| Patent Number |
Title Of Patent |
Date Issued |
| 5519068 |
Method of producing open cell rigid polyurethane foam |
May 21, 1996 |
| There is provided a method of producing an open cell rigid polyurethane foam which comprises reacting a specified polyol mixture by use of water as the substantially sole blowing agent without the use of a volatile hlorofluorocarbon as a blowing agent. There is provided a further method |
| 5367050 |
Polyether polyol production of a flexible urethane foam and shaped article therefrom |
November 22, 1994 |
| A polyether polyol produced by using an N-amino-ethylpiperazine-ethylene oxide aduct as an initiator and addition-polymerizing an alkylene oxide thereto and having a molecular weight of about 2000 to 7000; a process for producing a flexible urethane foam starting with the above polyether |
| 5332764 |
Polyether polyol production of a flexible urethane foam and shaped article therefrom |
July 26, 1994 |
| A polyether polyol produced by using an N-aminoethylpiperazine-ethylene oxide aduct as an initiator and addition-polymerizing an alkylene oxide thereto and having a molecular weight of about 2000 to 7000; a process for producing a flexible urethane foam starting with the above polyether |
| 5318997 |
Method for production of open cell rigid polyurethane foam |
June 7, 1994 |
| A method of producing an open cell rigid polyurethane foam which comprises reacting a mixture of polyols having a hydroxyl value of 160-360 mg KOH/g with a polyisocyanate in the presence of water as a blowing agent in an amount of 6-12 parts by weight in relation to 100 parts by weight o |
| 5112876 |
Polyether polyol and rigid polyurethane foam |
May 12, 1992 |
| The present invention relates to a polyether polyol which is prepared by(i) reacting 3.0 to 4.0 molecular equivalents of ethylene oxide with one molecular equivalent of 2,3- or 3,4-tolylenediamine, or a mixture thereof in the absense of catalyst, and thereafter,(ii) reacting 2.8 to 4.8 molec |
| 5091438 |
Method of producing rigid urethane foam |
February 25, 1992 |
| A method of producing a rigid urethane foam, which comprises reacting a blend polyol consisting of a polyol having a hydroxyl value of 300 to 450 mg KOH/g as prepared by using an acyclic sugar alcohol of 5 to 6 carbon atoms as an initiator and one or more other polyols, said blend polyol |
| 4649163 |
Flame-retardant polyurethane foam and polyol composition therefor |
March 10, 1987 |
| A polyol composition comprising(a) a polyether polyol with an average molecular weight of 2,000 to 10,000,(b) an adduct of a carboxylic acid having not less than 8 carbon atoms with ethylene oxide or both ethylene oxide and propylene oxide and(c) a diol with an average molecular weight of 62 to |
| 4032574 |
Production of polyetherpolyols useful in preparing rigid polyurethane foams |
June 28, 1977 |
| Polyetherpolyols useful in preparing rigid polyurethane foam excellent in dimensional stability and inflammability. These polyetherpolyols are obtained by reacting alkylene oxide with compounds containing active hydrogen atoms, part or all of which comprise the reaction product obtai |
