Colorable composition
The present invention concerns a colorable composition comprising a bitumen-like compound having a PEN value of at least 30 dmm 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) and a mixture of thermoplastic elastomers comprising:—one or more engineering thermoplastics (c1) having a melt index of I to 50 at 2.16 kg/12300C (determined in accordance with ASTM D1238), and/or a styrenic block copolymer (c2) of formula A-B-A or (A-B) n -X, wherein A stands for a polymer block of a vinyl aromatic monomer, B stands for a polymer block of a conjugated diene monomer, X stands for a coupling moiety, and n stands for an integer of 2 to 20, wherein the weight ratio of (c1) to (c2) varies from 100:0 to 0:100; and—a hydrogenated styrenic block copolymer (d) of formula A-C-A or (A-C) n -X, wherein A, X, and n have the previously given meanings and C stands for a polymer block of a conjugated diene monomer, hydrogenated to an extent of at least 50% wherein the weight ratio of (c), being the total of (c1) and (c2), to (d) varies from 95:5 to 5:95, the total amount of A in block copolymers (c2) and (d) is in the range of from 10 to 45 weight % and wherein the block copolymers have an apparent molecular weight of from 100,000 to 600,000, and the content of said mixture of (c) and (d) being in the range from 5 to 35 wt % based on the composition, and its use as roofing membrane/roofing felt, as well as colored roofing membranes/roofing felts made thereof.
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14 . A colorable composition comprising:
a bitumen-like compound having a PEN value of at least 30 dmm 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) and a mixture of thermoplastic elastomers comprising:
one or more engineering thermoplastics (c1) having a melt index of 1 to 50 at 2.16 kg/230° C. (determined in accordance with ASTM D1238), and/or a styrenic block copolymer (c2) of formula A-B-A or (A-B) n -X, wherein A stands for a polymer block of a vinyl aromatic monomer, B stands for a polymer block of a conjugated diene monomer, X stands for a coupling moiety, and n stands for an integer of 2 to 20, wherein the weight ratio of (c1) to (c2) varies from 100:0 to 0:100; and
a hydrogenated styrenic block copolymer (d) of formula A-C-A or (A-C) n -X, wherein A, X, and n have the previously given meanings and C stands for a polymer block of a conjugated diene monomer, hydrogenated to an extent of at least 50% wherein the weight ratio of (c), being the total of (c1) and (c2), to (d) varies from 95:5 to 5:95, the total amount of A in block copolymers (c2) and (d) is in the range of from 10 to 45 weight % and wherein the block copolymers have an apparent molecular weight of from 100,000 to 600,000, and the content of said mixture of (c) and (d) being in the range from 5 to 35 wt. % based on the composition.
15 . The colorable composition of claim 14 wherein the bitumen-like compound comprises the hydrogenated petroleum resin (a) and an oil (b) with a flash point of 230° C. or above and a paraffinic content of at least 50% and a viscosity of at least 7 mm 2 /s (100° C.).
16 . The colorable composition of claim 14 wherein the bitumen-like compound comprises less than 40 wt. % of the oil.
17 . The colorable composition of claim 14 comprising:
a bitumen-like compound comprising:
from 55 to 75 wt % of the hydrogenated petroleum resin (a);
from 15 to 35 wt. % of the oil (b) and
a mixture of thermoplastic elastomers comprising:
from 2 to 10 wt. % of the block copolymer (c) and
from 4 to 14 wt. % of the block copolymer (d).
18 . The colorable composition of claim 14 wherein (c) is at least one of a styrene-isoprene-styrene block copolymer and a styrene-butadiene-styrene block copolymer.
19 . The colorable composition of claim 14 wherein (d) is at least one of a styrene-ethylene-butylene-styrene block copolymer and a styrene-ethylene-propylene-styrene block copolymer.
20 . The colorable composition of claim 14 further comprising at least one pigments and fillers.
21 . The colorable composition of claim 20 wherein at least part of the pigment is titanium dioxide and at least part of the filler is crushed limestone.
22 . The colorable composition of claim 14 comprising both one or more engineering plastics (c1) and block copolymer (c2) in a weight ratio of 5:95 to 95:5.
23 . The colorable composition of claim 14 having a softening point of from 70 to 180° C.
24 . A roofing felt that comprises a colorable composition comprising a bitumen-like compound having a PEN value of at least 30 dmm 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) and a mixture of thermoplastic elastomers comprising:
one or more engineering thermoplastics (c1) having a melt index of 1 to 50 at 2.16 kg/230° C. (determined in accordance with ASTM D1238), and/or a styrenic block copolymer (c2) of formula A-B-A or (A-B) n -X, wherein A stands for a polymer block of a vinyl aromatic monomer, B stands for a polymer block of a conjugated diene monomer, X stands for a coupling moiety, and n stands for an integer of 2 to 20, wherein the weight ratio of (c1) to (c2) varies from 100:0 to 0:100; and
a hydrogenated styrenic block copolymer (d) of formula A-C-A or (A-C) n -X, wherein A, X, and n have the previously given meanings and C stands for a polymer block of a conjugated diene monomer, hydrogenated to an extent of at least 50% wherein the weight ratio of (c), being the total of (c1) and (c2), to (d) varies from 95:5 to 5:95, the total amount of A in block copolymers (c2) and (d) is in the range of from 10 to 45 weight % and wherein the block copolymers have an apparent molecular weight of from 100,000 to 600,000, and the content of said mixture of (c) and (d) being in the range from 5 to 35 wt. % based on the composition.
25 . The roofing felt of claim 24 wherein the colorable composition further comprises at least one of pigments and fillers.
26 . The roofing felt of claim 25 wherein at least part of the pigment is titanium dioxide and at least part of the filer is crushed limestone.
27 . The roofing felt of claim 26 wherein said roofing felt has a minimum total solar reflectance of 0.7 when tested in accordance with ASTM E903, E1918 or C1549 and a minimum thermal emittance of 0.75 when tested in accordance with ASTMC1371 or E408.
28 . A roofing membrane that comprises a colorable composition comprising:
a bitumen-like compound having a PEN value of at least 30 dmm 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) and a mixture of thermoplastic elastomers comprising:
one or more engineering thermoplastics (c1) having a melt index of 1 to 50 at 2.16 kg/230° C. (determined in accordance with ASTM D1238), and/or a styrenic block copolymer (c2) of formula A-B-A or (A-B) n -X, wherein A stands for a polymer block of a vinyl aromatic monomer, B stands for a polymer block of a conjugated diene monomer, X stands for a coupling moiety, and n stands for an integer of 2 to 20, wherein the weight ratio of (c1) to (c2) varies from 100:0 to 0:100; and
a hydrogenated styrenic block copolymer (d) of formula A-C-A or (A-C) n -X, wherein A, X, and n have the previously given meanings and C stands for a polymer block of a conjugated diene monomer, hydrogenated to an extent of at least 50% wherein the weight ratio of (c), being the total of (c1) and (c2), to (d) varies from 95:5 to 5:95, the total amount of A in block copolymers (c2) and (d) is in the range of from 10 to 45 weight % and wherein the block copolymers have an apparent molecular weight of from 100,000 to 600,000, and the content of said mixture of (c) and (d) being in the range from 5 to 35 wt. % based on the composition.