Thermochromic color masterbatch
First Claim
1. A thermochromic color masterbatch for use in a thermoplastic resin comprising a wax having substantially homogeneously dispersed therein a thermochromic granular material, said thermochromic granular material being a mixture of a thermochromic composition comprising 2 to 20% by weight of an electron donating chromogen, 4 to 40% by weight of an electron acceptor, and an alcohol, ester, azomethine or amide solvent having a boiling point 150°
- C. or higher, with 10 to 40 parts by weight of a thermosetting resin per 100 parts by weight of said thermochromic composition, said thermochromic graular material being coated with about 5-30 parts by weight per 100 parts by weight of said thermochromic composition with a hydrophilic high-molecular weight substance coagulable by means of an acid, an alkaline electrolyte, a heavy metal, an aldehyde or a zwitterion;
said masterbatch containing 100-500 parts by weight of said wax per 100 parts by weight of said thermochromic granular material.
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Abstract
Disclosed is a thermochromic color masterbatch for use in a thermoplastic resin comprising a wax having substantially homogeneously dispersed therein a thermochromic granular material which is coated with a hydrophilic high-molecular weight substance, said thermochromic granular material being a mixture of a thermochromic composition comprising an electron-donating chromogen, an electron acceptor and a solvent with a thermosetting resin.
68 Citations
13 Claims
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1. A thermochromic color masterbatch for use in a thermoplastic resin comprising a wax having substantially homogeneously dispersed therein a thermochromic granular material, said thermochromic granular material being a mixture of a thermochromic composition comprising 2 to 20% by weight of an electron donating chromogen, 4 to 40% by weight of an electron acceptor, and an alcohol, ester, azomethine or amide solvent having a boiling point 150°
- C. or higher, with 10 to 40 parts by weight of a thermosetting resin per 100 parts by weight of said thermochromic composition, said thermochromic graular material being coated with about 5-30 parts by weight per 100 parts by weight of said thermochromic composition with a hydrophilic high-molecular weight substance coagulable by means of an acid, an alkaline electrolyte, a heavy metal, an aldehyde or a zwitterion;
said masterbatch containing 100-500 parts by weight of said wax per 100 parts by weight of said thermochromic granular material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- C. or higher, with 10 to 40 parts by weight of a thermosetting resin per 100 parts by weight of said thermochromic composition, said thermochromic graular material being coated with about 5-30 parts by weight per 100 parts by weight of said thermochromic composition with a hydrophilic high-molecular weight substance coagulable by means of an acid, an alkaline electrolyte, a heavy metal, an aldehyde or a zwitterion;
Specification