Main > ORGANIC CHEMICALS > Aliphatics > Polyols > TriOls. TetrOls. > Patent > Claims > Claim 1: Prepn.: Aldolization of > Aldehyde: R-CH2-CHO; R=H or > 1-7C Alkyl Etc. with Formaldehyde > in pres.: Anion Exchange Resin & > Catalytic Hydrogenation; > IMPROVEMENT: Aldolization at > Temp.=50-100C in presence of: > Water (48-65%). Hydrogenation at > Temp.=50-200C in presence of: > Water (20-90%) as Sole Solvent. > Claim 3: Aldehyde: n-Butanal; > Propanal or Acetaldehyde. Claim 4: > Ion Exchange Resin: > Weak Basic Anion Exchange Resin > Includes > 1 -NH2 Etc. Claims 5-10: > Hydrogenation Catalyst: Ni > Supported on Carbon Carrier. > Claims 11 to 13: Aldehyde is: > Steam Distillation under Vacuo.

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