Semi-batch process for producing polymer polyols

Details Semi-batch process for producing polymer polyols Semi-batch process for producing polymer polyols

1994-08-18

1996-01-30

Hamilton, III, Thomas

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525187, 525404, 525412, 525455, 525526, 525529, C08L 2512, C08L 7500

Patent

active

054880858

ABSTRACT:
Polymer polyols prepared by a semi-batch process using a small amount of a seed polymer polyol are disclosed. The final polymer polyol has a broader particle size distribution as compared to an identically prepared polymer polyol prepared in the absence of the seed polymer polyol. The polymer polyols are suitable for use in producing polyurethanes, particularly polyurethane foams.

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patent: 5059641 (1991-10-01), Hayes et al.
patent: 5196476 (1993-03-01), Simroth
patent: 5223570 (1993-06-01), Huang et al.

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