摘要:
The reaction of an organic polyisocyanate with an organic compound containing at least 2 active hydrogen containing groups is catalyzed with a synergistic co-catalyst combination of at least one organo-mercuric catalyst and at least one zinc salt of an alkylcarboxylic acid having about 2 to about 22 carbon atoms. Useful solid (non-cellular) and foamed polyurethane products are obtained which are produced at a faster curing rate than with use of either co-catalyst alone.
摘要:
Curable compositions and a process for the preparation of a low viscosity, filled liquid polymer having active hydrogen-containing groups are disclosed. An organic zirconium compound lowers the viscosity of a combination of a liquid polymer and an inorganic filler.
摘要:
The subject matter of this invention pertains to polyurethane sealant compositions which are flexible, strong, and resistant to shrinkage. The sealants are prepared by reacting a mixture of polyether polyol and inorganic filler with a polyisocyanate. The polyurethane sealants are useful for making castings, for patching, and as heat barriers.
摘要:
The subject matter of this invention pertains to polyurethane sealant compositions which are flexible, strong, and resistant to shrinkage. The sealants are prepared by reacting a mixture of polyether polyol and inorganic filler with a polyisocyanate. The polyurethane sealants are useful for making castings, for patching, and as heat barriers.
摘要:
The subject matter of this invention relates to the preparation of polyurethanes. It is particularly concerned with the use of certain organo-zirconium and organo-mercury compounds as co-catalysts in the preparation of polyurethanes.
摘要:
A predicted performance metric of a candidate advertisement in an advertising slot can be received and compared to a baseline predicted performance metric for the candidate advertisement. A target bid associated with the candidate advertisement can be adjusted based upon the comparison, and the adjusted bid can be submitted to an auction for the advertising slot.
摘要:
There is a provided a stable low viscosity graft polymer dispersion comprising from 25 to 60 weight percent based on the total weight of the polymer dispersion of at least three ethylenically unsaturated monomers polymerized in the presence of a reaction moderator and a free radical initiator in a polyol mixture initially containing less than 0.1 moles of induced unsaturation per mole of said polyol mixture. One of the monomers in the mixture of ethylenically unsaturated monomers is a hydroxylfunctional or aminofunctional C.sub.2 -C.sub.6 alkyl methacrylate.
摘要:
The flame retardancy of flexible polyurethane foams is increased by incorporation into the foam forming reactants of a low molecular weight, high primary hydroxyl trifunctional polyether polyol having a hydroxyl number between 300 and 500 and a primary hydroxyl content greater than 50 percent.
摘要:
A predicted performance metric of a candidate advertisement in an advertising slot can be received and compared to a baseline predicted performance metric for the candidate advertisement. A target bid associated with the candidate advertisement can be adjusted based upon the comparison, and the adjusted bid can be submitted to an auction for the advertising slot.
摘要:
An advertiser specifies a conversion-based bid for a conversion event associated with an ad. If a conversion event occurs for the ad, an effective conversion-based bid can be adjusted by a risk premium associated with the ad. An account associated with the advertiser can be debited based upon the adjusted effective conversion-based bid.