Copolyetherester elastomer with cycloaliphatic hard segments
Patent 4985536 Issued on January 15, 1991. Estimated Expiration Date: 
June 7, 2010. 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.
June 7, 2010. 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 Re32770 3023192 3157619 3238178 3243413 3261812 3651014 Polyesterether having commercially acceptable mold release characteristics Copolyetherester based on ethylene oxide-capped poly(propylene oxide) glycol and branching agent Stabilization of polymers containing poly(alkylene oxide) units InventorAssigneeApplicationNo. 539109 filed on 06/07/1990US Classes:528/272, From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof525/397, Mixed with carboxylic acid or derivative reactant or polymer derived therefrom525/437, Solid polymer derived from polyhydroxy reactant and polycarboxylic acid or derivative reactant; or derived from di- or higher ester of a polycarboxylic acid as sole reactant528/300, Polyhydroxy-containing compound or salt thereof having an ether-oxygen atom as reactant528/301, Acyclic ether-oxygen compound528/307, Cycloaliphatic ring-containing reactant (other than aryl)528/308Aryl-containing carboxylic acid or derivative of an aryl-containing dicarboxylic acidExaminersPrimary: Foelak, MortonAssistant: Acquah, Samuel A. International ClassC08G 063/02AbstractAn improved thermoplastic, segmented, linear copolyetherester elastomer having hard segments derived from diols and diacids which provide divalent cyclo-aliphatic radicals having a structure depicted by a formula which is ##STR1## Preferably the diol and diacid radicals are each at least 40% trans isomer and either one or the other radical is at least 70% trans isomer. The elastomers are suited for use as rubber-band substitutes, elastic strips, elastic coatings and the like.Field of SearchFrom di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereofPolyhydroxy-containing compound or salt thereof having an ether-oxygen atom as reactant Acyclic ether-oxygen compound Cycloaliphatic ring-containing reactant (other than aryl) Aryl-containing carboxylic acid or derivative of an aryl-containing dicarboxylic acid Mixed with carboxylic acid or derivative reactant or polymer derived therefrom Solid polymer derived from polyhydroxy reactant and polycarboxylic acid or derivative reactant; or derived from di- or higher ester of a polycarboxylic acid as sole reactant | |
