Gels comprising block copolymers

A gel or gelloid liquid-extended polymer composition having (i) an ASTM D217 cone penetration value within the range from 100 to 400 (10.sup.-1 millimeters), (ii) an ASTM D412 ultimate elongation greater than 100% with substantially elastic deformation to an elongation of at least 100%, (iii) an ASTM D412 ultimate tensile strength of less than 10 MegaPascal, and (iv) a dynamic storage modulus at 23.degree. C. of less than 50000 Pascals;

• the composition comprising an intimate mixture of:
• (a) more than 50% by weight (based on total polymer content) of a block copolymer containing relatively hard blocks and relatively elastomeric blocks;
• (b) additional polymer or copolymer material which is a polyphenylene ether;
• and
• (c) at least 500 parts by weight of extender liquid per 100 parts by weight of the said block copolymer, which liquid extends and softens the elastomeric blocks of the said block copolymer wherein the amount of the said additional polymer or block copolymer material is sufficient to increase the softening or melting temperature of the composition over that of the same composition without the said additional polymer or copolymer material.