Peter H. Markusch - McMurray PA Robert L. Cline - Paden City WV Richard S. Pantone - New Martinsville WV Ralf Guether - Pittsburgh PA Thomas L. Sekelik - Carnegie PA Karl W. Haider - McKees Rocks PA
Assignee:
Bayer Corporation - Pittsburgh PA
International Classification:
C08G 1810
US Classification:
528 58, 528 64, 528 85
Abstract:
This invention relates to a process for the production of an optically clear, light-stable polyurethane-urea elastomer having an onset softening point of at least 130Â C. , processed at ambient temperature and casted in a mold at an isocyanate index of 95 to 120. This process comprises reacting: A) a liquid polyisocyanate or polyisocyanate prepolymer having an NCO group content of about 5 to about 50%, an average functionality of 2 to 3, a viscosity of less than 5,000 mPa. s at 25Â C. ; and B) an isocyanate-reactive component; in the presence of C) at least one organometallic catalyst. The present invention also relates to the optically clear, light-stable polyurethane-urea elastomers produced by this process.
Process For The Production Of Rigid Foams From Alkaline Polyether Polyols
Jerry E. Tracy - Middlebourne WV Scott A. Kane - New Martinsville WV Robert P. Yeater - Moundsville WV Karl W. Haider - Hurricane WV
Assignee:
Bayer Polymers LLC - Pittsburgh PA
International Classification:
C08G 1828
US Classification:
521174, 521123, 521131, 521167
Abstract:
The present invention relates to a process for the preparation of rigid foams comprising reacting a polyisocyanate component with an isocyanate-reactive component in the present of a blowing agent. Suitable isocyanate-reactive components for the presently claimed invention comprises polyether polyols having an OH number of from 200 to 800 and containing from 3 to 8 hydroxyl groups wherein the level of alkalinity present in the polyether polyol is equivalent to a hydroxide ion level of from about 0. 006% to about 0. 21% by weight.
Hydrophobic Light Stable Polyurethane Elastomer With Improved Mechanical Properties
Karl W. Haider - McKees Rocks PA Jack C. Chan - Coraopolis PA E. Haakan Jonsson - Fairfield OH Uli W. Franz - Coraopolis PA Ronald P. Taylor - Moon Township PA
A hydrophobic polyurethane elastomer is disclosed comprising an isocyanate terminated prepolymer having an isocyanate content ranging from 4 to 12 wt. % NCO comprising the reaction product of: i) an OH terminated homopolymer of butadiene having molecular weight ranging from 1000 to 4000 and an OH functionality of from 1. 9 to 2. 1; ii) an aliphatic or cycloaliphatic diisocyanate; and a diol chain extender having a molecular weight ranging from 62 to 400.
Process For Preparing Closed-Cell Water-Blown Rigid Polyurethane Foams Having Improved Mechanical Properties
The present invention is directed to a process for preparing water-blown rigid polyurethane foams having at least an 80% closed-cell content which involves reacting a) at least one polyol mixture which is composed of (i) at least one polymer polyol; (ii) at least one polyol having a hydroxyl value within the range of from about 200 to about 800; and (iii) optionally, at least one polyol having a hydroxyl value within the range of from about 25 to about 115; with b) at least one polymeric isocyanate and/or a prepolymer thereof; in the presence of c) optionally, at least one catalyst; d) water; and e) optionally, at least one additive or auxiliary agent. The present invention is also directed to the closed-cell water blown rigid polyurethane foams produced by the process of the present invention. The invention is further directed to a polyurethane-foam forming mixture which is used to produce the water-blown rigid polyurethane foams of the present invention. Foams produced according to the present invention have reduced friability and acceptable adhesion to substrates as well as acceptable compressive strength.
Amine-Initiated Polyether Polyols And A Process For Their Production
Nathan L. Anderson - Charleston WV, US Karl W. Haider - Hurricane WV, US Keith J. Headley - Paden City WV, US Kerry A. Ingold - Pittsburgh PA, US Herman P. Doerge - Moon Township PA, US
Clear, amine-initiated polyether polyols are made by epoxidizing an amine in the presence of an alkali metal hydroxide catalyst. By reducing the amount of catalyst used during the polyol synthesis and by adding the catalyst after between 5 and 30% of the total amount of at least one alkylene oxide has been added, after lactic acid neutralization, gives a short chain polyol that has foam processing characteristics similar to the conventional sulfuric acid neutralized polyol. The polyols produced in this manner are particularly useful for the production of polyurethane and polyisocyanurate foams.
Bi Le-Khac - West Chester PA, US Karl W. Haider - Hurricane WV, US Ramesh Subramanian - Coraopolis PA, US Charles A. Gambino - McDonald PA, US James Edward Kassner - Wexford PA, US
Ultraviolet (UV)-curable polyurethane compositions are provided which are made by reacting an isocyanate with an ultraviolet (UV)-curable polyol that is made by co-polymerizing an alkylene oxide, an unsaturated carboxylic acid or anhydride and a hydroxy functional compound and which has an ultra-low level of unsaturation. The inventive ultraviolet (UV)-curable polyurethane compositions may find use in or as coatings, adhesives, sealants, elastomers and the like.
Polyol Compositions Useful For Preparing Dimensionally Stable, Low Density Water-Blown Rigid Foams And The Processes Related Thereto
Karl W. Haider - Hurricane WV, US David D. Steppan - Gibsonia PA, US Michael E. McGregor - Pittsburgh PA, US Kerry A. Ingold - Pittsburgh PA, US Vincent M. Mautino - Finleyville PA, US Michael A. Dobransky - Pittsburgh PA, US
The present invention relates to polyol compositions which can be used to produce dimensionally stable, low density water-blown rigid foams which have acceptable compressive strengths and acceptable k-factors. In one embodiment of the present invention, the polyol compositions are composed of at least one aromatic amine-initiated polyether polyol and at least one polyether polyol having a functionality greater than or equal to 2. 5 in which at least 50% by weight of the polyol composition is aromatic amine-initiated polyether polyol and in which no more than 50% by weight of the polyol composition is polyether polyol having a functionality greater than or equal to 2. 5. In another embodiment of the present invention, the polyol compositions are composed of at least one aromatic amine-initiated polyether polyol and at least one polyester polyol in which at least 30% by weight of the polyol composition is aromatic amine-initiated polyether polyol and in which no more than 70% by weight of the polyol composition is polyester polyol.
Process For The Production Of Polyoxyalkylene Containing Polyols From Phenol Condensation Products
Karl W. Haider - Wexford PA, US Stanley L. Hager - Cross Lanes WV, US
Assignee:
Bayer MaterialScience LLC - Pittsburgh PA
International Classification:
C08L 71/10
US Classification:
525409, 525405
Abstract:
This invention relates to a one-stage process for the production of polyoxyalkylene containing polyols having equivalent weights of about 150 to about 6000 and functionalities of about 2 to 8. The process comprises (1) mixing (a) an organic compound having a hydroxyl functionality of about 2 to about 8 and an equivalent weight of about 35 to about 575, with (b) a hydroxyl functional compound having an equivalent weight of about 100 to about 6000 and a functionality of about 2 to 8; and (2) alkoxylating the mixture with (c) one or more alkylene oxides, in the presence of (d) one or more double metal cyanide catalysts. Suitable compounds to be used as (a) the organic compound having a hydroxyl functionality of about 2 to about 8 and an equivalent weight of about 35 to about 575 in the present invention include bisphenol-A, Bisphenol TMC, tetrabromobisphenol A, and novolak phenolic resins.
Youtube
Flugle-Bugle VI
Der alte Dessauer - old german trumpet solo played by Christoph Haider...
Category:
Music
Uploaded:
07 Jan, 2008
Duration:
5m 3s
Widerstand in Haiderland Trailer 2
... "Meischberger (...) ist nun um das Ansehen der blau-schwarzen Regi...
Category:
News & Politics
Uploaded:
17 Jan, 2011
Duration:
1m 31s
Abendrot - Sunset - Vesselina Kasarova
Whitsunday 2009: Gaisberg Sunset and Fireworks in Salzburg - Pfingstso...
Category:
Entertainment
Uploaded:
04 Jun, 2009
Duration:
3m 54s
AALMIAKHBAR IQBAL HOME Heidelberg
safdar hamadani, mahpara safdar,iqbal haider,asif raza and nageena asi...
Category:
Travel & Events
Uploaded:
14 Jul, 2009
Duration:
4m 4s
Karl Heinz Grasser vs. Armin Wolf
Einer der besten Europischen Finanzminister
Category:
News & Politics
Uploaded:
26 Feb, 2007
Duration:
8m 39s
Nicolas Hofer und Alexander Benesch im Gesprc...
So liebe Infokrieger .. Da das Forum Down ist , und vielleicht viele d...
Category:
News & Politics
Uploaded:
08 Jan, 2009
Duration:
10m
Flugle-Bugle VII
Karneval von Venedig - carnival of venice - arban variation performed ...
Category:
Music
Uploaded:
24 Jan, 2008
Duration:
8m 21s
Club2 22.10.2008 - Walter Meischberger ber Jr...
Club2 vom 22.10.2008 Thema: Mythos Jrg Haider - Sein und Schein Der eh...