Catalysts which stabilize hydrohalocarbon blowing agent in polyisocyanurate foam formulations during polymerization
November 23, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2993870 Substituted triamino-s-triazines Novel catalyst system for trimerization organic isocyanates Isocyanurate foam catalyst Polymeric acid salts as isocyanurate foam catalysts Low friability polyisocyanurate foams Process for producing an isocyanate-based polymer having reduced smoke generation Process for the manufacture of polyisocyanurate foams Urethane-modified polyisocyanurate foams from oxyalkylated aniline and aromatic polyisocyanates A cocatalyst system for trimerizing isocyanates InventorsAssigneeApplicationNo. 344202 filed on 11/23/1994US Classes:521/118, -C-XH ingredient contains a nitrogen atom252/182.2, Reactant contains isocyante (-N=C=O) or blocked isocyanate group252/182.24, Reactant contains plural hydroxyl groups252/182.27, Reactant contains ether linkage252/182.28, Reactant contains carboxylic acid group or derivative thereof521/115, -C-X-C- compound contains a nitrogen atom521/116, -C-X-C- compound contains a -C-XH group wherein X is a chalcogen atom521/128, Ingredient is a nitrogen containing compound521/129, Nitrogen compound contains a nitrogen atom bonded to three carbon atoms and wherein none of the carbon atoms are double-bonded to oxygen521/130, Ingredient contains a carbon atom double bonded to oxygen, e.g., carboxylic acid, etc.521/131, Ingredient contains only carbon and hydrogen atoms, only C and halogen atoms, or only C, H, and halogen atoms521/170, With -XH reactant wherein X is a chalcogen atom521/902CELLULAR POLYMER CONTAINING AN ISOCYANURATE STRUCTUREExaminersPrimary: Seidleck, James J.Assistant: Sergent, Rabon Attorney, Agent or FirmForeign Patent References
International ClassesC08J 009/14C08K 005/02 C08K 005/10 C08K 005/19 AbstractThe present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which are capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol.Other References
Field of SearchReactant contains isocyante (-N=C=O) or blocked isocyanate groupReactant contains plural hydroxyl groups Reactant contains ether linkage Reactant contains carboxylic acid group or derivative thereof -C-X-C- compound contains a nitrogen atom -C-X-C- compound contains a -C-XH group wherein X is a chalcogen atom -C-XH ingredient contains a nitrogen atom Ingredient is a nitrogen containing compound Nitrogen compound contains a nitrogen atom bonded to three carbon atoms and wherein none of the carbon atoms are double-bonded to oxygen Ingredient contains a carbon atom double bonded to oxygen, e.g., carboxylic acid, etc. Ingredient contains only carbon and hydrogen atoms, only C and halogen atoms, or only C, H, and halogen atoms With -XH reactant wherein X is a chalcogen atom CELLULAR POLYMER CONTAINING AN ISOCYANURATE STRUCTURE | |
