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Composite antioxidant for preventing or mitigating reddening of polyurethane soft foam and application thereof

A technology of polyurethane soft foam and composite antioxidant, applied in the field of polyurethane soft foam, can solve problems such as affecting the appearance of products and product sales, and achieve the effect of reducing the reddening of polyurethane soft foam

Inactive Publication Date: 2018-05-11
CHINA PETROCHEMICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the improvement of people's living standards and environmental protection awareness, higher and higher requirements are put forward for the smell and appearance of polyurethane soft foam products. In winter, especially in the environment with poor air quality, soft foam polyether poly After alcohol and polymer polyols are foamed, the color of the foam will gradually change from white to light red, which affects the appearance of the product and the sales of the product

Method used

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  • Composite antioxidant for preventing or mitigating reddening of polyurethane soft foam and application thereof
  • Composite antioxidant for preventing or mitigating reddening of polyurethane soft foam and application thereof
  • Composite antioxidant for preventing or mitigating reddening of polyurethane soft foam and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Compound Antioxidant Preparation

[0039] Antioxidant was prepared according to the formula in parts by weight in Table 1.

[0040] Preparation method: Mix the raw materials evenly according to the proportion.

[0041] Table 1

[0042]

1#

2#

3#

4#

5#

6#

7#

8#

A (parts by weight)

3000

2000

2000

500

2000

2000

0

2000

B (parts by weight)

1500

1000

1000

1000

1000

500

3000

500

C (parts by weight)

1000

1000

500

500

0

1000

1000

2000

[0043] Polyurethane Synthesis and Anti-redness Properties

[0044] Take out GEP-560S (produced by Shanghai Gaoqiao Petrochemical) crude ether, put it into a glass kettle, add acid for neutralization for half an hour, add adsorbent for adsorption for one hour, vacuum dehydrate for two hours, then blow nitrogen for dehydration, and filter and refine. Weigh 1kg of refined ether GEP-560S without antioxidant in a beaker...

Embodiment 2

[0049] Compound Antioxidant Preparation

[0050] Antioxidant was prepared according to the formula in parts by weight in Table 3.

[0051] Preparation method: Mix the raw materials evenly according to the proportion.

[0052] table 3

[0053]

9#

10#

11#

12#

A (parts by weight)

3000

1000

1500

0

B (parts by weight)

1000

1000

1500

3000

C (parts by weight)

500

500

500

0

[0054] Polyurethane Synthesis and Anti-redness Properties

[0055] Take out GEP-560S (produced by Shanghai Gaoqiao Petrochemical) crude ether, put it into a glass kettle, add acid for neutralization for half an hour, add adsorbent for adsorption for one hour, vacuum dehydrate for two hours, then blow nitrogen for dehydration, and filter and refine. Weigh 1kg of refined ether GEP-560S without antioxidant in a beaker, and add the required antioxidant according to Table 4 [content of antioxidant in polyether polyol], or add the ...

Embodiment 3

[0060] Compound Antioxidant Preparation

[0061] Antioxidant was prepared according to the formula in parts by weight in Table 5.

[0062] Preparation method: Mix the raw materials evenly according to the proportion.

[0063] table 5

[0064]

13#

14#

15#

16#

17#

A (parts by weight)

3000

1000

1500

2000

500

B (parts by weight)

1000

1000

1500

1000

500

D (parts by weight)

500

500

500

1000

500

[0065] Polyurethane Synthesis and Anti-redness Properties

[0066] Take out GEP-560S (produced by Shanghai Gaoqiao Petrochemical) crude ether, put it into a glass kettle, add acid for neutralization for half an hour, add adsorbent for adsorption for one hour, vacuum dehydrate for two hours, then blow nitrogen for dehydration, and filter and refine. Weigh 1kg of refined ether GEP-560S without antioxidant in a beaker, and add the required antioxidant according to [content of antioxidant in pol...

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PUM

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Abstract

The present invention provides a composite antioxidant for preventing or mitigating reddening of polyurethane soft foam. The composite antioxidant includes 500-3000 parts by weight of a hindered phenol antioxidant, 500-3000 parts by weight of an amine antioxidant and 500-2000 parts by weight of a phosphite antioxidant. Suitable varieties and dosages are selected from different kinds of antioxidants, the antioxidants are synergic in effects, and the reddening of the polyurethane soft foam can be prevented or mitigated.

Description

technical field [0001] The invention belongs to the field of flexible polyurethane foams, and in particular relates to a composite antioxidant for preventing or alleviating reddening of polyurethane flexible foams and an application thereof. Background technique [0002] Polyurethane, also known as polyurethane formate, is a general term for macromolecular compounds containing repeated carbamate groups on the main chain. It is formed by addition polymerization of organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compound. In addition to carbamate, polyurethane macromolecules can also contain ether, ester, urea, biuret and other groups. The forms of polyurethane products include soft, semi-rigid and rigid foam plastics, elastomers, paint coatings, adhesives, sealants, synthetic leather coating resins, elastic fibers, etc. They are widely used in automobile manufacturing, refrigerator manufacturing, transportation , civil engineering, footwear, synthetic le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K5/134C08K5/18C08K5/524C08K5/526C08G101/00
CPCC08G18/48C08G2101/00C08K5/1345C08K5/18C08K5/524C08K5/526
Inventor 宋虹霞闫鸿敏邓爱华施晓秋
Owner CHINA PETROCHEMICAL CORP