Abstract: The invention relates to thin block copolymer modified bituminous felts, comprising at least one block copolymer, comprising at least two poly(vinyl aromatic) blocks and at least one poly(conjugated diene) block, in a weight proportion of from more than 20 to 50 wt %, relative to the weight of the block copolymer and bitumen and optionally at least one filler, in a weight proportion in the range of from 0 to 50 wt %, relative to the weight of the complete composition and wherein the respective weight proportions of block copolymer, bitumen and filler add up to 100%. The invention also relates to the block copolymer modified bituminous composition, and the use thereof in bituminous pavements, coatings and sealants.

Abstract: The invention provides a colorable roofing membrane comprising fibrous material and a non-bituminous binder comprising: i. a bitumen-like compound having a penetration value of at least 30 units at 25° C., and comprising at least a hydrogenated petroleum resin (a) or comprising at least a hydrogenated petroleum resin (a) and an oil (b), ii. from 10 to 25 parts by weight on 100 parts of the bitumen-like compound of a hydrogenated styrenic block copolymer (c) of formula A-C-A or (A-C?)n—X, wherein A stands for a polymer block of a vinyl aromatic monomer, X stands for a coupling moiety, n stands for an integer of 2 to 20, and C respectively C? stand for a polymer block of a conjugated diene monomer, hydrogenated to an extent of at least 50% wherein the total amount of A in block copolymer (c) is in the range of from 22 to 40 weight % and wherein the block copolymer has an apparent molecular weight of from 140,000 to 300,000 (A-C-A), respectively of from n*70,000 to n*150,000 ((A-C?)n—X), wherein component i.