The polyurethane systems can be, for example, elastomers, sealants, adhesives, or foamable systems.doi:WO2007136710 A2Robert B. TurnerThomas KurthWOTurner, R. B.; Kurth, T. Method of Enhancing the Cure Time of Polyurethane Based Systems. U.S. Patent US20070270564-A1, 2007....
Polyurethane curable systems that contain an aminated glycerol as a catalyst to enhance the cure rate of the systems. The systems are based on polyoxyalkylene polyols that can be either polyether or polyester polyols. In addition, the polyols can be those that are provided by natural oils, suc...
The high-durability flexible polyurethane cold cure molded foam of the invention has an overall density of not less than 35 kg/m 3 and not more than 45 kg/m 3 and a wet heat compression set of not more than 15%, and preferably has a hardness change ratio, as determined in a repeated...
This invention relates to a new and useful color pigmented moisture curing polyurethane coating that has an adjustable drying time, as well as methods of producing the coating. The coating is suitable for use as a protective and/or decorative coating. The coating comprises one or more specified...
1. A process for the preparation of a one-component moisture-curable sealant composition wherein (a) a silane capped polyurethane polymer of the formular wherein R is lower alkyl of from 1 to 6 carbon atoms R1 is a divalent bridging radical selected from the group consisting of a diva...
Q1. Can I have a sample order for polyurethane sealant? A: Yes, we welcome sample order to test and check quality. Q2. What about the lead time? A:Sample needs 1 day, mass production time needs 1-2 weeks for order quantity more than Q3. Do you have any MOQ limit for order?...
4,4′-Methylenedianiline and its derivatives were assayed for mutagenicity in the Salmonella/microsomal mutagenicity assay developed by Ames. A specificity... TK Rao,GF Dorsey,BE Allen,... - 《Archives of Toxicology》 被引量: 67发表: 1982年 Extractable organic compounds in polyurethane foam with...
The present invention is directed to a process for the preparation of molded cold-cure polyurethane flexible foams. The process requires the use of aromatic polyisocyanates, a specifed mixture of polyether polyols which have specified ethylene oxide contents and a specified amount of water as blowin...
Good for heat-sensitive devices Limited to only a few polyurethane and silicone adhesives May require several days to achieve full cure May require post heat curing 4.5.1 Thermal Curing Adhesives that are heat cured fall into three categories: conventional, fast cure, and snap-cure types. The ...
Preparation of polyurethane-cold foam comprises reacting a mixture of highly reactive polyols and optionally fillers with polyfunctional isocyanates, amines, cross-linker, catalyst, propellants and stabilizers. The stabilizer is a polydimethylsiloxane compound, where the portion of siloxane in which (n+2...