Patent application number | Description | Published |
20090149622 | Thermoplastic Polyurethane Containing Structural Units of Polyester and Polyether Diols - The present invention is a transparent thermoplastic polyurethane (TPU) comprising structural units of: a.) a diisocyanate; b.1) a polyester diol and b.2) a specific polyether diol and c.) a chain extender. The TPU has good combinations of light transmission and clarity, tensile strength, low temperature flexibility, and high moisture vapor transition rates compared to other commercial or known TPUs. A preferred example composition is a TPU that is based on MDI as the diisocyanate monomer, polycaprolactone as a polyester diol, an EO capped EO/PO polyether diol containing less than 20% EO, and butanediol as chain extender. These composition have good combinations of clarity, tensile strength, hydrolytic stability and processability compared to TPUs prepared using either polyester or polyether diols alone or the combination with a higher EO polyether diol. | 06-11-2009 |
20090197984 | Polymer polyols and polymer dispersions made from vegetable oil-based hydroxyl-containing materials - Polymer polyols and dispersions are prepared by polymerizing certain starting materials in a continuous phase. The continuous phase includes a polyol containing hydroxylmethyl groups, which is derived from a fatty acid. The dispersed phase may be, for example, a vinyl polymer, a polyurea or a polyurethane-urea. | 08-06-2009 |
20090264548 | Polyurethanes made from hydroxy-methyl containing fatty acids or alkyl esters of such fatty acids - Polyurethane polymers are made from a reaction mixture that contains a polyisocyanate, a hydroxylmethyl-containing fatty acid or ester, and another polyol, polyamine or aminoalcohol. The carboxylic acid or ester group on the hydroxymethyl-containing fatty acid or ester are capable of engaging in a variety of reactions with the polyisocyanate and/or amine or hydroxyl groups present in the reaction mixture. This allows for good quality, high molecular weight polymers to be produced even though the hydroxymethyl-containing fatty acid or ester tends to be a low functionality material. | 10-22-2009 |
20090281206 | COPOLYMER POLYOLS AND A PROCESS FOR THE PRODUCTION THEREOF - The present inventions disclosed copolymer polyol composition which have a polymer content of 40 to 75 weight percent, based on total weight, and product stability such that essentially 100 percent passes through a 150 mesh screen produced by a free radical polymerization of the composition comprising: (a) a feedstock polyol; (b) at least one ethylenically unsaturated monomer; (c) a free radical polymerization initiator; (d) a chain transfer agent; (e) optionally a preformed stabilizer; and (f) optionally a macromer; with the proviso that at least one of e) or f) is present; wherein the feedstock has a nominal average functionality of 1.5 to 2.7, an equivalent weight of 400 to 2000. Such copolymer polyols can be used for the production of polyurethane products. | 11-12-2009 |
20100286299 | NATURAL OIL BASED COPOLYMER POLYOLS AND POLYURETHANE PRODUCTS MADE THEREFROM - A polymer polyol composition of conventional petroleum-based polyols, natural oil derived polyols, PIPA and/or PHD particles made in the presence of natural oil derived polyols, and conventional petroleum-based polymer particles is provided. The polymer polyol composition may be used to form polyurethane foams. | 11-11-2010 |
20110213044 | Melt Dispersion Process for Making Polymer Polyols - Polystyrene is dispersed into a polyol via a mechanical dispersion process. A stabilizer is present to stabilize the dispersed polymer particles. The stabilizer includes a copolymer of (1) from 10 to 70% by weight of a branched polyol which has a molecular weight of from 4000 to 20,000, from 0.2 to about 1.2 polymerizable ethylenically unsaturated groups per molecule and from about 3 to about 8 hydroxyl groups per molecule with (2) from 30 to 90% by weight of styrene or a mixture of styrene and one or more other low molecular weight monomers. | 09-01-2011 |
20110218264 | MODIFIED NATURAL OILS AND PRODUCTS MADE THEREFROM - A modified natural oil made from reacting at least one natural oil or fat comprising at least one ene moiety with at least one of an enophile or dienophile mixture to form at least one modified natural oil, and reacting the at least one modified natural oil which may be used in a variety of processes. | 09-08-2011 |
20130035467 | HYBRID POLYESTER-POLYETHER POLYOLS - A process for preparing a hybrid polyester-polyether polyol comprises contacting a carboxyl group-containing component and an epoxide, optionally in the presence of one or more of a double metal cyanide catalyst, a superacid catalyst, a metal salt of a superacid catalyst and/or a tertiary amine catalyst, under conditions such that a hybrid polyester-polyether polyol is formed. The hybrid polyester-polyether polyol offers the advantages of both ester and ether functionalities when used in a polyurethane formulation, thus enhancing physical properties. The process results in products having narrow polydispersity, a low acid number and unsaturation, and reduced byproduct formation, particularly when the double metal cyanide catalyst is employed. | 02-07-2013 |
20140018459 | METHOD FOR PRODUCING SHORT-CHAIN POLYFUNCTIONAL POLYETHER POLYOLS UTILIZING SUPERACID AND DOUBLE-METAL CYANIDE CATALYSIS - A two stage alkoxlyation process for preparing a short-chain polyether polyol from a starter compound comprising from 3 to 9 hydroxyl groups and at least one alkylene oxide, wherein said starter compound has a hydroxy equivalent weight of from 22 to 90 Da. Said process comprises a first stage alkoxlyation using a superacid catalyst to prepare an oligomeric alkoxylated starter compound that is further alkoxylated to the short-chain polyether polyol of the invention in a second stage using a DMC catalyst. The process of the present invention may be performed continuously, in a batch, or semi-batch process. | 01-16-2014 |
20140058037 | Stabilizer Polymerization Process and Process for Making Polymer Polyols - A polymeric stabilizer is produced by copolymerizing an unsaturated polyether with an unsaturated low molecular weight monomer in a controlled radical polymerization. The polymeric stabilizer is useful for producing polymer polyol products via a mechanical dispersion process or an in situ polymerization process. | 02-27-2014 |
20140163197 | PROCESS FOR MAKING POLYETHER ALCOHOLS HAVING OXYETHYLENE UNITS BY POLYMERIZATION OF ETHYLENE CARBONATE IN THE PRESENCE OF DOUBLE METAL CYANIDE CATALYSTS - Ethylene carbonate is polymerized by itself or together with another cyclic monomer such as 1,2-propylene oxide in the presence of a double metal cyanide catalyst. Most of the ethylene carbonate adds to the chain to form a terminal carbonate group, which decarboxylates to produce a hydroxyethyl group at the end of the polymer chain. The polymerization of more ethylene carbonate onto the chain end results in the formation of poly(ethyleneoxy) units. Therefore, the process provides a method for making poly(ethyleneoxy) polymers without the need to polymerize ethylene oxide. The process is useful for making polyethers that are useful as water-absorbable polymers, surfactants and as raw materials for polyurethanes. The process is also useful for increasing the primary hydroxyl content of a polyether. | 06-12-2014 |
20140206787 | Polyfunctional Polyglycerine Initiated Polyether Polyols and High Resilience Polyurethane Slabstock Therefrom - A polyglycerine initiated polyether polyol exhibiting a final functionality less than the nominal functionalities of the polyol initiator wherein the initiator is a polyglycerine formed by the polymerization of glycerin having an HEW less than about 35 and exhibiting a nominal functionality between 2 and 16 is provided. Also provided is a process for producing a polyfunctional polyurethane by the reaction of a mixture containing a polyol based on polyglycerine initiator wherein between 5 wt % and 100 wt % of the total initiator is polyglycerine having a nominal functionality between 2 and 16, at least one organic isocyanate, an amine and/or a metal salt catalyst, and optionally a blowing agent. Also provided is a flexible polyurethane foam comprising a reaction product of a polyglycerine or formed by the glycidol polymerization of glycerin, at least one organic isocyanate, and an amine catalyst. | 07-24-2014 |