WO2017148301A1 - Rigidity-enhancing nucleating agent composition containing ethylene bis-stearamide - Google Patents

Abstract

The present invention relates to a rigidity-enhancing nucleating agent composition containing ethylene bis-stearamide, and also relates to thermoplastics containing the nucleating agent composition. The rigidity-enhancing nucleating agent composition contains bis[4-(tert-butyl)benzoic acid]hydroxyl aluminum and ethylene bis-stearamide with a weight ratio of 5:1-1:5. Furthermore, hydrated magnesium silicate can be additionally added to the rigidity-enhancing nucleating agent composition; the weight ratio of bis[4-(tert-butyl)benzoic acid]hydroxyl aluminum to ethylene bis-stearamide to hydrated magnesium silicate is 1-3:1-3:1-5. Thermoplastics modified with the nucleating agent composition of the present invention, such as PET, PBT, and nylon, can endure long-term high temperature and mechanical stress, and are suitable to be applied to specialized outdoor materials for producing daily products, medical instruments, electric appliances, automobiles, and tubes and pipes, etc.

Description

Increased nucleating agent composition containing vinyl bis-hard amide Technical field

The present invention relates to the field of nucleating agents, and in particular to a rigid nucleating agent composition containing vinyl bis-hard amide, and to a thermoplastic containing the nucleating agent composition.

technical background

Thermoplastic refers to plastics with heat softening to flow and cooling hardening properties, which can be processed into various injection molded products by injection, extrusion and blow molding, such as daily life products, medical appliances, electrical appliances, automobiles and pipe pipes. Wait. Thermoplastic polymers to which the present invention relates include, but are not limited to, polyolefins (e.g., polyethylene, polypropylene, polybutylene, and any combination thereof), polyamides (e.g., nylon), polyurethanes, polyesters (e.g., poly-pairs). Ethylene phthalate) and its analogs.

At present, the related properties of adding a nucleating agent to thermoplastics such as polyolefins, nylons, etc. are mainly as follows: 1. Fast polymer crystallization rate and/or high crystallization temperature, during polymer melt cooling and solidification crystallization Long chain of macromolecules from disordered to ordered crystalline state requires longer relaxation time, low crystallization rate and crystallization temperature, and large spherulites are formed, and obvious interfaces between spherulites cause different The internal stress, when impacted by external force, is prone to cracking and cracking. After the nucleating agent is added during the cooling of the polymer melt formulation, the nucleating agent compound is used to provide the nucleation point for crystal growth, so that the crystallization Speed is increased, allowing crystallization to occur at higher temperatures, while high polymer peak crystallization temperatures indicate high nucleation efficiency; ultimately, in manufacturing parts, high nucleation efficiency usually means fast processing cycles and more Ideal physical properties such as hardness, modulus of elasticity, tensile strength, impact balance, etc. In general, the stiffness of a thermoplastic is characterized by a flexural modulus, Characterization is characterized by impact strength; 2. High transparency: It is currently required that the thermoplastic product itself has good transparency, the nucleating agent uniformly dispersed in the plastic becomes smaller, the crystal becomes fine, and the refined crystal reduces the crystal part and the non- Scattering at the interface of the crystal portion, when the crystal size is less than 1 μm, the transparency sharply increases.

In addition, in the processing of thermoplastics, especially nylon, there are often difficulties in demoulding. Most of the nylons on the market are not easily demolded during the injection molding process, and the fluidity is not strong, which causes troubles in manufacturing. At present, most of the processing uses the addition of a release agent, but the release agent contains polycyclic aryl cyanide, which is environmentally friendly. In order to ensure safety and meet environmental protection requirements, the most direct method is to remove the mold itself without using a release agent.

In the prior art, vinyl bis-hard amide is also called ethylene bis-hard amide, referred to as EBS, which is a new type of plastic lubricant developed in recent years, widely used in PVC products, ABS, high impact polystyrene, In the molding process of polyolefin, rubber and plastic products. Since the molecular structure contains two amide groups -C-NH-, the plastic product has good antistatic property after being added to the plastic, so that the plastic product is not easy to "dust" and dirty. At the same time, there are sporadic reports that EBS can be used as a nucleating transparent agent, which can shorten its nucleation time in polyolefin, polyoxymethylene and polyamide compounds, promote the thinning of resin structure, and improve the mechanical properties and transparency of products. . However, there is nothing to do with its use in combination with other nucleating agents to improve its properties, especially to increase the rigidity of the polymer.

Regarding the composite nucleating agent, the patent CN102219927B has been protected by a nucleating agent composition consisting of a certain proportion of sodium benzoate, hydroxyaluminum p-tert-butylbenzoate and bis[2,2'-methylene-di- (4,6-di-tert-butylphenyl)]aluminum phosphate composition, studies have shown that the nucleating agent composition breaks through the original single nucleating agent can not simultaneously increase the polypropylene impact strength and flexural modulus limit, not only The flexural modulus and heat distortion temperature of the polypropylene article can be increased, and the impact strength can be remarkably improved. CN102850578B discloses a nucleating agent composition of a diaryl organophosphate and an aromatic carboxylic acid metal salt which has a better effect on the rigidity, transparency and heat resistance of the polyolefin than when used alone. CN101065434A discloses a thermoplastic polymer composition comprising two nucleating agents, respectively, which combines a dicarboxylate and an organophosphate, and the results show that the transparency, toughness and rigidity are enhanced compared to the individual.

It can be seen that research on the configuration of two or more nucleating agents into composite nucleating agents has gradually become a hot spot. The use of multiple nucleating agents is used in areas that are very difficult to predict in the chemical field, and unless a large amount of work is tried, tested, and done, it is often impossible to know which substance is effective.

There is a need to provide a nucleating agent for thermoplastics that combines fast polymer crystallization rates and/or high crystallization temperatures while also providing improved release properties. The applicant of the present invention has developed a nucleating agent composition which has been greatly improved in the above properties as compared with its individual components after a long period of investigation.

Summary of the invention

The object of the present invention is to provide a nucleating nucleating agent composition containing vinyl bis-hard amide, said nucleation The composition of the composition simultaneously produces high nucleation efficiency in the target thermoplastic article and improves the release properties of the article. The high nucleation efficiency is manifested by a fast polymer crystallization rate and/or a high crystallization temperature, which ultimately results in a significant increase in the flexural modulus and heat distortion temperature of the product.

Another object of the present invention is to provide the use of the above nucleating agent composition in a thermoplastic.

A third object of the present invention is to provide the above nucleating agent composition in polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and nylon (PA6 or PA66). application.

In order to achieve the above object, the present invention provides a nucleating nucleating agent composition containing a vinyl bis-chamelamide containing bis-[4-tert-butylbenzoic acid] hydroxyaluminum and ethylene The base double hard amide has a weight ratio of 5:1 to 1:5.

Preferably, the weight ratio of bis-[4-tert-butylbenzoic acid]hydroxyaluminum to vinyl bis-carbamide is from 3:1 to 1:3; most preferably, the weight ratio of the two is 1:1.

Further, hydrated magnesium silicate may be additionally added to the above-mentioned nucleating nucleating agent composition to form a ternary addition nucleating nucleating agent composition containing vinyl bis-hard amide, the nucleating agent combination Containing bis-[4-tert-butylbenzoic acid]hydroxyaluminum, vinyl bis-hard amide and hydrated magnesium silicate, the weight ratio of the three is 1-3:1-3:1-5; preferably 1- 2:1-2:1-4, most preferably 1:1:2.

The invention further provides for the use of the above nucleating agent composition in a thermoplastic.

The invention further provides for the use of the above nucleating agent compositions in PET, PBT and nylon.

The present invention provides the above nucleating agent composition for simultaneously increasing the flexural modulus and mold release property of the above article.

The present invention also provides a thermoplastic comprising a nucleating agent composition and a thermoplastic as described above, wherein the weight of the nucleating agent composition is from 0.01 to 2.00% by weight of the thermoplastic; preferably from 0.05 to 1.00%; further It is preferably 0.05-0.50%; particularly preferably 0.05-0.15%; the thermoplastic is PET, PBT or nylon.

The term "thermoplastic" as used in the present invention refers to a polymeric material that will melt upon exposure to sufficient heat, but will remain solid when sufficiently cooled, but will not retain its original shape without the use of molds or the like. In particular, the term may also include only polymers defined in the broad range below: after formation of the melt, the polymer may also exhibit a crystalline or semi-crystalline form by cooling. Thermoplastic polymers to which the present invention relates include, but are not limited to, polyolefins (e.g., polyethylene, polypropylene, polybutylene, and any combination thereof), polyamides (e.g., nylon), polyurethanes, polyesters (e.g., poly-pairs). Ethylene phthalate) and its analogs.

Unless otherwise stated, "%" in the present application refers to a percentage by weight.

When the above nucleating agent composition of the present invention is mixed with PET, PBT or nylon, other substances may be added to enhance other properties of the article.

The nucleating agent composition provided by the invention makes up for the function advantage of various nucleating agents in the nucleating agent composition under the condition that the single nucleating agent improves the rigidity and the mold release property of the thermoplastic plastic product. So that the final product can combine the above various properties.

When a vinyl bis-carbamide is added to the nucleating agent composition of the present invention and applied to a thermoplastic article, the release property is remarkably improved, and the gloss of the article is also improved.

The thermoplastic PET, PBT and nylon modified by the nucleating agent composition of the invention can withstand high temperature and mechanical stress for a long time, and are suitable for outdoor special materials such as daily life products, medical appliances, electric appliances, automobiles and pipe pipes. Applications.

detailed description

The invention is further clarified by the following examples, but the preferred embodiments of the invention are provided herein, and the scope of the invention is not limited thereto.

First, the preparation example:

Sources of raw materials: bis-[4-tert-butylbenzoic acid]hydroxyaluminum, vinyl bis-hard amide and hydrated magnesium silicate are all commercially available products.

PET, PBT and nylon (PA6) are also commercially available (specific models are PET-BG80, PBT-1100, PA6-M2000)

1. Preparation of the nucleating agent composition of the present invention

Example 1:

8.3 g of bis-[4-tert-butylbenzoic acid]hydroxyaluminum and 1.7 g of vinylbis-hard amide were accurately weighed and uniformly mixed in a stirrer to obtain a nucleating agent 1 of the present invention.

Example 2:

1.7 g of bis-[4-tert-butylbenzoic acid]hydroxyaluminum and 8.3 g of vinylbis-hard amide were accurately weighed and uniformly mixed in a stirrer to obtain a nucleating agent 2 of the present invention.

Example 3:

7.5 g of bis-[4-tert-butylbenzoic acid]hydroxyaluminum and 2.5 g of vinylbis-hard amide were accurately weighed and uniformly mixed in a stirrer to obtain a nucleating agent 3 of the present invention.

Example 4:

2.5 g of bis-[4-tert-butylbenzoic acid]hydroxyaluminum and 7.5 g of vinyl bis-hardamide were accurately weighed separately, and then uniformly mixed in a stirrer to obtain a nucleating agent 4 of the present invention.

Example 5:

5 g of bis-[4-tert-butylbenzoic acid]hydroxyaluminum and 5 g of vinylbis-hard amide were accurately weighed and uniformly mixed in a stirrer to obtain a nucleating agent 5 of the present invention.

Example 6

Accurately weighed 1.41 g of bis-[4-tert-butylbenzoic acid]hydroxyaluminum, 1.41 g of vinyl bis-hardamide, and 7.18 g of hydrated magnesium silicate, respectively, and then uniformly mixed in a stirrer to obtain the nucleation of the present invention. Agent 6.

Example 7

Accurately weigh 2.5 g of bis-[4-tert-butylbenzoic acid]hydroxyaluminum, 2.5 g of vinylbis-hard amide, and 5 g of hydrated magnesium silicate, and then uniformly mix in a stirrer to obtain the nucleating agent of the present invention. 7.

2. Application examples

(1) Application of the nucleating agent of the invention in PA6

The nucleating agent 1 prepared in Example 1 was extruded and granulated in a twin-screw extruder according to a 0.15% addition amount of PA6 mass, and dried at a processing temperature of 250 ° C to obtain nylon particles 1.

Based on the same method, the nucleating agents 2-7 prepared in the above Examples 2-7 were respectively obtained into nylon particles 2-7.

The nucleating agents 1-7 prepared in the above Examples 1-7 were respectively obtained into nylon particles 8-14, except that the nucleating agent was added in an amount of 0.05%, based on the same method.

Similarly, blank nylon particle control samples were prepared without adding a nucleating agent under the conditions of nylon particle 1 preparation.

Similarly, nylon nucleating agents P22 and CAV102 which are currently used in the market were separately added in an amount of 0, 15% in accordance with the conditions for the preparation of the nylon particles 1, and nylon particles P22 and nylon particles CAV102 were obtained.

(2) Application of the nucleating agent of the invention in PET

The nucleating agent 1 prepared in Example 1 was extruded and granulated in a twin-screw extruder according to the amount of 0.15% of the PET mass, and dried at a processing temperature of 260 ° C to obtain PET pellets 1.

Based on the same method, the nucleating agents 2-7 prepared in the above Examples 2-7 were respectively prepared into PET pellets. 2-7.

The nucleating agents 1-7 prepared in the above Examples 1-7 were respectively prepared into PET particles 8-14, except that the amount of the nucleating agent added was 0.05%, based on the same method.

Similarly, blank PET particle control samples were prepared without adding a nucleating agent according to the conditions of PET particle 1 preparation.

(3) Application of the nucleating agent of the invention in PBT

The nucleating agent 1 prepared in Example 1 was extruded and granulated by a twin-screw extruder in an amount of 0.15% by mass of PBT, and dried at a processing temperature of 250 ° C to obtain PBT pellets 1.

Based on the same method, the nucleating agents 2-7 prepared in the above Examples 2-7 were respectively prepared to obtain PBT particles 2-7, respectively.

Except that the amount of the nucleating agent added was 0.05%, the nucleating agents 1-7 prepared in the above Examples 1-7 were respectively prepared to obtain PBT particles 8-14, respectively, based on the same method.

Similarly, blank PBT particle control samples were prepared without adding a nucleating agent according to the conditions of PBT particle 1 preparation.

Second, performance test examples

1. Test crystallization temperature and release effect

The crystallization temperature of the nylon (PA6) to which the nucleating agent composition of the present invention is added is tested by DSC, as follows: under nitrogen conditions, the temperature is raised to 260 ° C at a temperature increase rate of 10 ° C / min, the temperature is 3 min, and then 10 ° C / min. The temperature was lowered to 25 ° C, and then the temperature was raised to 260 ° C at 10 ° C / min, and the cooling curve and the second heating curve were recorded.

The demolding performance is divided into the following four levels according to the time required for complete demolding:

(1) poor - sticking mold;

(2) Medium - manual assisted demoulding;

(3) Good - basically capable of automatic demoulding, occasionally manual assist;

(4) Excellent - completely automatic demoulding.

Table 1-2 below shows the compositions of the present invention applied to nylon in their respective crystallization temperatures and release effects in varying amounts and ratios.

Table 1 Desiccation effect of bis-[4-tert-butylbenzoic acid] hydroxyaluminum and vinyl bis-carbamide on PA6 crystallization temperature and product

It can be seen from Table 1 that the crystallization temperature of PA6 is significantly higher than that of bis-[4-tert-butylbenzene added alone when the bis-[4-tert-butylbenzoic acid] hydroxyaluminum and vinyl bis-hard amide are combined. Formic acid] hydroxyaluminum, in the heterogeneous nucleation process of PA6, played a significant synergistic effect, and the release properties were also significantly improved; further, the results show that when the ratio of the two is 1:1, The best results.

Table 2 bis-[4-tert-butylbenzoic acid] hydroxyaluminum, vinyl bis-hard amide and hydrated magnesium silicate on the crystallization temperature of PA6 and the release effect of the product

The ternary composition shown in Table 2 was identical to the binary test conditions of Table 1, and the results showed that hydration was further added on the basis of bis-[4-tert-butylbenzoic acid] hydroxyaluminum and vinyl bis-hard amide. After the magnesium silicate, the crystallization temperature is further increased, and accordingly, the mechanical properties of the article are further improved.

2. Perform bending modulus test, impact strength test, heat distortion temperature test

The nylon particles 1-4 prepared in the above application examples, the nylon particle control sample, and the nylon nucleating agents P22 and CAV102 currently on the market were respectively injection molded into standard splines at an injection temperature of 270 °C. The flexural modulus, impact strength, and heat distortion temperature were tested as follows.

The PET particles 1-4 and the PET particle control samples prepared in the above application examples were respectively injection molded into standard splines at an injection temperature of 280 °C. The flexural modulus, impact strength, and heat distortion temperature were tested as follows.

The PBT particles 1-4 and the PBT particle control samples prepared in the above application examples were respectively injection molded into standard splines at an injection temperature of 250 °C. The flexural modulus, impact strength, and heat distortion temperature were tested as follows.

The nucleating agent modified nylon is tested according to GB 2918-1998 (standard environment for plastic sample state adjustment and testing), at (23 ± 2) ° C, relative humidity (RH) is (50 ± 5)% The sample state adjustment time was 48 h. Physical performance tests were carried out according to national standards: cantilever beam notched impact strength standard GB/T 1843-1996, flexural modulus implementation standard GB/T9341-2000, heat distortion temperature implementation standard GB/T 1634-2004. The test results are listed in Table 3-5 below:

Table 3 Various properties of the nucleating agent modified PA6 (M2000) of the present invention

sample	Impact strength / kJ / m 2	Flexural modulus / MPa	Heat distortion temperature / ° C (1.8MPa)
Nylon particles 1	6.58	2987.52	60.3
Nylon particles 2	6.52	2968.43	60.1
Nylon particles 3	6.56	2976.39	60.2
Nylon particles 4	6.53	2956.29	60.0
Nylon particles 5	6.70	2990.35	60.5
Nylon particles 6	6.69	3015.78	62.1
Nylon particles 7	6.71	3028.93	62.5
Nylon particles 8	6.64	2958.23	59.9
Nylon particles 9	6.60	2921.65	59.7
Nylon particles 10	6.48	2955.78	59.8
Nylon particles 11	6.50	2918.68	59.6
Nylon particles 12	6.59	2968.13	60.1
Nylon particles 13	6.63	2990.35	61.5

Nylon particles 14	6.68	3004.23	61.9
Nylon particle control sample	6.48	2730.82	54.1
Nylon particles P22	6.50	2965.21	59.9
Nylon particle CAV102	6.50	2,968.84	59.9

As can be seen from Table 3, compared with the blank control and the conventional P22 and CAV102 on the market, the nylon particles 1-14 prepared by using the nucleating agent 1-7 of the present invention have a flexural modulus, an impact strength, and a heat distortion temperature. The apparent effect is better, and the improvement of the flexural modulus greatly improves the rigidity of the product. In the case of nylon particles 1-14 itself, wherein the ratio of bis-[4-tert-butylbenzoic acid]hydroxyaluminum and vinylbis-hard amide in the nucleating agent is 1:1 nylon particles 5 and 12, di-[ The ratio of 4-tert-butylbenzoic acid]hydroxyaluminum, vinylbis-hard amide and hydrated magnesium silicate in the ratio of 1:1:2 nylon particles 7 and 14 is optimal; and contains ternary nucleation The properties of the nylon particles 6-7, 13-14 of the agent are better than the PET particles 1-5, 8-12 of the binary nucleating agent.

Table 4 Various properties of the nucleating agent modified PET of the present invention

sample	Impact strength / kJ / m 2	Flexural modulus / MPa	Heat distortion temperature / ° C (0.45MPa)
PET pellet 1	4.36	2650.43	77.2
PET pellet 2	4.30	2693.25	77.7
PET particles 3	4.30	2681.28	77.5
PET particles 4	4.28	2691.91	77.6
PET particles 5	4.30	2696.06	77.7
PET particles 6	4.38	2801.19	78.7
PET particles 7	4.36	2894.03	79.1
PET particles 8	4.35	2625.13	77.0
PET particles 9	4.32	2648.34	77.4
PET particles 10	4.36	2633.61	77.1
PET particles 11	4.33	2,652.38	77.6
PET particles 12	4.31	2655.24	77.7
PET particles 13	4.32	2838.01	78.9
PET particles 14	4.38	2851.02	78.9
PET particle control sample	4.06	2578.36	75.8

As can be seen from Table 4, the PET particles 1-14 prepared by using the nucleating agent 1-7 of the present invention have a markedly superior effect on the flexural modulus, the impact strength, and the heat distortion temperature as compared with the blank control. The improvement in flexural modulus greatly increases the rigidity of the article. In the case of PET particles 1-14 itself, wherein the ratio of bis-[4-tert-butylbenzoic acid]hydroxyaluminum and vinyl bis-carbamide in the nucleating agent is 1:1 PET particles 5 and 12, di-[ The ratio of 4-tert-butylbenzoic acid]hydroxyaluminum, vinyl bis-carbamide and hydrated magnesium silicate in the ratio of 1:1:2 PET particles 7 and 14 is optimal and contains ternary nucleation. Properties of PET particles 6-7, 13-14 More preferably, the PET particles 1-5, 8-12 than the binary nucleating agent.

Table 5 Various properties of the nucleating agent modified PBT of the present invention

sample	Impact strength / kJ / m 2	Flexural modulus / MPa	Heat distortion temperature / ° C (1.8MPa)
PBT particles 1	5.06	2726.64	54.5
PBT particles 2	5.07	2,776.59	54.9
PBT particles 3	5.03	2732.84	54.6
PBT particles 4	5.02	2764.66	54.8
PBT particles 5	5.09	2778.87	54.9
PBT particles 6	5.07	2860.44	56.0
PBT particles 7	5.12	2862.85	56.2
PBT particles 8	5.00	2726.03	54.5
PBT particles 9	5.12	2,741.23	54.7
PBT particles 10	5.20	2736.07	54.6
PBT particles 11	5.11	2,775.22	55.0
PBT particles 12	5.13	2,796.22	55.3
PBT particles 13	5.12	2826.61	56.2
PBT particles 14	5.15	2832.65	56.4
PBT particle control sample	5.26	2699.06	53.1

As can be seen from Table 5, the PBT particles 1-14 prepared by using the nucleating agent 1-7 of the present invention have a markedly superior effect on the flexural modulus, the impact strength, and the heat distortion temperature as compared with the blank control. The improvement in flexural modulus greatly increases the rigidity of the article. In the case of PBT particles 1-14 itself, PBT particles 5 and 12, bis-[in which the ratio of bis-[4-tert-butylbenzoic acid] hydroxyaluminum and vinyl bis-carbamide in the nucleating agent is 1:1 The ratio of 4-tert-butylbenzoic acid]hydroxyaluminum, vinylbis-hard amide and hydrated magnesium silicate in the ratio of 1:1:2 PBT particles 7 and 14 is optimal and contains ternary nucleation. The performance of the PBT particles 6-7, 13-14 of the agent is better than that of the PET particles 1-5, 8-12 of the binary nucleating agent.

A rigid nucleating agent composition containing vinyl bis-hard amide of the present invention has been described by a specific example, and those skilled in the art can refer to the content of the present invention and appropriately change the raw materials, process conditions and the like to achieve corresponding It is to be understood that other changes and modifications may be made without departing from the scope of the invention.

Claims (12)

1. A nucleating nucleating agent composition containing vinyl bis-hard amide, characterized in that the nucleating agent composition contains bis-[4-tert-butylbenzoic acid] hydroxy aluminum and vinyl bis-hard amide The weight ratio of the two is 5:1 to 1:5.
2. The nucleating agent composition according to claim 1, wherein the weight ratio of bis-[4-tert-butylbenzoic acid] hydroxyaluminum to vinyl bis-carbamide is from 3:1 to 1:3. .
3. The nucleating nucleating agent composition according to claim 1, wherein the weight ratio of bis-[4-tert-butylbenzoic acid] hydroxyaluminum to vinyl bis-carbamide is 1:1.
4. The nucleating agent composition according to claim 1, wherein said nucleating agent composition contains bis-[4-tert-butylbenzoic acid] hydroxyaluminum, vinyl bis-hard amide, and hydrated silicon. Magnesium oxide, the weight ratio of the three is 1-3:1-3:1-5.
5. The nucleating agent composition according to claim 4, wherein the nucleating agent composition contains bis-[4-tert-butylbenzoic acid] hydroxyaluminum, vinyl bis-hard amide, and hydrated silicon. Magnesium oxide, the weight ratio of the three is 1-2:1-2:1-4.
6. The nucleating agent composition according to claim 4, wherein the nucleating agent composition contains bis-[4-tert-butylbenzoic acid] hydroxyaluminum, vinyl bis-hard amide, and hydrated silicon. Magnesium oxide, the weight ratio of the three is 1:1:2.
7. Use of a reinforced nucleating agent composition according to any one of claims 1 to 6 in a thermoplastic.
8. Use of the reinforced nucleating agent composition according to any one of claims 1 to 6 in PET, PBT and nylon.
9. The use of the rigid nucleating agent composition for improving the impact strength, flexural modulus, and mold release properties of PET, PBT, and nylon according to the application of claim 8.
10. A thermoplastic comprising the nucleating agent composition of any one of claims 1 to 6 and a thermoplastic, wherein the weight of the nucleating agent composition is from 0.01 to 2.00% by weight of the thermoplastic. The thermoplastic is PET, PBT or nylon.
11. The thermoplastic of claim 10 wherein the nucleating agent composition comprises from 0.05% to 1.00% by weight of the thermoplastic.
12. The thermoplastic of claim 10 wherein the weight of the nucleating agent composition is thermoplastic The weight of the plastic is 0.05-0.15%.