Patent ID: 11970566
Assignee: HYUNDAI TRANSYS INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC B  C

Claim 7:
8. A foam composition for manufacturing a polyurethane filter foam through a foaming head of a foaming machine, comprising:
a polyol component and an isocyanate;
wherein a diameter of the foaming head is about 30 mm to 45 mm,
wherein the polyol component comprises:
a first polyol having a weight average molecular weight of about 2,000 g/mol to 3,000 g/mol and having 3 to 4 first functional groups;
a second polyol having a weight average molecular weight of 9,000 g/mol to 11,000 g/mol and having 5 to 7 second functional groups; and
a third polyol having a weight average molecular weight of 50 g/mol to 1,000 g/mol and having 1 to 2 third functional groups,
wherein the polyol component comprises an amount of about 40% to 65% by weight of the first polyol, an amount of about 25% to 50% by weight of the second polyol, and an amount of about 5% to 15% by weight of the third polyol, based on a total amount of the polyol.