A kind of surfactant for preparing slow-resilient polyurethane foam and preparation process thereof

A surfactant and polyurethane foam technology, which is applied in the field of surfactants in the fine chemical industry, can solve the problems of poor rebound performance, uneven cell structure, and poor foam feel, and achieve stable foam and uniform Fine cell structure, the effect of improving the cell structure

Active Publication Date: 2018-10-19
苏州思德新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the slow rebound properties of the slow rebound polyurethane foam caused by organosilicon surfactants in the prior art, and the cell structure is uneven, and the defects of poor foam feel are provided. A formulation and preparation process of a high-performance silicone surfactant specially used in the production of slow-rebound polyurethane foam

Method used

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  • A kind of surfactant for preparing slow-resilient polyurethane foam and preparation process thereof
  • A kind of surfactant for preparing slow-resilient polyurethane foam and preparation process thereof
  • A kind of surfactant for preparing slow-resilient polyurethane foam and preparation process thereof

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Embodiment

[0032] (1) Synthesis of propylene oxide and propylene oxide copolyether with allyl as the end group: add 1 to 10 parts by weight of allyl alcohol, 20 to 45 parts by weight of ethylene oxide and 50 ~70 parts by weight of propylene oxide, under the action of 0.1~0.5 parts by weight of basic catalyst, controlled reaction temperature 90°C~130°C, reaction pressure not greater than 0.5MPa, reacted for 4~6 hours, when the system pressure When the temperature is lowered to less than 0.15MPa, the temperature is lowered to stop the reaction. After neutralization, filtration and extraction, a ethylene oxide and propylene oxide containing allyl alcohol is obtained, with an allyl group at one end and a hydroxyl group at the other end. The polyether of the random copolymerization structure of the group.

[0033] Three polyether samples were synthesized according to this process, and the typical parameters of their molecular structures are as follows:

[0034] Table 1: Sample list of allyl-...

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Abstract

The invention provides a surfactant used in preparation of slow rebound polyurethane foam and a preparation technology of the surfactant. The preparation method comprises the following steps: synthetizing allyl-terminated copolyether with ethylene oxide and propylene oxide groups from allyl alcohol, epoxyethane and epoxypropare, then conducting end capping on allyl polyether, carrying out a grafting reaction between the allyl-terminated copolyether and hydrogen-containing silicone oil synthetized from dimethyl dichlorosilane and dichloromethylsilane, and finally adding glyceryl polyether. Due to the improvement in the aspect of the molecular structure, the foam structure of the slow rebound polyurethane foam can be effectively improved, the slow rebound mechanical property of the foam can be obviously improved, and the foam structure can be more uniform and fine. Therefore, the hand feeling is improved, and the use requirement on slow rebound foam of consumers can be met better.

Description

technical field [0001] The invention relates to a surfactant in the fine chemical industry, in particular to an organosilicon surfactant for preparing slow-rebound polyurethane foam and a preparation process thereof. Background technique [0002] Slow rebound polyurethane foam is commonly known as memory foam, slow rebound sponge, viscoelastic sponge or aerospace cotton. The main components of the foaming system of this type of slow resilience polyurethane foam include isocyanates such as toluene diisocyanate (TDI), polyether polyols, foaming agents, catalysts and silicone surfactants. Due to the complex production technology and high cost, slow rebound polyurethane foam is currently mainly used in the production of high-end mattresses, pillows and other household products that can provide special comfort, as well as the packaging of some valuable precision instruments and equipment that require special protection. Production. In these application fields, the polyurethane ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00C08G65/338C08G65/28C08G77/12C08L75/04C08L87/00
Inventor 王孝年林斌
Owner 苏州思德新材料科技有限公司
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