Temperature control material and temperature control method using the same

A temperature control material comprising:

• a temperature indicator containing a temperature indicating material, comprising:
• an electron donor color developing compound for developing a color;
• an electron acceptor compound for interacting with the electron donor color developing compound so as to develop color when an interaction between the electron donor color developing compound and the electron acceptor compound becomes large and fade color when the interaction becomes small;
• and
• a reversible compound for changing interaction between the electron donor color developing compound and the electron acceptor compound reversibly;
• wherein the temperature indicating material is initialized by quenching after heating over a melting point thereof so as to fade color,
• wherein the temperature indicating material becomes irreversible at outside temperature, and
• wherein the glass transition temperature of the temperature indicating material is set to a temperature higher than a control temperature as an expected temperature in the measurement environment.

A temperature control method comprising:

• the step of setting the glass transition temperature of a temperature indicator containing a temperature indicating material, comprising:
• an electron donor color developing compound for developing a color;
• an electron acceptor compound for interacting with the electron donor color developing compound so as to develop color when an interaction between the electron donor color developing compound and the electron acceptor compound becomes large and fade color when the interaction becomes small;
• and
• a reversible compound for changing interaction between the electron donor color developing compound and the electron acceptor compound reversibly;
• wherein the temperature indicating material is initialized by quenching after heating over a melting point thereof so as to fade color,
• wherein the temperature indicating material becomes irreversible at outside temperature, and
• wherein glass transition temperature of the temperature indicating material is set to a temperature higher than a control temperature as an expected temperature in the measurement environment;
• and
• the step of carrying out temperature control by irradiating the temperature indicator with light having a wavelength absorbed by a color developed by the temperature indicator and detecting the intensity of the reflected light or transmitted light.

A temperature control method comprising:

• the step of setting the glass transition temperature of a temperature indicator containing a temperature indicating material, comprising:
• an electron donor color developing compound for developing a color;
• an electron acceptor compound for interacting with the electron donor color developing compound so as to develop color when an interaction between the electron donor color developing compound and the electron acceptor compound becomes large and fade color when the interaction becomes small;
• a reversible compound for changing interaction between the electron donor color developing compound and the electron acceptor compound reversibly;
• and
• a binder resin,
• wherein the temperature indicating material is initialized by quenching after heating over a melting point thereof so as to fade color,
• wherein the temperature indicating material becomes irreversible at outside temperature, and
• wherein the glass transition temperature of the temperature indicating material is set to a temperature higher than a control temperature as an expected temperature in the measurement environment;
• and
• the step of carrying out temperature control by irradiating the temperature indicator with light having a wavelength absorbed by a color developed by the temperature indicator and detecting the intensity of the reflected light or transmitted light.

A temperature control method comprising:

• the step of setting the glass transition temperature of a temperature indicator containing a temperature indicating material, comprising:
• an electron donor color developing compound for developing a color;
• an electron acceptor compound for interacting with the electron donor color developing compound so as to develop color when an interaction between the electron donor color developing compound and the electron acceptor compound becomes large and fade color when the interaction becomes small;
• and
• a reversible compound for changing interaction between the electron donor color developing compound and the electron acceptor compound reversibly;
• wherein the temperature indicating material is initialized by quenching after heating over a melting point thereof so as to fade color,
• wherein the temperature indicating material becomes irreversible at outside temperature, and
• wherein the glass transition temperature of the temperature indicating material is set to a temperature higher than a control temperature as an expected temperature in the measurement environment;
• the step of carrying out temperature control by irradiating the temperature indicator with light having a wavelength absorbed by a color developed by the temperature indicator and detecting the intensity of the reflected light or transmitted light;
• and
• the step of giving an alarm that the temperature indicator is exposed to a temperature higher than its glass transition temperature by the color development of the temperature indicator in a shorter time than the time for temperature control.