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Gas generating agent, foaming composition, foam, and method for producing foam

A technology of gas generating agent and manufacturing method, which is applied in chemical instruments and methods, generation of compressed gas, and other chemical processes, and can solve problems such as mold pollution, increased dosage, and corrosiveness

Inactive Publication Date: 2021-10-19
EIWA CHEM INDAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, ADCA has the following technical problems: a small amount of ammonia gas is contained in the generated gas during foaming, and the ammonia gas is corrosive; hydrocyanic acid, which is a decomposition product of ADCA, has sublimation properties, and after sublimation, it polymerizes and becomes corrosive. Proactive cyanuric acid, which easily becomes the cause of mold contamination; etc. (for example, refer to Patent Document 1 and Non-Patent Document 1)
However, the amount of gas generated by OBSH is as low as 120mL / g, and it is necessary to increase the amount of addition in order to obtain the desired expansion ratio, which is problematic in terms of economy and resource saving.

Method used

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  • Gas generating agent, foaming composition, foam, and method for producing foam
  • Gas generating agent, foaming composition, foam, and method for producing foam
  • Gas generating agent, foaming composition, foam, and method for producing foam

Examples

Experimental program
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Effect test

Embodiment

[0075] Hereinafter, the present invention will be described more specifically, the present invention is not limited by this embodiment.

[0076] In the examples and comparative examples shown below, the structure of the compound used in the gas generating agent is determined by CHN element analysis and melting point as long as it is not particularly limited. Further, the decomposition start temperature of the gas generator, the amount of gas volume and the amount of ammonia were evaluated by the amount of gas generating agent and the amount of ammonia.

[0077]

[0078] With regard to the decomposition of the gas generator, a different heat-thermal weight simultaneous measuring device (Exstar6000 manufactured by SIINANOTECHNOLOGY) was used at atmospheric, and 25 ° C was set to start temperature, and the measurement was carried out at 10 ° C / min. The decomposition start temperature is temperature when the weight is reduced by 5% relative to the start of the temperature.

[0079]...

Synthetic example 1

[0083] (Synthesis Example 1) Synthesis of Guanidine Derivatives (1)

[0084]

[0085] After adding 400 ml of Solar-shaped flask (S. Then, a small amount of oxalate dihydrate (300 mmol) was 37.82 g (300 mmol), stirred until foaming. Thereafter, the slurry was heated to 100 ° C heating and stirring was stirred for 2 hours. The precipitated white solid was filtered, after washing with distilled water, dried at 50 ° C for 18 hours to give a white solid 26.81 g (183.63 mmol). Element analysis of Element CHN element analyzer MT-6 (YANACO Analyze Industrial Co., Ltd.) was used for the obtained solid using carbon nitrogen, and the result is that the calculated value is C: 24.66, H: 4.14, N: 38.35; The measured value was C: 24.39, H: 4.24, N: 38.01; confirmed that the compound represented by the formula (1) was confirmed. The molar yield is 61%. Further, the melting point was measured using a melting point meter MPA100 (Stanford Research Systems) for the resulting solid, and the result w...

Embodiment 1

[0090] The decomposition start temperature and gas volume of the guanidine derivative (1) obtained in Synthesis Example 1 were determined. The result is shown in Table 1.

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Abstract

The present invention addresses the problem of providing a gas generating agent that has an appropriate decomposition starting temperature and generates a large amount of gas and only a small amount of ammonia gas. The problem can be solved by a gas generating agent containing a guanidine derivative represented by formula (1).

Description

Technical field [0001] The present invention relates to a gas generating agent, a foaming composition, a foam body, and a method of manufacturing a foam. Background technique [0002] As a representative gas generating agent (hereinafter also referred to as "ADCA".) Is a compound for a wide range of use as a plastic, rubber integral chemical blowing agent. [0003] As the advantage of ADCA, it can be accumulated that the amount of gas volume is as much than 200 ml / g above, and the decomposition start temperature is 200 ~ 210 ° C, which is relatively high, but by using the foaming aid, It is possible to reduce the decomposition start temperature to 140 ° C; can spread in a general purpose plastic (e.g., thermoplastic resin) and rubber; generating gas is a main component of nitrogen, has self-extinguishing property, high safety; etc. [0004] On the other hand, the ADCA has a technical problem: a small amount of ammonia gas is generated in the generating gas during foaming; the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06D5/00C09K3/00C08J9/06
CPCC06D5/00C08J9/10C08J2203/04C08J2323/06C08J2201/026C08J2323/16C08K5/31C08K9/10C06D5/04C08J2301/00C08J2321/00C08J9/101C08J2300/22C08J9/104
Inventor 中田和也内山润哉上等和良影山拓哉
Owner EIWA CHEM INDAL