the diphosphonic acid derivative is within the range of from 0.1 to 8.0 parts by weight based on 100 parts by weight of the metallic powder contained in the coating composition.
Claim 14
Dependent Claim
44 words
An electrically conductive coating composition as claimed in claim 5, wherein the amount of the metallic powder is within the range of from 35% to 94% by weight based on the total amount of the resin and the metallic powder in the coating composition.
Claim 15
Dependent Claim
18 words
An electrically conductive coating composition as claimed in claim 5, wherein the composition further contains a diluting solvent.
Claim 16
Dependent Claim
44 words
An electrically conductive coating composition as claimed in claim 13, wherein the solvent is at least one member selected from the group consisting of methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, butyl acetate, ethanol, buthanol, toluene, xylene, turpentine oil, butyl cellosolve, and carbitol.
Claim 17
Dependent Claim
43 words
An electrically conductive coating composition as claimed in claim 13, wherein the amount of the solvent is within the range of from 10 to 500 parts by weight based on 100 parts of the total amount of the metallic powder and the resin.
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) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |