描述

4-Methylmorpholine N-oxide / N-methylmorpholine oxide CAS 7529-22-8

What is Sasolate® NMMO?

Sasolate® NMMO’s other name is 4-Methylmorpholine N-oxide. It is a metabolite of morpholine (M723725).

Sasolate® NMMO Usage

1. 4-Methylmorpholine N-oxide is usually used to dissolve cellulose and dissolve hard protein.

2. 4-Methylmorpholine N-oxide is used as a non-metallic catalyst for the silicidation of ketones.

3. 4-Methylmorpholine N-oxide is used as a co-oxidant for Sharpless asymmetric dihydroxylation in ionic liquids

Sasolate® NMMO Packaging and Shipping

Packing: 250kgs/drum.

交货期：5-7 个工作日。

Sasolate® NMMO storage

存放在阴凉干燥处，避免阳光直射。

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There are some differences between rigid and flexible polyurethane foam in the selection and use of catalyst:

1、催化剂的选择
Rigid foam:
Commonly used catalysts include organotin compounds such as organostannates and organostannic esters. These catalysts help to promote the polymerisation reaction of polyurethane and produce a harder foam structure.
软质泡沫：
Commonly used catalysts also include organostannic compounds, but may be more selective and in some cases more types of organostannic compounds may be used. These catalysts help to control the rate of polymerisation reaction of the polyurethane to produce a softer, more flexible foam structure.

2、反应速率和硬度控制
硬泡沫
催化剂的选择和用量可提高聚合反应速率，从而加快聚合速度，使泡沫在形成后更快地固化，形成更坚硬的泡沫结构。
软泡沫：
催化剂的选择和用量更侧重于控制聚合反应速率，以便在泡沫形成过程中保持一定的延展性和弹性，产生柔软、灵活的泡沫结构。

3、添加剂配方
硬质泡沫：
在制备硬质泡沫时，除催化剂外，还可添加填料和增稠剂，以调节泡沫的密度和硬度。
软质泡沫：
为了获得柔软舒适的泡沫，可以添加更多的表面活性剂、软化剂等来调节泡沫的柔软度和弹性。

总之，硬质泡沫和软质泡沫在催化剂和配方的选择上会有所不同，以追求不同的特性，从而调节聚氨酯泡沫的硬度、柔软度和其他特性，满足不同应用场景的需求。