Patent US5171479A successfully refreshed from Google Patents.
US5171479A
Expired / Lapsed
US
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Antistatic and ionically conductive resin composition
Assignee: DKS Co Ltd
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Filing: 1991-04-25
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Granted: 1992-12-15
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Expires: 2011-04-25
Abstract
Abstract An antistatic and ionically conductive resin composition comprises: (A) 100 parts by weight of a resin, (B) 0.1 to 70 parts by weight of a high-molecular compound having an average molecular weight of not less than 10,000 prepared by reacting a polyoxyalkylene glycol with at least one of the polycarboxylic acids, polycarboxylic acid lower alkyl esters, polycarboxylic acid anhydrides and organic polyisocyanates, and (C) 0.1 to 30 parts by weight of an electrically conductive filler.
Inventors
- 👤 Hirohisa Maki
- 👤 Takeshi Fujita
- 👤 Katsuaki Matsuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:58
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08L; C08L101/00; H01B1/22; C08L2201/00; C08L2201/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
An antistatic and ionically conductive resin composition which comprises: (A) 100 parts by weight of a resin, (B) 0.1 to 70 parts by weight of a high-molecular compound having an average molecular weight of not less than 10,000 prepared by reacting a polyoxyalkylene glycol having an average molecular weight of not less than 100 and the alkylene of which has 2-4 C atoms with at least one member selected from the group consisting of polycarboxylic acid, polycarboxylic acid lower alkyl ester, polycarboxylic acid anhydride or organic polyisocyanate, the polycarboxylic acid being malonic acid, succinic acid, maleic acid, fumaric acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, itaconic acid, trimellitic acid or pyromellitic acid, the ester being monomethyl ester, dimethyl ester, monoethyl ester, diethyl ester, monopropyl ester, dipropyl ester, monobutyl ester or dibutyl ester, the organic polyisocyanate being tolylene diisocyanate, 4,4'-methylenebis(phenyl isocyanate), hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, 4,4'-methylenebis(cyclohexyl isocyanate), 4,4'-isopropylidenebis(cyclohexyl isocyanate) or trimethylhexamethylene diisocyanate and (C) 0.1 to 30 parts by weight of an electrically conductive filler.
Claim 2
Dependent Claim
170 words
An antistatic and ionically conductive resin composition which comprises: (A) 100 parts by weight of a resin, (B) 0.1 to 70 parts by weight of a high-molecular compound having an average molecular weight of not less than 10,000 prepared by reacting a polyoxyalkylene glycol having an average molecular weight of not less than 100 and the alkylene of which has 2-4 C atoms with at least one member selected from the group consisting of polycarboxylic acid, polycarboxylic acid lower alkyl ester, polycarboxylic acid anhydride or organic polyisocyanate, the polycarboxylic acid being malonic acid, succinic acid, maleic acid, fumaric acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, itaconic acid, trimellitic acid or pyromellitic acid, the ester being monomethyl ester, dimethyl ester, monoethyl ester, diethyl ester, monopropyl ester, dipropyl ester, monobutyl ester or dibutyl ester, the organic polyisocyanate being tolylene diisocyanate, 4,4'-methylenebis(phenyl isocyanate), hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, 4,4'-methylenebis(cyclohexyl isocyanate), 4,4'-isopropylidenebis(cyclohexyl isocyanate) or trimethylhexamethylene diisocyanate and (C) 0.1 to 30 parts by weight of an electrically conductive filler.
Claim 3
Dependent Claim
22 words
A composition according to claim 1, in which the proportion of the electrically conductive filler is 0.5 to 20 parts by weight.
Claim 4
Dependent Claim
22 words
A composition according to claim 1, in which the average molecular weight of the high-molecular compound is not less than about 80,000.
Claim 5
Dependent Claim
22 words
A composition according to claim 2, in which the average molecular weight of the high-molecular compound is not less than about 80,000.
Claim 6
Dependent Claim
21 words
A composition according to claim 3, in which the average molecular weight of the high-molecular compound is as high as 200,000.
Claim 7
Dependent Claim
21 words
A composition according to claim 4, in which the average molecular weight of the high-molecular compound is as high as 200,000.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-15 | 1996-06-15 | 1996-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-15 | 2000-06-15 | 2000-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-15 | 2004-06-15 | 2004-12-15 | $7700.00 | Window Closed / Lapsed |