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Composition providing polymer with inoxidizability and application thereof

An antioxidant, composition technology, applied in the direction of chemical characteristics of fibers, single-component polyolefin rayon, textiles and papermaking, etc. Problems such as broken wires are prone to occur

Active Publication Date: 2018-09-25
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the amount of powder antioxidant is too much, it will crystallize out during the spinning process and form particles, which will cause knots in the spinning and easily break the yarn, which will affect the spinning quality.
In addition, in the prior art, the antioxidant is usually added to the powder polymer in the form of powder, and the polymer mixed with the antioxidant is obtained in the form of twin-screw extrusion. The uniformity of dispersion in

Method used

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  • Composition providing polymer with inoxidizability and application thereof
  • Composition providing polymer with inoxidizability and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Mix 2,6-di-tert-butyl-4-methylphenol, hydroxylamine and trinonylphenol phosphite in a mass ratio of 17%: 17%: 66%, and stir evenly under heating at 80 °C to obtain a uniform liquid combination Add the homogeneous liquid composition to the white oil at 140°C (the addition amount of the liquid composition accounts for 1 wt% of the polymer system), after stirring evenly, add polyethylene at 140°C (the content of polyethylene is 2.3 wt % of white oil), stirring and dissolving, that is, a modified polymer mixture system was prepared, and its viscosity was measured.

[0062] After 2h, the viscosity showed a downward trend, and the viscosity value decreased from 4000cP to 3800cP.

[0063] The modified polymer mixture system did not crystallize during the spinning process, indicating that the composition of the present invention significantly improves the spinning quality of the polymer after it is applied to the polymer.

Embodiment 2～16

[0065] The mixing method in the polymer mixture system is the same as that in Example 1. In Examples 2 to 16, only the components, proportions and amounts of polymers and compositions are different from those in Example 1. The specific values ​​are listed in Table 1.

[0066] Table 1 Experimental data of Examples 1-16

[0067]

[0068] The data of Examples 1-16 show that, using the liquid mixing method of the present invention, adding the antioxidant composition into the mixing system can significantly improve the oxidation resistance of the polymer. And the modified polymer did not crystallize during the spinning process, indicating that the composition of the present invention significantly improves the spinning quality of the polymer after it is applied to the polymer.

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Abstract

The invention provides a liquid composition providing a polymer with inoxidizability and application thereof. The composition comprises the following components: (1) hindered phenol and / or (2) phosphite or thioester, and (3) an amine antioxidant. The composition has antioxidant properties, is in a liquid state at a temperature of 30 to -10 DEG C, and is added into a polymer to be provided with inoxidizability in the liquid state. The liquid composition can be used as an antioxidant, especially as an antioxidant in polymer resin. The invention also provides a polymer mixture system having oxidation resistance. In the system, the antioxidant composition for providing the polymer with inoxidizability is added into the mixture system, and the integral system is a homogeneous solution. Throughintroduction of the antioxidant in such a manner, the problem of oxidation of polymers during processing is overcome, and an excess amount of the antioxidant composition does not crystallize during the spinning of polymers, which allows the spinning quality of the polymers to be significantly improved.

Description

technical field [0001] The invention relates to a liquid composition, in particular to a composition providing antioxidant properties for polymers and applications thereof, and belongs to the technical field of antioxidant compositions. Background technique [0002] During thermal processing and use, polymers are often formulated into concentrated solutions, mainly for spinning. However, during the spinning process, the polymer is susceptible to light and heat, and will be oxidized by oxygen in the air, resulting in the loss of the mechanical properties of the polymer. Therefore, it is necessary to add antioxidants to improve the oxidation resistance of the polymer. Antioxidants exist in many forms. Among them, powder antioxidants are widely used in polymer spinning processing to reduce thermo-oxidative aging in polymer processing and prolong the service life of polymers. However, if the amount of powder antioxidant is too much, it will crystallize and form particles during...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08K5/13C08K5/17C08K5/524C08K5/18C08K5/526C08K5/134D01F6/46D01F1/10
CPCC08K5/13C08K5/1345C08K5/17C08K5/18C08K5/524C08K5/526C08L2201/08D01F1/10D01F6/46C08L23/06C08L23/12
Inventor 李化毅张瑜刘金凤李倩徐坚孙同兵朱才镇赵宁
Owner INST OF CHEM CHINESE ACAD OF SCI
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