Polyurethane foam for thin wall applications

A process to form a polyurethane foam, comprising the reaction product of:

• a) an A-side comprising
• i) a polymeric MDI blend,
• b) a B-side comprising:
• i) 0 to less than 10 wt % of a polyether polyol having a functionality equal to 2,
• ii) 35 to 80 wt % of a polyether polyol having a functionality equal to 3,
• iii) 20 to 45 wt % of a polyether polyol having a functionality greater than 3,
• iv) 5 to 15 wt % of a copolymer polyol,
• v) 01. to 0.4 wt % of a blowing catalyst,
• vi) 0.5 to 1 wt % of a gelling catalyst,
• vii) 1 to 4 wt % of a cell opener,
• and
• viii) 1 to 4 wt % of water,
• wherein the B-side weight percents are based on the total weight of the B-side,
• said process comprising the steps of:
• A) forming a reactive blend by mixing said A-side and said B-side at or below 105° F. and in a ratio, (A-side):(B-side), of 1:1 to 5:1 by volume;
• and
• B) subjecting the resulting reactive blend to conditions sufficient to cure the reactive blend to form a polyurethane foam.