Toner resin and preparation method thereof

Abstract

The present invention discloses a toner resin, which is prepared by mixing a high molecular weight epoxy resin and a xylene saturated polyester in any proportion; the preparation process is as follows: (1) preparing a high molecular weight epoxy resin; (2) preparing a xylene saturated polyester while carrying out step (1); (3) physically mixing the prepared high molecular weight epoxy resin and the xylene saturated polyester. The present invention provides a toner resin prepared by mixing a high molecular weight epoxy resin and a xylene saturated polyester in any proportion, so as to achieve the purpose of improving the production quality of the toner resin and meeting the requirements of low temperature fixing.

Description

Technical Field

[0001] The invention relates to the field of toner resin production and manufacturing, and in particular to a toner resin and a preparation method thereof. Background Art

[0002] Today's printing and copying requirements are getting higher and higher, and they need to meet the requirements of low-temperature fixing. Existing resins cannot perfectly meet this requirement.

[0003] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a toner resin and a preparation method thereof, so as to achieve the purpose of improving the production quality of the toner resin and meeting the requirements of low-temperature fixing.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A toner resin is prepared by mixing high molecular weight epoxy resin and xylene saturated polyester in any proportion.

[0007] The invention provides a toner resin prepared by mixing a high molecular weight epoxy resin and a xylene saturated polyester in any proportion, so as to achieve the purpose of improving the production quality of the toner resin and meeting the requirements of low-temperature fixing.

[0008] Preferably, the components of the high molecular weight epoxy resin are as follows:

[0009] Epoxy resin 60-80 parts;

[0010] Bisphenol A 20-40 parts;

[0011] Catalyst 0.1-1 part;

[0012] 1-10 parts of monoacid.

[0013] Preferably, the monoacid is one or more of cycloalkane acid, butyric acid, stearic acid, benzoic acid, and p-tert-butylbenzoic acid mixed in any proportion.

[0014] Preferably, the epoxy equivalent of the epoxy resin is 184-190 g / eq.

[0015] Preferably, the catalyst is triphenylphosphine.

[0016] Preferably, the components of the xylene saturated polyester are as follows:

[0017] 60-80 parts of xylene formaldehyde resin;

[0018] 20-40 parts of dibasic acid;

[0019] Neopentyl glycol 5-10 parts;

[0020] 0.1-5 parts of p-aminobenzenesulfonic acid.

[0021] Preferably, the dibasic acid is one or more of terephthalic acid, isophthalic acid and adipic acid mixed in any proportion.

[0022] A toner resin preparation process, the preparation process is as follows:

[0023] (1) Preparation of high molecular weight epoxy resin;

[0024] (2) preparing xylene saturated polyester simultaneously with step (1);

[0025] (3) Physically mix the prepared high molecular weight epoxy resin and xylene saturated polyester.

[0026] Preferably, step (1) is as follows:

[0027] (1-1), adding epoxy resin and bisphenol A into a reaction kettle according to the proportion;

[0028] (1-2) Add a catalyst into the reactor and continuously increase the temperature in the reactor to 110-120°C;

[0029] (1-3) Continue to raise the temperature in the reactor until it reaches 177°C-193°C and maintain it;

[0030] (1-4) After a period of sufficient reaction, a monobasic acid is added to the reactor for further esterification;

[0031] (1-5) Complete the preparation of high molecular weight cyclic resin.

[0032] Preferably, step (2) is as follows:

[0033] (2-1), weigh an appropriate amount of xylene formaldehyde resin and an appropriate amount of dibasic acid, and put them into a reaction kettle according to the proportion;

[0034] (2-2), stirring the raw materials in the reaction kettle, adding an appropriate amount of p-aminobenzenesulfonic acid during the stirring process, and continuing to stir;

[0035] (2-3), after the solution in step (2-2) changes color, add neopentyl glycol;

[0036] (2-4), heating the reactor in step (2-3) to 110°C and refluxing, and when the viscosity increases to a certain extent, adding the later xylene formaldehyde resin to react;

[0037] (2-5) When the acid value of the solution is less than 1, cool down and discharge the material;

[0038] (2-6) Complete the preparation of xylene saturated polyester.

[0039] The present invention has the following advantages:

[0040] 1. The present invention provides a toner resin prepared by mixing a high molecular weight epoxy resin and a xylene saturated polyester in any proportion, thereby achieving the purpose of improving the production quality of the toner resin and meeting the requirements of low-temperature fixing. DETAILED DESCRIPTION

[0041] The present invention provides a toner resin and a preparation method thereof. The working principle is to prepare the toner resin by mixing a high molecular weight epoxy resin and a xylene saturated polyester in any proportion, and combining the corresponding preparation process to achieve the purpose of improving the production quality of the toner resin and meeting the requirements of low-temperature fixing.

[0042] The present invention is further described in detail below with reference to examples and specific implementation modes.

[0043] A toner resin is prepared by mixing a high molecular weight epoxy resin and a xylene saturated polyester in any proportion;

[0044] in:

[0045] The components of the high molecular weight epoxy resin are as follows:

[0046] Epoxy resin 60-80 parts;

[0047] Bisphenol A 20-40 parts;

[0048] Catalyst 0.1-1 part;

[0049] 1-10 parts of monoacid;

[0050] The components of the xylene saturated polyester are as follows:

[0051] 60-80 parts of xylene formaldehyde resin;

[0052] 20-40 parts of dibasic acid;

[0053] Neopentyl glycol 5-10 parts;

[0054] 0.1-5 parts of p-aminobenzenesulfonic acid.

[0055] A toner resin preparation process, the preparation process is as follows:

[0056] (1) Preparation of high molecular weight epoxy resin;

[0057] (1-1), adding epoxy resin and bisphenol A into a reaction kettle according to the proportion;

[0058] (1-2) Add a catalyst into the reactor and continuously increase the temperature in the reactor to 110-120°C;

[0059] (1-3) Continue to raise the temperature in the reactor until it reaches 177°C-193°C and maintain it;

[0060] (1-4) After a period of sufficient reaction, a monobasic acid is added to the reactor for further esterification;

[0061] (1-5), completing the preparation of high molecular weight cyclic resin;

[0062] (2) preparing xylene saturated polyester simultaneously with step (1);

[0063] (2-1), weigh an appropriate amount of xylene formaldehyde resin and an appropriate amount of dibasic acid, and put them into a reaction kettle according to the proportion;

[0064] (2-2), stirring the raw materials in the reaction kettle, adding an appropriate amount of p-aminobenzenesulfonic acid during the stirring process, and continuing to stir;

[0065] (2-3), after the solution in step (2-2) changes color, add neopentyl glycol;

[0066] (2-4), heating the reactor in step (2-3) to 110°C and refluxing, and when the viscosity increases to a certain extent, adding the later xylene formaldehyde resin to react;

[0067] (2-5) When the acid value of the solution is less than 1, cool down and discharge the material;

[0068] (2-6), completing the preparation of xylene saturated polyester;

[0069] (3) Physically mix the prepared high molecular weight epoxy resin and xylene saturated polyester.

[0070] The specific use steps of the present invention are as follows:

[0071] Embodiment 1:

[0072] A toner resin is physically mixed with a high molecular weight epoxy resin and a xylene saturated polyester in a weight ratio of 2:8;

[0073] in:

[0074] The components of the high molecular weight epoxy resin are as follows:

[0075] Epoxy resin 60 parts;

[0076] Bisphenol A 20 parts;

[0077] 0.1 part of triphenylphosphine;

[0078] 9.9 parts of cyclohexane acid;

[0079] The components of the xylene saturated polyester are as follows:

[0080] 60 parts of xylene formaldehyde resin;

[0081] 20 parts of terephthalic acid;

[0082] Neopentyl glycol 5 parts;

[0083] 5 parts of p-aminobenzenesulfonic acid.

[0084] A toner resin preparation process, the preparation process is as follows:

[0085] (1) Preparation of high molecular weight epoxy resin;

[0086] (1-1), adding epoxy resin and bisphenol A into a reaction kettle according to the proportion;

[0087] (1-2) Add a catalyst into the reactor and continuously increase the temperature in the reactor to 110-120°C;

[0088] (1-3) Continue to raise the temperature in the reactor until it reaches 177°C-193°C and maintain it;

[0089] (1-4) After a period of sufficient reaction, cyclohexane acid is added to the reactor for further esterification;

[0090] (1-5), completing the preparation of high molecular weight cyclic resin;

[0091] (2) preparing xylene saturated polyester simultaneously with step (1);

[0092] (2-1), weigh an appropriate amount of xylene formaldehyde resin and an appropriate amount of terephthalic acid, and put them into a reaction kettle according to the proportion;

[0093] (2-2), stirring the raw materials in the reaction kettle, adding an appropriate amount of p-aminobenzenesulfonic acid during the stirring process, and continuing to stir;

[0094] (2-3), after the solution in step (2-2) changes color, add neopentyl glycol;

[0095] (2-4), heating the reactor in step (2-3) to 110°C and refluxing, and when the viscosity increases to a certain extent, adding the later xylene formaldehyde resin to react;

[0096] (2-5) When the acid value of the solution is less than 1, cool down and discharge the material;

[0097] (2-6), completing the preparation of xylene saturated polyester;

[0098] (3) Physically mix the prepared high molecular weight epoxy resin and xylene saturated polyester.

[0099] Embodiment 2:

[0100] A toner resin is physically mixed with a high molecular weight epoxy resin and a xylene saturated polyester in a weight ratio of 3:7;

[0101] in:

[0102] The components of the high molecular weight epoxy resin are as follows:

[0103] Epoxy resin 78.9 parts;

[0104] Bisphenol A 20 parts;

[0105] 0.1 part of triphenylphosphine;

[0106] 1 part of cyclohexane acid;

[0107] The components of the xylene saturated polyester are as follows:

[0108] 70 parts of xylene formaldehyde resin;

[0109] Adipic acid 20 parts;

[0110] 5 parts of neopentyl glycol;

[0111] 5 parts of p-aminobenzenesulfonic acid.

[0112] Embodiment three:

[0113] A toner resin is physically mixed with a high molecular weight epoxy resin and a xylene saturated polyester in a weight ratio of 6:4;

[0114] in:

[0115] The components of the high molecular weight epoxy resin are as follows:

[0116] Epoxy resin 70 parts;

[0117] Bisphenol A 25 parts;

[0118] 1 part of triphenylphosphine;

[0119] 4 parts of cyclohexane acid;

[0120] The components of the xylene saturated polyester are as follows:

[0121] 70 parts of xylene formaldehyde resin;

[0122] 24 parts of isophthalic acid;

[0123] Neopentyl glycol 5 parts;

[0124] 1 part of p-aminobenzenesulfonic acid.

[0125] Through the above manner, the toner resin and preparation method provided by the present invention achieve the purpose of improving the production quality of the toner resin and meeting the requirements of low-temperature fixing by mixing a high molecular weight epoxy resin and a xylene saturated polyester in any proportion to make the toner resin.

[0126] The above is only a preferred embodiment of a toner resin and a preparation method disclosed in the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A toner resin, characterized in that: It is made by mixing high molecular weight epoxy resin and xylene saturated polyester in any proportion; The components of the xylene saturated polyester are as follows: 60-80 parts of xylene formaldehyde resin; 20-40 parts of dibasic acid; Neopentyl glycol 5-10 parts; 0-5 parts of p-aminobenzenesulfonic acid.

2. A toner resin according to claim 1, characterized in that: The components of the high molecular weight epoxy resin are as follows: Epoxy resin 60-80 parts; Bisphenol A 20-40 parts; Catalyst 0.1-1 part; 1-10 parts of monoacid.

3. A toner resin according to claim 2, characterized in that: The monoacid is one or more of cycloalkane acid, butyric acid, stearic acid, benzoic acid and p-tert-butylbenzoic acid mixed in any proportion.

4. A toner resin according to claim 2, characterized in that: The epoxy equivalent of the epoxy resin is 184-190 g / eq.

5. A toner resin according to claim 2, characterized in that: The catalyst is triphenylphosphine.

6. A toner resin according to claim 1, characterized in that: The dibasic acid is one or more of terephthalic acid, isophthalic acid and adipic acid mixed in any proportion.

7. A toner resin according to claim 1, characterized in that: The preparation process is as follows: (1) Preparation of high molecular weight epoxy resin; (2) preparing xylene saturated polyester simultaneously with step (1); (3) Physically mix the prepared high molecular weight epoxy resin and xylene saturated polyester.

8. A toner resin according to claim 7, characterized in that: Step (1) is as follows: (1-1), adding epoxy resin and bisphenol A into a reaction kettle according to the proportion; (1-2) Add a catalyst into the reactor and continuously increase the temperature in the reactor to 110-120°C; (1-3) Continue to raise the temperature in the reactor until it reaches 177°C-193°C and maintain it; (1-4) After a period of sufficient reaction, a monobasic acid is added to the reactor for further esterification; (1-5) Complete the preparation of high molecular weight cyclic resin.

9. A toner resin according to claim 7, characterized in that: Step (2) is as follows: (2-1), weigh an appropriate amount of xylene formaldehyde resin and an appropriate amount of dibasic acid, and put them into a reaction kettle according to the proportion; (2-2), stirring the raw materials in the reaction kettle, adding an appropriate amount of p-aminobenzenesulfonic acid during the stirring process, and continuing to stir; (2-3), after the solution in step (2-2) changes color, add neopentyl glycol; (2-4), heating the reactor in step (2-3) to 110°C and refluxing, and when the viscosity increases to a certain extent, adding the later xylene formaldehyde resin to react; (2-5) When the acid value of the solution is less than 1, cool down and discharge the material; (2-6) Complete the preparation of xylene saturated polyester.