Claims
- 1. An electrically conductive coating composition for a primer or a surfacer part for a plastic article which comprises:
- (A) between 50 to 97 weight percent of a polyurethane resin having a mean molecular weight between about 2,000 to 10,000;
- (B) between 2 to 40 weight percent of a ring-openable spiro-ortho-ester having a spiro-ortho-esterification degree of between 250 to 500 g/eq, and an epoxy value of between 0 to 5.0 g/eq;
- (C) between 0.05 to 1 weight percent of a cellulose derivative which is at least one selected from the group consisting of cellulose acetate propionate, cellullose butylate, cellulose acetate propionate, cellulose acetate butylate, and cellulose nitrate;
- (D) between 0.05 to 1.0 weight percent of a hydroxy-containing fluoride or silicone based surfactant; and
- (E) an electrically conductive material in an effective amount to achieve a surface resistance value of less than 10.sup.13 .OMEGA.cm, said electrically conductive material being at least one selected from the group consisting of carbon, titanium oxide, zinc oxide, antimony trichloride, graphite, tertiary ammonium salt compounds, metal coated fillers, and metal powders.
- 2. A plastic molded article coated with the coating composition as defined in claim 1.
- 3. An electrically conductive coating composition for a plastic article which comprises:
- (A) between 50 to 97 weight percent of a polyurethane resin having a mean molecular weight between about 2,000 to 10,000;
- (B) between 2 to 40 weight percent of a ring-openable spiro-ortho-ester having a spiro-ortho-esterification degree of between 250 to 500 g/eq, and an epoxy value of between 0 to 5.0 g/eq;
- (C) between 0.05 to 1 weight percent of a cellulose derivative which is at least one selected from the group consisting of cellulose acetate propionate, cellullose butylate, cellulose acetate propionate, cellulose acetate butylate, and cellulose nitrate;
- (D) between 0.05 to 1.0 weight percent of a hydroxy-containing fluoride or silicone based surfactant; and
- (E) an electrically conductive material in an effective amount to achieve a surface resistance value of less than 10.sup.13 .OMEGA.cm.
- 4. A coated plastic article having a surface coating which comprises:
- (A) between 50 to 97 weight percent of a polyurethane resin having a mean molecular weight between about 2,000 to 10,000;
- (B) between 2 to 40 weight percent of a ring-openable spiro-ortho-ester having a spiro-ortho-esterification degree of between 250 to 500 g/eq, and an epoxy value of between 0 to 5.0 g/eq;
- (C) between 0.05 to 1 weight percent of a cellulose derivative which is at least one selected from the group consisting of cellulose acetate propionate, cellullose butylate, cellulose acetate propionate, cellulose acetate butylate, and cellulose nitrate;
- (D) between 0.05 to 1.0 weight percent of a hydroxy-containing fluoride or silicone based surfactant; and
- (E) an electrically conductive material in an effective amount to achieve a surface resistance value of less than 10.sup.13 .OMEGA.cm.
Priority Claims (1)
Number |
Date |
Country |
Kind |
62-197503 |
Aug 1987 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 07/226,244, filed July 29, 1988, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0085413 |
Aug 1983 |
EPX |
0255294 |
Feb 1988 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
226244 |
Jul 1988 |
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