Polyester resin for N,N,N',N'-tetra(2-hydroxypropyl) adipamide system and preparation method thereof

A technology of polyester resin and adipamide, which is applied in the field of polyester resin and polyester resin preparation for N,N,N',N'-tetraadipamide system, can solve the impact resistance and boiling resistance. Unsatisfactory, low reactivity, insufficient curing, etc

Active Publication Date: 2019-03-08
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, when this type of polyester resin is used for curing with N,N,N',N'-tetrakis(2-hydroxypropyl)adipamide curing agent with large steric hindrance and low reactivity, insufficient curing will occur. , impact resistance and boiling resistance are unsatisfactory results

Method used

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  • Polyester resin for N,N,N',N'-tetra(2-hydroxypropyl) adipamide system and preparation method thereof
  • Polyester resin for N,N,N',N'-tetra(2-hydroxypropyl) adipamide system and preparation method thereof
  • Polyester resin for N,N,N',N'-tetra(2-hydroxypropyl) adipamide system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A, 12mol% of 1,8-octanediol, 15mol% of 3-(trimethylsilyl)-1,2-propanediol, 6mol% of 5-hydroxycapric glyceride, 18mol% of neopentyl Diol is added into the mixer, and heated and melted at 110-125°C to obtain a mixed material;

[0049] B. Add 15mol% terephthalic acid, 18mol% o-carboxyphenylacetic acid and 12mol% 1,1'-ferrocenedicarboxylic acid to the mixed material in A, and add 0.2mol% catalyst at the same time, under nitrogen protection Slowly raise the temperature to about 200°C, then keep warm for 3 hours, then gradually raise the temperature until no obvious distillate is distilled out, and the acid value of the reactant is 18mgKOH / g; the temperature of the reaction kettle is less than or equal to 248°C;

[0050] C. Add 0.4mol% antioxidant 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid, keep a vacuum of 45mmHg for 6h to promote the formation of polyester resin , stop vacuuming when the acid value drops to 10mgKOH / g;

[0051] D. When the temperature i...

Embodiment 2

[0057] The difference with embodiment 1 is that the consumption of each raw material in embodiment 2 is as follows:

[0058] Terephthalic acid 8mol%

[0059] o-Carboxyphenylacetic acid 20mol%

[0060] 1,1′-Ferrocenedicarboxylic acid 12mol%

[0061] 1,8-octanediol 14mol%

[0062] 3-(trimethylsilyl)-1,2-propanediol 18mol%

[0063] 5-Hydroxycapric Glyceride 6mol%

[0064] Neopentyl glycol 18mol%

[0065] Calcein 4mol%.

[0066] All the other steps are identical to Example 1.

[0067] Polyester resin acid value: 32mgKOH / g, softening point 114°C.

Embodiment 3

[0069] The difference with embodiment 1 is that the consumption of each raw material in embodiment 2 is as follows:

[0070] Terephthalic acid 16mol%

[0071] o-Carboxyphenylacetic acid 15mol%

[0072] 1,1′-Ferrocenedicarboxylic acid 8mol%

[0073] 1,8-octanediol 12mol%

[0074] 3-(trimethylsilyl)-1,2-propanediol 16mol%

[0075] 5-Hydroxycapric Glyceride 8mol%

[0076] Neopentyl glycol 21mol%

[0077] Calcein 4mol%.

[0078] All the other steps are identical to Example 1.

[0079] Polyester resin acid value: 28mgKOH / g, softening point 115°C.

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Abstract

The invention belongs to the technical field of polyester resin materials and preparation, particularly relates to a boiling-resistant polyester resin for a N,N,N',N'-tetra(2-hydroxypropyl) adipamidesystem, and furthermore relates to a preparation method of the resin. The polyester resin for the N,N,N',N'-tetra(2-hydroxypropyl) adipamide system is mainly formed by terephthalic acid, o-carboxyphenylacetic acid, 1,1'-ferrocene dicarboxylic acid, calcein, 1,8-octylene glycol, 3-(trimethylsilyl)-1,2-propanediol, 5-hydroxydecanoic acid glyceride and neopentyl glycol. The boiling-resistant polyester resin for the N,N,N',N'-tetra(2-hydroxypropyl) adipamide system obtained N, N, N', N'-tetra(2 hydroxypropyl) adipamide system is blocked by the high-activity tetrabasic acid calcein, and the final activity of the polyester resin is relatively high, so that the sufficient curing with a (N,N,N',N'-tetra(2-hydroxypropyl) adipamide) curing agent is well realized, and a coating film with a relativelyhigh crosslinking density is obtained.

Description

technical field [0001] The invention belongs to the technical field of polyester resin materials and preparation, in particular to a kind of polyester resin for N,N,N',N'-tetrakis(2-hydroxypropyl)adipamide system, and also to the above-mentioned polyester Resin preparation method. Background technique [0002] CN101220239A discloses a polyester resin powder coating curing agent, which is characterized in that it consists of tetrakis (2-hydroxyethyl) adipamide and three (2-hydroxyethyl) isocyanurate, wherein, tetrakis (2 -Hydroxyethyl)adipamide accounts for 90%-50% of the total weight, and tris(2-hydroxyethyl)isocyanurate accounts for 10%-50% of the total weight. [0003] With N,N,N',N'-tetrakis(2-hydroxyethyl)adipamide curing agent (HAA for short, see molecular structure figure 1 ) compared to N, N, N', N'-tetrakis (2-hydroxypropyl) adipamide curing agent (molecular structure see figure 2 ) in the molecular structure, there is one more methyl group at the adjacent positi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/695C08G63/685
CPCC08G63/6856C08G63/6956
Inventor 王永垒李海云江蓉朱梦泽魏文静张雅文许涛
Owner HUANGSHAN UNIV
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