CN101200541A - Long-chain diacid polyamide resin and preparation method thereof - Google Patents
Long-chain diacid polyamide resin and preparation method thereof Download PDFInfo
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- CN101200541A CN101200541A CNA2007101946449A CN200710194644A CN101200541A CN 101200541 A CN101200541 A CN 101200541A CN A2007101946449 A CNA2007101946449 A CN A2007101946449A CN 200710194644 A CN200710194644 A CN 200710194644A CN 101200541 A CN101200541 A CN 101200541A
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Abstract
The present invention relates to long-chain diacid polyamide resin and the preparation method. The present invention is characterized in that the long-chain diacid polyamide resin with carboxyl methyl octadecanoic diacid and hexamethylene diamine as raw materials is prepared through salification, condensation and polymerization reactions and the molecular quality range is 5,000 to 30,000. The octadecanoic alkyl monomer polyamide resin provided by the present invention has the advantages of long alkyl chain in the structure, good waterproof performance, high density, high mechanical intensity, good heat resistance, regenerative raw materials and environment friendliness.
Description
Technical field
The present invention relates to a kind of long-chain diacid polyamide resin and preparation method thereof, belong to chemical method synthetic resins material field in the inedible oil fat chemistry, specifically relate to a kind of utilization and be raw material based on carboxymethyl 18 carbon dicarboxylic acids and the hexanediamine of Witconol 2301, by the technology of salify, the synthetic long-chain diacid polyamide resin of polycondensation, this product can be used for various products such as preparation engineering plastics, fiber.
Background technology
Polyamide resin is commonly called as nylon (Nylon), and English name Polyamide (being called for short PA) is the general name that contains the polymkeric substance of amide group-CONH-in the macromolecular main chain repeating unit.Comprise aliphatics PA, fat-aromatic series PA and aromatic series PA, wherein aliphatics PA is wide in variety, and output is big, is widely used, and development product has engineering plastics, fiber, elastomerics etc.
Polyamide resin contains hydrophilic amide group, and have following characteristics: 1. mechanical property is excellent, physical strength height, good toughness; 2. resistance toheat is good; 3. wear-resisting wiping is good; 4. electrical insulating property is excellent; 5. water-absorbent is big.Polyamide resin is widely used in a plurality of fields such as automobile, electronics/electric, mechanical, household utensils.
At present, polyamide resin exists preparation process seriously polluted mainly with the petroleum base feedstock production, and raw material is non-renewable, product toxicity, defectives such as cost height.The longest with the aliphatic monomer carbochain is 16 carbon.
Summary of the invention
The purpose of this invention is to provide a kind of long-chain diacid polyamide resin and preparation method thereof, resin of the present invention has characteristics such as density height, physical strength height, high temperature resistant, environmental friendliness.
Long-chain diacid polyamide resin of the present invention is to be raw material with carboxymethyl 18 carbon dicarboxylic acids and hexanediamine, and by the 18 monomer alkyl polyamide resins that salify, polycondensating process process are prepared from, its molecular weight range is 5000～30000.
Concrete step of preparation process is as follows:
(1) salify:
With the weight ratio of material is that 1～3: 1 carboxymethyl 18 carbon dicarboxylic acids and hexanediamine are heated to 150～210 ℃, reaction 2～5h while stirring under nitrogen protection;
(2) dehydration:
The solvent C that adds reactant gross weight 1～10%
12～14Alkane steams the water of reaction generation and excessive diprotic acid with azeotropic distn, promptly obtains product octadecyl monomer polyamide resin, and its molecular weight range is 5000～30000;
Reaction formula is:
As follows with the similar correlated performance index of hexadecyl monomer polyamide resin:
| Project | Hexadecyl monomer polyamide resin | Octadecyl monomer polyamide resin |
| Density g/mm 3 | 1.02～1.03 | 1.04～1.06 |
| Fusing point ℃ 〉= | 193 | 208 |
| Tensile strength N/cm 2 ≥ | 6000 | 8000 |
| Elongation % 〉= | 80～150 | 100～300 |
| Bending strength N/cm 2 ≥ | 7000 | 10000 |
| Heat distortion temperature ℃ 〉= | 160 | 190 |
| Use continuously top temperature ℃ 〉= | 83 | 100 |
Used raw material carboxymethyl 18 carbon dicarboxylic acids of the present invention derive from Witconol 2301.
The C that the present invention is used
12～14Alkane solvent is the C of bio oil hydrocracking preparation
12～14Positive structure and isoparaffin mixture.
Beneficial effect of the present invention is:
The octadecyl monomer polyamide resin that the present invention makes, alkyl chain length in the structure, good waterproof performance, the density height, the physical strength height, high thermal resistance is good, and raw material resources are renewable, environmental friendliness.
The present invention adopts the environment-friendly type solvent C
12～14Alkane does not have problem of environmental pollution.
Description of drawings
Fig. 1 is total process flow sheet.
Embodiment
The present invention is a raw material with carboxymethyl 18 carbon dicarboxylic acids and hexanediamine, prepares octadecyl monomer polyamide resin by salify, polycondensating process process.(total process flow sheet as shown in Figure 1).
To particular content of the present invention, be described in further detail as follows in conjunction with the accompanying drawings below:
(1) salify:
With the weight ratio of material is that 2: 1 carboxymethyl 18 carbon dicarboxylic acids and hexanediamine is heated to 190 ℃, reaction 4h while stirring under nitrogen protection.
(2) dehydration:
The solvent C that adds reactant gross weight 6%
12～14Alkane steams the water of reaction generation and excessive diprotic acid with azeotropic distn, promptly obtains product octadecyl polyamide resin, and its molecular weight ranges is 10000～25000.
The main performance index of prepared octadecyl monomer polyamide resin is:
| Project | Octadecyl monomer polyamide resin |
| Density g/mm 3 | 1.046 |
| Fusing point ℃ | 217 |
| Tensile strength N/cm 2 | 8700 |
| Elongation % | 170 |
| Bending strength N/cm 2 | 12800 |
| Heat distortion temperature ℃ | 203 |
| Use continuously top temperature ℃ | 122 |
Claims (5)
1. long-chain diacid polyamide resin, it is characterized in that: with carboxymethyl 18 carbon dicarboxylic acids and hexanediamine is that feedstock production forms, and its molecular weight range is 5000～30000, and its molecular formula is:
2. long-chain diacid polyamide resin according to claim 1 is characterized in that: its performance index are:
3. the preparation method of a long-chain diacid polyamide resin according to claim 1 is characterized in that: concrete step of preparation process is as follows:
(1) salify:
With the weight ratio of material is that 1～3: 1 carboxymethyl 18 carbon dicarboxylic acids and hexanediamine are heated to 150～210 ℃, reaction 2～5h while stirring under nitrogen protection;
(2) dehydration:
The solvent C that adds reactant gross weight 1～10%
12～14Alkane steams the water of reaction generation and excessive diprotic acid with azeotropic distn, promptly obtains product octadecyl monomer polyamide resin;
Reaction formula is:
4. the preparation method of a kind of long-chain diacid polyamide resin according to claim 3, it is characterized in that: used raw material carboxymethyl 18 carbon dicarboxylic acids derive from Witconol 2301.
5. the preparation method of a kind of long-chain diacid polyamide resin according to claim 3 is characterized in that: used C
12～14Alkane solvent is the C of bio oil hydrocracking preparation
12～14Positive structure and isoparaffin mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101946449A CN101200541A (en) | 2007-11-26 | 2007-11-26 | Long-chain diacid polyamide resin and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101946449A CN101200541A (en) | 2007-11-26 | 2007-11-26 | Long-chain diacid polyamide resin and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101200541A true CN101200541A (en) | 2008-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101946449A Pending CN101200541A (en) | 2007-11-26 | 2007-11-26 | Long-chain diacid polyamide resin and preparation method thereof |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790288A (en) * | 2016-09-22 | 2019-05-21 | 罗地亚经营管理公司 | The production of diamines/diacid salt aqueous solution |
-
2007
- 2007-11-26 CN CNA2007101946449A patent/CN101200541A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790288A (en) * | 2016-09-22 | 2019-05-21 | 罗地亚经营管理公司 | The production of diamines/diacid salt aqueous solution |
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Open date: 20080618 |