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MDI for slow rebound  cushion
MDI for slow rebound  cushion

MDI for slow rebound cushion

  • Classification:Modified MDI
  • Release date:2020-09-14 16:32:08
24-hour free consultation hotline:18067350809
  • Product overview

The product is used for:

It produces polyurethane soft foam products with fine pore good handle.

Main ingredients:

Prepolymer of diphenylmethane diisocyanate

Product packaging:

Net weight 230 kg, red metal barrel

Storage method:

The unused raw materials should be stored in a well sealed barrel to avoid moisture intrusion affecting the quality of raw materials. The ideal storage temperature of raw material is 35 ± 5 ℃, the storage period of material B is 6 months.

Model parameters




1, MDI modified by carbodiimide is used to produce low density (up to 34kg / M 3) automobile cushions mattresses, which can be stored stably at low temperature. Here, the modified MDI prepolymer is prepared by the reaction of polymerized MDI polyether containing 14% ethylene oxide capped by ethylene oxide with molecular weight of 5000-10000 functionality of 4. Its NCO content is 28-32%, its viscosity is 100-400 MPa. S / 25 ℃ 。 A kind of

2, increasing the content of ethylene oxide in polyether can improve the foaming opening effect of Dow modified MDI, also improve the mold release performance of molded foam (4), which can save the release agent. The modified MDI is obtained by mixing 4,4-mdi with no less than 40% of 4,4-mdi, the other pure MDI which is isomeric homologue, two polyether polyether with 50-90% ethylene oxide content 25% ethylene oxide content. When NCO content is 15%, MDI modified by microcellular foaming material is mixed with liquefied MDI to form a low viscosity mixture with 29.5% NCO content. The molded foam has good high resilience. A kind of

3. The modified MDI with 29% NCO content 29% NCO content was obtained by reacting the mixture of 2300-3200 with 4,4-mdi content of 58%, 2.4-mdi content of 19% polymerized MDI content of 23%. The foam obtained by foaming has good elongation. 4. The modified MDI, which can be stored stably for more than 6 months at room temperature, is composed of pure MDI (containing 4,4 - 2,3,4- 2,3,3,4,4,2,3,4,4,4,2,4,4,4,2,4,4,4,4,2,4,4, 4- isomers, polymerized MDI carbonized two imines / ureas imine modified MDI mixtures of liquefied MDI were prepared polyether polyols with polypropylene oxide, functional 3 1500-10000 equivalent. The modified MDI with NCO content of 22-31% was produced by high pressure foaming machine, the elongation reached 150-170% good physical properties.


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