Method for improving tracking resistance of thermoplastic resin
AssigneePolyplastics Co., Ltd.
InventorsItsuki Saito, Yoshihiro Asai, Kazuya Goshima
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Abstract
A method for improving the comparative tracking index of a thermoplastic resin, as measured in compliance with IEC60112, 3rd edition, is disclosed by blending a carbodiimide compound in the thermoplastic resin; use of a carbodiimide compound for improving the comparative tracking index of a thermoplastic resin, as measured in compliance with IEC60112, 3rd edition; and a tracking resistance improving agent for a thermoplastic resin, for improving the comparative tracking index of the thermoplastic resin, as measured in compliance with IEC60112, 3rd edition. The carbodiimide compound is preferably used at a ratio of 0.01 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin.
Claims12
A method for improving the comparative tracking index (CTI) of a thermoplastic resin, as measured subsequently after a molding is prepared in compliance with IEC60112, 3rd edition, by blending a carbodiimide compound in the thermoplastic resin, wherein
- the improving the comparative tracking index is (i) or (ii) below:
- (i) improving from a CTI that is less than 500 V before the addition of a carbodiimide compound to a CTI that is 500 V or more after the addition of a carbodiimide compound, or
- (ii) the ratio [(CTI-2)/(CTI-1]] of CTI (CTI-1) before the addition of a carbodiimide compound and the CTI (CTI-2) after the addition of a carbodiimide compound is 1.15 or more;
- and
- the thermoplastic resin has one or more functional groups selected from a carboxy group, a hydroxy group, and an amino group.
A tracking resistance improving agent for a thermoplastic resin, for improving the comparative tracking index (CTI) of a thermoplastic resin, as measured subsequently after a molding is prepared in compliance with IEC60112, 3rd edition, the tracking resistance improving agent comprising a carbodiimide compound, wherein
- the improving the comparative tracking index is (i) or (ii) below:
- (i) improving from a CTI that is less than 500 V before the addition of a carbodiimide compound to a CTI that is 500 V or more after the addition of a carbodiimide compound, or
- (ii) the ratio [(CTI-2)/(CTI-1]] of CTI (CTI-1) before the addition of a carbodiimide compound and the CTI (CTI-2) after the addition of a carbodiimide compound is 1.15 or more;
- and
- the thermoplastic resin has one or more functional groups selected from a carboxy group, a hydroxy group, and an amino group.
Dependencies are inferred from the claim text.