u00b0 c molar mass of the pa segments 2150 g moleratio x y 3 53 1______________________________________ the product was substantially transparent as a granulate it did not exhibit layered structures or delamination fibrillation either in the formof extruded strands or injection molded test bars its flexural modulus of elasticity was 140 n mm 2 a value of 560 n mm 2 was measured at 40 u00b0 c the elastomer did not exhibit a breakage to 40 u00b0 c in the test to measure the notched impact strength test 3 2 to be compared with comparison example 1 and test 2 2 a block copolyetheresteretheramide is produced from 28 kg of caprolactam 8 28 kg of pripol 1013 6 25 kg of jeffamin d 2000 and 11 04 kg of terathane 1000 under the conditions given for test 3 1 the catalyst and antioxidant are also the same as in test 3 1 ______________________________________relative viscosity 1 699melting point maximum 211 5 u00b0 c molar mass of the pa segments 2160 g moleratio x y 3 53 1______________________________________ with the exception of its flexural modulus of elasticity for which a valueof 165 n mm 2 was measured this elastomer corresponded to the product of test 3 1 the viscosity or the molar mass of such pa 6 elastomers can be readily increased by subsequent condensation in the solid phase which is normal for conventional polyamides for.