CN110819077A - Non-stick screw type fluorescent pigment for low-temperature injection molding and preparation method thereof - Google Patents
Non-stick screw type fluorescent pigment for low-temperature injection molding and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/123—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/127—Acids containing aromatic rings
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
- C08G63/48—Polyesters chemically modified by esterification by unsaturated higher fatty oils or their acids; by resin acids
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/006—Preparation of organic pigments
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1088—Heterocyclic compounds characterised by ligands containing oxygen as the only heteroatom
Abstract
The invention provides a non-stick screw type fluorescent pigment for low-temperature injection molding and a preparation method thereof, wherein the preparation method comprises the following steps: the main material comprises long-chain monoacid, dicarboxylic acid or anhydride and polyhydric alcohol, and the auxiliary material comprises an antioxidant, an acid catalyst, a lubricating additive and a fluorescent dye, wherein the main material comprises the following components in the raw materials: the mass ratio of the long-chain monoacid to the dicarboxylic acid or anhydride to the polyol is (30-40): (38-45): (19 to 32). The invention improves the compatibility of carrier resin and injection molding materials such as PP, PE and the like, simultaneously adds the lubricating additive, plays a role in avoiding pigment from aggregating on a screw, reduces the system temperature, protects the dye, and ensures that the prepared product has brighter color and higher color concentration.
Description
Technical Field
The invention relates to the technical field of fluorescent pigments, in particular to a non-stick screw type fluorescent pigment for low-temperature injection molding and a preparation method thereof.
Background
The fluorescent pigment for injection molding mainly comprises fluorescent dye and carrier resin. Fluorescent dyes are substances that can absorb a certain wavelength and emit other wavelengths; the carrier resin plays a role in helping the fluorescent dye to spread color and protecting the fluorescent dye, and in the field of low-temperature injection molding, the carrier resin is generally thermoplastic polyester and polyester-amide mixed system resin and is convenient to disperse into the resin. Patent CN103306142A describes a fluorescent pigment specially used for leather, which is prepared by reacting p-toluenesulfonamide, melamine, formaldehyde, polyurethane resin, etc. The fluorescent pigment has a high softening point and cannot be applied to the field of low-temperature injection molding. Patent CN109988293A describes a thermoplastic fluorescent pigment, which is a composite polyester-amide resin, prepared by reacting cyclohexane dicarboxylic acid, isophthalic acid, sebacic acid, isophorone diamine, cyclohexane dimethanol, cyclohexylamine, zinc oxide, etc., and has the disadvantages of high raw material cost, low content of long-chain sebacic acid for improving the screw adhesion, and no significant improvement on the screw adhesion of the resin. Patent CN109082139A describes a fluorescent pigment powder for oil phase system and its preparation method, the fluorescent pigment comprises the following components: long carbon chain fatty alcohol or long carbon chain fatty amine, cyanuric chloride, ammonia water, melamine, colorant, formaldehyde or paraformaldehyde. The system can be better compatible with base materials such as polyethylene, polypropylene and the like, but contains formaldehyde, so the system is not environment-friendly. Patent CN109054301A describes a fluorescent pigment for injection molding, which is prepared only by reacting aromatic carboxylic acid glycidyl ester, aliphatic amine and acid anhydride, and has low cost, but does not contain long carbon chains, so that the fluorescent pigment has poor compatibility with polypropylene, polyethylene and the like during injection molding and is easy to stick screws.
The polyester and polyester-amide mixed system resin in the prior art has the following defects: 1. because the affinity of the fluorescent pigment carrier resin and a screw is good, and the affinity with injection molding materials (polypropylene, polyethylene and the like) is poor, the most common problem in the fluorescent pigment injection molding process exists, namely screw adhesion, which not only causes unstable coloring of injection molding parts, but also causes that more serious pigment adhered to the screw can be agglomerated into plastic solution and can not be uniformly dispersed, so that undiffused pigment spots are presented on the surfaces of the injection molding parts, and meanwhile, the storage time is prolonged, and the bleeding condition is caused; 2. benzoic acid is basically added as an end capping agent in the production of polyester, polyester-amide and the like to control the molecular weight of the resin, but the benzoic acid is easy to volatilize, smells up when the fluorescent pigment is produced and used, and the reactivity of the benzoic acid is low, so that a large amount of benzoic acid monomer is contained in the pigment, the quality of the fluorescent pigment is poor, the screw sticking condition is increased, and the environment is not friendly. 3. The reaction temperature in the production of polyester, polyester-polyamide and the like is over 240 ℃, and the addition of fluorescent dye at high temperature can cause the color vividness of the produced fluorescent pigment to be reduced.
Disclosure of Invention
The invention aims to provide a non-stick screw type fluorescent pigment for low-temperature injection molding and a preparation method thereof, so as to solve the problems in the background technology.
The technical problem solved by the invention is realized by adopting the following technical scheme: a non-stick screw type fluorescent pigment for low-temperature injection molding, comprising: the main material comprises long-chain monoacid, dicarboxylic acid or anhydride and polyhydric alcohol, and the auxiliary material comprises an antioxidant, an acid catalyst, a lubricating additive and a fluorescent dye, wherein the main material comprises the following components in the raw materials: the mass ratio of the long-chain monoacid to the dicarboxylic acid or anhydride to the polyol is (30-40): (38-45): (19 to 32).
Further, the long-chain monoacid is one or more of pelargonic acid, lauric acid, oleic acid, stearic acid and erucic acid.
Further, the dicarboxylic acid or anhydride is one or more of phthalic anhydride, maleic anhydride, terephthalic acid, isophthalic acid, adipic acid and azelaic acid.
Further, the polyalcohol is one or a mixture of more of trimethylolethane, pentaerythritol, neopentyl glycol and ethylene glycol.
Further, the antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant 546.
Further, the acidic catalyst is one or more of acetic acid, sulfuric acid, phosphoric acid and hydrochloric acid.
Further, the lubricating additive is one or a mixture of more of erucamide, stearic acid amide, oleic acid amide, oligomer polymaleic anhydride grafted polyethylene and polyethylene wax.
Further, the dye is one or a mixture of rose bengal B and rose bengal 6G.
Further, the weight ratio of the antioxidant to the total weight of the long-chain monoacid, the binary aromatic carboxylic acid and the polyalcohol is 1: 100; the weight ratio of the catalyst to the total weight of the long-chain monoacid, the binary aromatic carboxylic acid and the polyalcohol is 1.5: 100; the weight ratio of the lubricating additive to the total weight of the long-chain monoacid, the dicarboxylic acid and the polyol is 12: 100; the ratio of the weight of the dye to the total weight of the long-chain monoacid, the dicarboxylic acid or the anhydride and the polyol is 3: 100.
A preparation method of a non-stick screw type fluorescent pigment for low-temperature injection molding comprises the following steps:
preparing raw materials according to a ratio, putting the long-chain monoacid and the polyhydric alcohol into a reaction kettle, stirring, and setting the temperature of heat conduction oil to 300 ℃;
heating the materials to 160 ℃ after the reaction for 1 hour, and adding the catalyst, the antioxidant and dicarboxylic acid or anhydride;
step (3), reacting for 1.5h, heating to 240 ℃, then closing heating, and preserving heat for 20-40 min;
step (4), after the heat preservation is finished, adding the lubricant and the dye, stirring for 3min, and discharging;
and (5) cooling the materials, and then carrying out coarse crushing and airflow crushing to obtain the product.
Compared with the prior art, the invention has the beneficial effects that: the invention improves the compatibility of carrier resin and injection molding materials such as PP, PE and the like, simultaneously adds the lubricating additive, plays a role in avoiding pigment from aggregating on a screw, reduces the system temperature, protects dye, and leads the prepared product to have brighter color and higher color concentration.
Detailed Description
In order to make the technical means, the characteristics, the objectives and the functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.
Example 1
A non-stick screw type fluorescent pigment for low-temperature injection molding is prepared from long-chain monoacid, dicarboxylic acid or anhydride, polyol, an antioxidant, an acid catalyst, a lubricating additive and a fluorescent dye, wherein the mass of the long-chain monoacid, the mass of the dicarboxylic acid or anhydride and the mass of the polyol are respectively 36.6g, 41.2g and 22.2 g; the long-chain monoacid is lauric acid and stearic acid, the mass of the lauric acid and the stearic acid is 21.2g and 15.4g respectively, the dicarboxylic acid or anhydride is phthalic anhydride and terephthalic acid, the mass of the phthalic anhydride and the terephthalic acid is 30g and 11.2g respectively, the polyol is trimethylolethane, the mass of the trimethylolethane is 22.2g, the antioxidant is 1010, the catalyst is acetic acid, the lubricating assistant is erucamide, and the antioxidant, the catalyst, the lubricating assistant and the dye are 1g, 1.5g, 12g and 3g respectively; the dye is rose bengal B.
The preparation method of the fluorescent pigment for injection molding, which is described in the embodiment, comprises the following steps:
(1) preparing raw materials according to a ratio, putting the long-chain monoacid and the polyhydric alcohol into a reaction kettle, stirring, and setting the temperature of heat conduction oil to 300 ℃;
(2) after reacting for 1h, heating the materials to 160 ℃, and adding the catalyst, the antioxidant and the dibasic acid;
(3) after the reaction is carried out for 1.5h and the temperature is raised to 240 ℃, the heating is closed, and the temperature is kept for about 30 min;
(4) after the heat preservation is finished, the lubricant and the dye are added, stirred for 3min and discharged;
(5) after the materials are cooled, the products are obtained by coarse grinding and air flow grinding.
Example 2
A non-stick screw type fluorescent pigment for low-temperature injection molding is prepared from long-chain monoacid, dicarboxylic acid or anhydride, polyol, an antioxidant, an acid catalyst, a lubricating additive and a fluorescent dye, wherein the mass of the long-chain monoacid, the mass of the dicarboxylic acid or anhydride and the mass of the polyol are 32.8g, 39.7g and 27.5g respectively; the long-chain monoacid is pelargonic acid, the mass of the pelargonic acid is 32.8g, the dicarboxylic acid or anhydride is maleic anhydride and isophthalic acid, the mass of the maleic anhydride and the mass of the isophthalic acid are 18.1g and 21.6g respectively, the polyol is neopentyl glycol, the mass of the neopentyl glycol is 27.5g, the antioxidant is sulfuric acid, the catalyst is antioxidant 168, and the mass of the antioxidant, the mass of the catalyst, the mass of the lubricating auxiliary agent and the mass of the dye are 1g, 1.5g, 12g and 3g respectively; the lubricating additive is oleamide and polyethylene wax, and the mass of the oleamide and the mass of the polyethylene wax are 8g and 4g respectively; the dye is rose bengal B and rose bengal 6G, and the mass of the rose bengal B and the rose bengal 6G is 1.8G and 1.2G respectively.
The preparation method of the fluorescent pigment for injection molding, which is described in the embodiment, comprises the following steps:
(1) preparing raw materials according to a ratio, putting the long-chain monoacid and the polyhydric alcohol into a reaction kettle, stirring, and setting the temperature of heat conduction oil to 300 ℃;
(2) after reacting for 1h, heating the materials to 160 ℃, and adding the catalyst, the antioxidant and the dibasic acid;
(3) after the reaction is carried out for 1.5h and the temperature is raised to 240 ℃, the heating is closed, and the temperature is kept for about 30 min;
(4) after the heat preservation is finished, the lubricant and the dye are added, stirred for 3min and discharged;
(5) after the materials are cooled, the products are obtained by coarse grinding and air flow grinding.
Example 3
A non-stick screw type fluorescent pigment for low-temperature injection molding is prepared from long-chain monoacid, dicarboxylic acid or anhydride, polyol, an antioxidant, an acid catalyst, a lubricating additive and a fluorescent dye, wherein the mass of the long-chain monoacid, the mass of the dicarboxylic acid or anhydride and the mass of the polyol are respectively 37.3g, 41.9g and 20.8 g; the long-chain monoacid is oleic acid, the mass of the oleic acid is 37.3g, the dicarboxylic acid or anhydride is adipic acid, the mass of the adipic acid is 41.9g, the polyol is pentaerythritol, the mass of the pentaerythritol is 20.8g, the antioxidant is phosphoric acid, the catalyst is an antioxidant 546, the lubricating assistant is oligomer polymaleic anhydride grafted polyethylene, and the mass of the antioxidant, the mass of the catalyst, the mass of the lubricating assistant and the mass of the dye are 1g, 1.5g, 12g and 3g respectively; the dye is rose bengal 6G.
The preparation method of the fluorescent pigment for injection molding, which is described in the embodiment, comprises the following steps:
(1) preparing raw materials according to a ratio, putting the long-chain monoacid and the polyhydric alcohol into a reaction kettle, stirring, and setting the temperature of heat conduction oil to 300 ℃;
(2) after reacting for 1h, heating the materials to 160 ℃, and adding the catalyst, the antioxidant and the dibasic acid;
(3) after the reaction is carried out for 1.5h and the temperature is raised to 240 ℃, the heating is closed, and the temperature is kept for about 30 min;
(4) after the heat preservation is finished, the lubricant and the dye are added, stirred for 3min and discharged;
(5) after the materials are cooled, the products are obtained by coarse grinding and air flow grinding.
Example 4
A non-stick screw type fluorescent pigment for low-temperature injection molding is prepared from long-chain monoacid, dicarboxylic acid or anhydride, polyol, an antioxidant, an acid catalyst, a lubricating additive and a fluorescent dye, wherein the mass of the long-chain monoacid, the mass of the dicarboxylic acid or anhydride and the mass of the polyol are respectively 30g, 38g and 32 g; the long-chain monoacid is erucic acid, the mass of the erucic acid is 30g, the dicarboxylic acid or anhydride is azelaic acid, the mass of the azelaic acid is 38g, the polyol is ethylene glycol, the mass of the ethylene glycol is 32g, the antioxidant is hydrochloric acid, the catalyst is antioxidant 1010, the lubricating additive is stearic acid amide, and the antioxidant, the catalyst, the lubricating additive and the dye are 1g, 1.5g, 12g and 3g respectively; the dye is rose bengal B.
The preparation method of the fluorescent pigment for injection molding, which is described in the embodiment, comprises the following steps:
(1) preparing raw materials according to a ratio, putting the long-chain monoacid and the polyhydric alcohol into a reaction kettle, stirring, and setting the temperature of heat conduction oil to 300 ℃;
(2) after reacting for 1h, heating the materials to 160 ℃, and adding the catalyst, the antioxidant and the dibasic acid;
(3) after the reaction is carried out for 1.5h and the temperature is raised to 240 ℃, the heating is closed, and the temperature is kept for about 30 min;
(4) after the heat preservation is finished, the lubricant and the dye are added, stirred for 3min and discharged;
(5) after the materials are cooled, the products are obtained by coarse grinding and air flow grinding.
Comparative example 1
A traditional fluorescent pigment for injection molding is prepared from benzoic acid, polyhydric alcohol, dicarboxylic acid, a catalyst, an antioxidant and a fluorescent dye, wherein the polyhydric alcohol is pentaerythritol, the dicarboxylic acid is isophthalic acid, the antioxidant is antioxidant 1010, the catalyst is sulfuric acid, and the mass of the benzoic acid, the polyhydric alcohol, the polybasic acid, the fluorescent dye, the catalyst and the antioxidant is 41.2g, 32g, 26.8g, 1.5g, 1g and 3g respectively.
The preparation method of the traditional fluorescent pigment for injection molding, which is described in the comparative example, comprises the following steps:
(1) preparing raw materials according to a ratio, putting the benzoic acid and the polyhydric alcohol into a reaction kettle, stirring, and setting the temperature of heat conduction oil to 300 ℃;
(2) after reacting for 1h, heating the materials to 160 ℃, and adding the catalyst, the antioxidant and the dicarboxylic acid;
(3) after the reaction is carried out for 1.5h and the temperature is raised to 240 ℃, the heating is closed, and the temperature is kept for about 30 min;
(4) adding dye after heat preservation, stirring for 3min and discharging;
(5) after the materials are cooled, the products are obtained by coarse grinding and air flow grinding.
The products of examples 1-4 and comparative example 1 were tested for their properties and the results are shown in the following table.
The main performance indexes of the product are as follows:
as can be seen from the table above, the brightness of the fluorescent pigment product obtained by the invention is obviously improved, the volatile matter at 105 ℃ is greatly reduced, and the storage time during injection molding is greatly shortened.
The fluorescent pigment for injection molding disclosed by the invention adopts long-chain monoacid, improves the compatibility of carrier resin and injection molding materials such as PP (polypropylene), PE (polyethylene) and the like, and simultaneously avoids the condition that the pigment is gathered on a screw rod by adding a lubricating additive.
According to the preparation method of the fluorescent pigment for injection molding, a product obtained by using benzoic acid is not used, monomers are not easy to precipitate, the performance is more stable, and the production and use processes are more environment-friendly.
According to the preparation method of the fluorescent pigment for injection molding, the lubricating additive is added before the dye is added, so that the system temperature is reduced, the subsequent dye is protected, and the obtained product is brighter in color and higher in color concentration.
Claims (10)
1. A non-stick screw type fluorescent pigment for low-temperature injection molding, comprising: the main material and the auxiliary material are characterized in that: the main materials comprise long-chain monoacid, dicarboxylic acid or anhydride and polyhydric alcohol, the auxiliary materials comprise an antioxidant, an acidic catalyst, a lubricating additive and a fluorescent dye, wherein the main materials in the raw materials comprise: the mass ratio of the long-chain monoacid to the dicarboxylic acid or anhydride to the polyol is (30-40): (38-45): (19 to 32).
2. The non-stick screw type fluorescent pigment for low-temperature injection molding according to claim 1, characterized in that: the long-chain monoacid is one or a mixture of pelargonic acid, lauric acid, oleic acid, stearic acid and erucic acid.
3. The non-stick screw type fluorescent pigment for low-temperature injection molding according to claim 1, characterized in that: the dicarboxylic acid or anhydride is one or more of phthalic anhydride, maleic anhydride, terephthalic acid, isophthalic acid, adipic acid and azelaic acid.
4. The non-stick screw type fluorescent pigment for low-temperature injection molding according to claim 1, characterized in that: the polyalcohol is one or a mixture of more of trimethylolethane, pentaerythritol, neopentyl glycol and ethylene glycol.
5. The non-stick screw type fluorescent pigment for low-temperature injection molding according to claim 1, characterized in that: the antioxidant is one or a mixture of antioxidant 1010, antioxidant 168 and antioxidant 546.
6. The non-stick screw type fluorescent pigment for low-temperature injection molding according to claim 1, characterized in that: the acidic catalyst is one or a mixture of acetic acid, sulfuric acid, phosphoric acid and hydrochloric acid.
7. The non-stick screw type fluorescent pigment for low-temperature injection molding according to claim 1, characterized in that: the lubricating additive is one or a mixture of more of erucamide, stearic acid amide, oleic acid amide, oligomer polymaleic anhydride grafted polyethylene and polyethylene wax.
8. The non-stick screw type fluorescent pigment for low-temperature injection molding according to claim 1, characterized in that: the dye is one or two of rose bengal B and rose bengal 6G.
9. The fluorescent pigment for low-temperature injection molding of a non-stick screw type according to any one of claims 1 to 8, wherein: the weight ratio of the antioxidant to the total weight of the long-chain monoacid, the binary aromatic carboxylic acid and the polyalcohol is 1: 100; the weight ratio of the catalyst to the total weight of the long-chain monoacid, the binary aromatic carboxylic acid and the polyalcohol is 1.5: 100; the weight ratio of the lubricating additive to the total weight of the long-chain monoacid, the dicarboxylic acid and the polyol is 12: 100; the ratio of the weight of the dye to the total weight of the long-chain monoacid, the dicarboxylic acid or the anhydride and the polyol is 3: 100.
10. A preparation method of a non-stick screw type fluorescent pigment for low-temperature injection molding is characterized by comprising the following steps: the method comprises the following steps:
preparing raw materials according to a ratio, putting the long-chain monoacid and the polyhydric alcohol into a reaction kettle, stirring, and setting the temperature of heat conduction oil to 300 ℃;
heating the materials to 160 ℃ after the reaction for 1 hour, and adding the catalyst, the antioxidant and dicarboxylic acid or anhydride;
step (3), reacting for 1.5h, heating to 240 ℃, then closing heating, and preserving heat for 20-40 min;
step (4), after the heat preservation is finished, adding the lubricant and the dye, stirring for 3min, and discharging;
and (5) cooling the materials, and then carrying out coarse crushing and airflow crushing to obtain the product.
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| US5486444A (en) * | 1994-08-29 | 1996-01-23 | Xerox Corporation | Polyester processes for the preparation of toner |
| CN105885039A (en) * | 2016-06-07 | 2016-08-24 | 黄山加佳荧光材料有限公司 | Preparation method of high-performance daylight type fluorescent pigment for powder coating |
| CN109054301A (en) * | 2018-07-25 | 2018-12-21 | 黄山加佳荧光材料有限公司 | A kind of injection molding fluorescent pigment and preparation method thereof |
| CN109851751A (en) * | 2018-12-13 | 2019-06-07 | 江门市制漆厂有限公司 | Radiation-curable/damp solidified resin of a kind of Diamond Search and preparation method thereof |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486444A (en) * | 1994-08-29 | 1996-01-23 | Xerox Corporation | Polyester processes for the preparation of toner |
| CN105885039A (en) * | 2016-06-07 | 2016-08-24 | 黄山加佳荧光材料有限公司 | Preparation method of high-performance daylight type fluorescent pigment for powder coating |
| CN109054301A (en) * | 2018-07-25 | 2018-12-21 | 黄山加佳荧光材料有限公司 | A kind of injection molding fluorescent pigment and preparation method thereof |
| CN109851751A (en) * | 2018-12-13 | 2019-06-07 | 江门市制漆厂有限公司 | Radiation-curable/damp solidified resin of a kind of Diamond Search and preparation method thereof |
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| CN110819077B (en) | 2022-04-12 |
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