Patent ID: 7078443

Claim:
A semi-rigid viscoelastic foam made from a Part A composition and a Part B composition, said Part A composition comprising 20–50 weight percent isocyanate (NCO), said Part B composition comprising 1–15 parts by weight propylene oxide-extended monoethanolamine-based polyether polyol, 6–25 parts by weight propylene oxide-extended triethanolamine-based polyether polyol, 22–40 parts by weight propylene oxide-extended ethylenediamine-based polyether polyol, at least 10 parts by weight of an additional polyol selected from the group consisting of filled polyether polyols and unfilled polyether polyols, and 0.4–4 parts by weight catalyst, said Part B composition having 100 parts by weight total polyols, said Part A and Part B compositions being combined to provide said semi-rigid viscoelastic foam.