US 8,784,680 B2Granted

Bioresin composition for use in forming a rigid polyurethane foam article

AssigneeBASF SE

InventorsChristopher M. Tanguay, Patrick J. Watters, John P. Erickson, Eric W. Banks

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Abstract

A bioresin composition is used to form a rigid polyurethane article that includes a first and a second biopolyol and is substantially free of aprotic solvents that chemically decompose in the presence of water. The first biopolyol includes a natural oil component. The second biopolyol includes the reaction product of a natural carbohydrate and an alkylene oxide. The rigid polyurethane foam article includes the reaction product of the bioresin composition and an isocyanate which are reacted in the presence of a chemical blowing agent.

Claims17

Dependent claims

A bioresin composition substantially free of aprotic solvents that chemically decompose in the presence of water, said bioresin composition comprising:

(A) a first biopolyol comprising a natural oil component, said first biopolyol having:
(a) a nominal functionality of at least 2.5,
(b) a hydroxyl number of from about 375 to about 575 mg KOH/g, and
(c) a viscosity of from about 500 cps to about 1500 cps at 77° F.,
(B) a second biopolyol comprising the reaction product of a natural carbohydrate and an alkylene oxide,
wherein said second biopolyol and said first biopolyol are present in a weight ratio of greater than 1:1 to about 3:1, and
(C) an aprotic solvent that does not chemically decompose in the presence of water.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/899,202Filed 21 May 2013 · division
Priority: 11 Jun 2009
Published: US 2013/0248759 A126 Sep 2013
Granted: 22 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

C08G 18/3203
Polyhydroxy compounds; Polyamines; Hydroxyamines: polyhydroxy compounds
C08G 18/3218
Polyhydroxy compounds: containing cyclic groups having at least one oxygen atom in the ring
C08G 18/36
Low-molecular-weight compounds: hydroxylated esters of higher fatty acids
C08G 18/6696
Compounds of group C08G18/48 or C08G18/52: with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38

Family

Application61/186,288Us provisional application · filed 11 Jun 2009
Application12/796,737Parent of this division · filed 9 Jun 2010
US 2013/0248759 A1Pre-grant publication · published 26 Sep 2013
US 8,476,329 B2Parent of this division
US 2010/0317760 A1Published application
US 8,784,680 B2This patent

From the US filing history. Foreign family members aren’t listed.

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