Dow Global Technolgoies LLC

Lucie Porcelli

Paul A Cookson

Francois M Casati

Anja Arlt

Jean-Paul Masy

Ricco B Borella

Qinghao Meng

Hamideh Ahmadloo

David J Honkomp

Meagan Broadway

Morgan A Springs

David Foix Tajuelo

William L Ritter

Very soft, launderable polyurethane foams for pillow and other bedding applications are made using a quasi-prepolymer of diphenylmethane diisocyanate and a polyether polyol having a high oxyethylene content. The quasi-prepolymer is reacted with isocyanate-reactive components that include a certain monoalcohol but is devoid of or nearly devoid of a polyether polyol having a high oxyethylene content.

Soft, washable polyurethane foam with slow recovery time

Embodiments of the present disclosure are directed towards formulated polyol compositions that include a first polyether polyol having an average hydroxyl number from 112 to 280 mg KOH/g, a second polyether polyol having an average hydroxyl number from 18.5 to 51 mg KOH/g, a third polyether polyol having an average hydroxyl number from 20 to 70 mg KOH/g, and at least one of: fourth polyether polyol having an average hydroxyl number from 112 to 280 mg KOH/g; and a methoxypolyethylene glycol having an average hydroxyl number from 56 to 190 mg KOH/g.

Formulated polyol compositions

A method of forming a flexible polyurethane foam that passes BS 5852:2006 source V (Crib 5) test. The method includes providing a modified polyisocyanate polyaddition (PIPA) 5 polyol formed by contacting a PIPA polyol dispersion with at least one carboxylic acid having a melting point above zero degree Celsius and present in a carrier solvent. The PIPA polyol dispersion has a polyol liquid phase content of 60 wt. % to 90 wt. % and a solid particle phase content of 10 wt. % to 40 wt. % based on a total weight of the PIPA polyol dispersion. From 10 weight percent (wt. %) to 80 wt. % of the modified PIPA polyol is combined with 90 wt. % to 20 10 wt. % of at least another polyether polyol based on a total weight of a polyol blend of the PIPA polyol and the at least another polyether polyol, where the polyether polyol is formed with propylene oxide and ethylene oxide and has an equivalent weight of 1,000 to 2,000 and a functionality of 3 to 6. The combination of the modified PIPA polyol and the polyether polyol are reacted with a polyisocyanate and a blowing agent to form the flexible polyurethane foam.

Reduced flammability flexible polyurethane foam

A polyol composition is made by polymerizing a mixture of ethylene oxide and propylene oxide onto a mixture of at least one diol initiator and at least one triol initiator, followed by polymerizing 100% propylene oxide or a mixture of at least 90 weight percent propylene oxide and at most 10 weight percent ethylene oxide. The resulting polyol composition has a hydroxyl equivalent weight of 200 to 400 and an average nominal functionality of 2.05 to 2.95 hydroxyl groups/molecule. 5 to 30 percent of the hydroxyl groups of the coinitiated polyether polyol are primary hydroxyl groups and polymerized ethylene oxide constitutes 40 to 63 percent of the total weight of the coinitiated polyether polyol.

Polyol blends useful for producing viscoelastic foam

Flexible polyurethane foams are made by reacting a polyether mixture and water with a polyisocyanate. The foams have excellent suite of properties for use in seating applications, as they are supporting, comfortable and resilient foam. A further advantage is these properties can be obtained at isocyanate indices of close to or even greater than 100.

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Richterswil, Switzerland

Lucie Porcelli