| 摘要 |
<p>A SOFT FOAM HAVING AN ASKER C HARDNESS OF LESS THAN ABOUT 65, COMPRISING;(A) FROM 30 TO 70 PERCENT BY WEIGHT (BASED ON THE COMBINED WEIGHT OF COMPONENTS A AND B) OF ONE OR MORE ALKENYL AROMATIC POLYMERS AND WHEREIN AT LEAST ONE OF SAID ALKENYL AROMATIC POLYMERS HAS A MOLECULAR WEIGHT (MW) OF FROM 100,000 TO 500,000; AND(B) FROM 30 TO 70 PERCENT BY WEIGHT (BASED ON THE COMBINED WEIGHT OF COMPONENTS A AND B) OF ONE OR MORE SUBSTANTIALLY RANDOM INTERPOLYMERS HAVING AN I2 OF 0.1 TO 50 G/10 MIN, AN MW/MN OF 1.5 TO 20; COMPRISING(1) FROM 8 TO 45 MOL PERCENT OF POLYMER UNITS DERIVED FROM;(A) AT LEAST ONE VINYL OR VINYLIDENE AROMATIC MONOMER,OR(B) AT LEAST ONE HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENE MONOMER, OR(C) A COMBINATION OF AT LEAST ONE AROMATIC VINYL OR VINYLIDENE MONOMER AND AT LEAST ONE HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENEMONOMER, AND(2) FROM 55 TO 92 MOL PERCENT OF POLYMER UNITS DERIVED FROM AT LEAST ONE OF ETHYLENE AND/OR A C3-20α-OLEFIN; AND(3) FROM 0 TO 20 MOL PERCENT OF POLYMER UNITS DERIVED FROM ONE OR MORE OF ETHYLENICALLY UNSATURATED POLYMERIZABLE MONOMERS OTHER THAN THOSE DERIVED FROM (1) AND (2); AND(C) OPTIONALLY, ONE OR MORE NUCLEATING AGENTS; AND(D) OPTIONALLY, ONE OR MORE OTHER ADDITIVES; AND(E) ONE OR MORE BLOWING AGENTS PRESENT IN A TOTAL AMOUNT OF FROM 0.4 TO 5.0 GRAM-MOLES PER KILOGRAM (BASED ON THE COMBINED WEIGHT OF COMPONENTS A AND B).</p> |
