Patent EP0149795A1 successfully refreshed from Google Patents.
EP0149795A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polyoxyalkylene polyether polyols and polyurethane foams prepared therefrom
Assignee: BASF Corp
•
Filing: 1984-12-13
•
Granted: —
•
Expires: 2004-12-13
Abstract
Abstract The invention relates to polyols prepared by reacting ethylene oxide with an initiator followed by additional alkylene oxide. The ethylene oxide blocks at the initiator ranges from 1 to 30 weight percent based on the weight of the polyol. Polyurethane foams prepared from these polyols exhibit good air flow and improved load bearing properties.
Inventors
- 👤 Robert John Hartman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 19:50
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4845; C08G18/4866; C08G2110/00; C08G2110/0008; C08G2110/0041; C08G2110/005; C08G2110/0083; Y; Y10; Y10S; Y10S521/00; Y10S521/914
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
A polyoxyalkylene polyether polyol having a hydroxyl number of about 20 to 200 and functionality of 2.5 to 8 comprising (a) an organic initiator compound having from 2 to 8 active hydrogen groups and 2 to 12 carbon atoms and an equivalent weight ranging from about 30 to about 50. (b) an ethylene oxide adduct adjacent to the initiator comprising from 1 to 30 weight percent based on the total weight of the polyol, and (c) a subsequent alkylene oxide adduct selected from the group consisting of propylene oxide, butylene oxide and a heteric mixture of ethylene oxide and propylene oxide provided that the ethylene oxide content does not exceed 30 weight percent based on the weight of the polyol and further provided that when the heteric mixture is employed a further addition of propylene oxide is made.
Claim 2
Dependent Claim
138 words
A polyoxyalkylene polyether polyol having a hydroxyl number of about 20 to 200 and functionality of 2.5 to 8 comprising (a) an organic initiator compound having from 2 to 8 active hydrogen groups and 2 to 12 carbon atoms and an equivalent weight ranging from about 30 to about 50. (b) an ethylene oxide adduct adjacent to the initiator comprising from 1 to 30 weight percent based on the total weight of the polyol, and (c) a subsequent alkylene oxide adduct selected from the group consisting of propylene oxide, butylene oxide and a heteric mixture of ethylene oxide and propylene oxide provided that the ethylene oxide content does not exceed 30 weight percent based on the weight of the polyol and further provided that when the heteric mixture is employed a further addition of propylene oxide is made.
Claim 3
Dependent Claim
20 words
The polyol of claim 1 wherein the initiator is selected from the group consisting of propylene glycol, glycerine, and trimethylolpropane.
Claim 4
Dependent Claim
30 words
The polyol of claim 1 wherein the concentration of ethylene oxide at the initiator ranges from about 5 to about 15 weight percent based on the weight of the polyol.
Claim 5
Dependent Claim
126 words
A process for the preparation of a polyoxyalkylene polyether polyol having a hydroxyl number of about 20 to 200 and functionalities of 2.5 to 8 comprising the steps of reacting (a) an organic initiator compound having from 2 to 8 active hydrogen groups, 2 to 12 carbon atoms and an equivalent weight ranging from 30 to 50, (b) ethylene oxide in an amount from 1 to 20 weight percent based on the total weight of the polyol, and (c) alkylene oxide selected from the group consisting of propylene oxide, butylene oxide and a mixture of ethylene oxide and propylene oxide provided that the total ethylene oxide content does not exceed 30 weight percent based on the weight of the polyol, in the presence of a catalyst.
Claim 6
Dependent Claim
126 words
A process for the preparation of a polyoxyalkylene polyether polyol having a hydroxyl number of about 20 to 200 and functionalities of 2.5 to 8 comprising the steps of reacting (a) an organic initiator compound having from 2 to 8 active hydrogen groups, 2 to 12 carbon atoms and an equivalent weight ranging from 30 to 50, (b) ethylene oxide in an amount from 1 to 20 weight percent based on the total weight of the polyol, and (c) alkylene oxide selected from the group consisting of propylene oxide, butylene oxide and a mixture of ethylene oxide and propylene oxide provided that the total ethylene oxide content does not exceed 30 weight percent based on the weight of the polyol, in the presence of a catalyst.
Claim 7
Dependent Claim
20 words
The process of claim 4 wherein the initiator is selected from the group consisting of propylene glycol, glycerine, and trimethylolpropane.
Claim 8
Dependent Claim
32 words
The process of claim 4 wherein the concentra - tion of ethylene oxide at the initiator ranges from about 5 to about 15 weight percent based on the weight of the polyol.
Claim 9
Dependent Claim
18 words
A flexible polyurethane foam prepared by reacting an organic polyisocyanate with the polyoxyalkylene polyether polyol of claim 1.
Claim 10
Dependent Claim
18 words
A flexible polyurethane foam prepared by reacting an organic polyisocyanate with the polyoxyalkylene polyether polyol of claim 2.
Claim 11
Dependent Claim
18 words
A flexible polyurethane foam prepared by reacting an organic polyisocyanate with the polyoxyalkylene polyether polyol of claim 3.
References Cited (Backward Citations)
GB1025242A
Cited
DE1569109A1
Cited
US3457203A
Cited
US4008189A
Cited
US4239907A
Cited
EP0017928A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.