Block copolyetheramides-based thermofusible adhesive compositions

As a novel industrial product, a thermofusible adhesive, formed of the product obtained from copolycondensation of polyamide blocks having reactive extremities with polyether blocks having reactive extremities such as, among others:

• (a) polyamide blocks having diacid chain ends with either polyether diol blocks or polyetherdiamine blocks (by cyanoethylation and hydrogenation of polyether diols) having a molecular weight comprised between 300 and 15.000);
• (b) polyamide blocks having diamine chain ends with polyether blocks having carboxylic chain ends with a molecular weight of 100 to 6000;