Double metal cyanide catalyst for the production of polyether polyols and a process thereof

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United States of America Patent

PATENT NO 11898007
APP PUB NO 20220259374A1
SERIAL NO

17669892

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The present invention discloses a Double Metal Cyanide (DMC) catalyst(s) useful for the production of polyether polyols (PEPO) and a less energy intensive room temperature method for the synthesis thereof. The catalyst(s) comprises of a DMC complex, an organic complexing agent, i.e., ethylenediaminetetraacetic acid (EDTA) and other co-complexing organic agents, e.g., t-BuOH, PEPO of composition ranging from about 1 to 10 wt %, wherein the average molecular weight of PEPO used ranged from 200 to 1000. A method of preparing a series of DMC catalyst(s) at room temperature with varying compositional ratios of the complexing and co-complexing agents targeting a wide range of PEPO of varying kinematic viscosity range is also disclosed. These DMC catalyst(s) are amorphous, highly active, and easily separable from product PEPO with recyclability/recoverability, making the product PEPO better industrially applicable and DMC catalyst more cost-effective.

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Patent Owner(s)

Patent OwnerAddress
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHANUSANDHAN BHAWAN 2 RAFI MARG NEW DELHI 110001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ganguly, Sudip Kumar Dehradun, IN 6 0
Kumar, Thangaraj Senthil Dehradun, IN 1 0
Kumar, Umesh Dehradun, IN 21 127
Ray, Anjan Dehradun, IN 25 55
Sharma, Bhawna Dehradun, IN 3 0
Swati, null Dehradun, IN 3 3
Verma, Akash Dehradun, IN 10 13

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