Polyol compositions for polyurethanes

• US 6,291,625 B1
• Filed: 07/24/1998
• Issued: 09/18/2001
• Est. Priority Date: 01/26/1996
• Status: Expired due to Fees

• Current Assignee: Veolia Water Outsourcing Ltd.
• Original Assignee: Veolia Water Outsourcing Ltd.
• Inventors: Hosgood, Henry D.
• Primary Examiner(s): GORR, RACHEL F
• Application Number:
  US09/117,332
• Time in Patent Office: 1,152 Days
• Field of Search: 528/75, 528/74.5, 528/84, 554/156
• US Class Current: 528/74.5
• CPC Class Codes: C08G 18/36 Hydroxylated esters of higher fatty acids
• CPC Class Codes: C08G 2190/00 Compositions for sealing or packing joints

Abstract

A polyol composition for reacting with a polyisocyanate to form a polyurethane resin, comprises: (a) a triglyceride of a C₁₂ to C₂₅ hydroxy-substituted fatty acid or a C₁₂ to C₂₅ hydroxy-substituted fatty acid and glycerol, which can react together to produce a triglyceride; and (b) at least 0.1 mole per mole of triglyceride (a) or triglyceride capable of being formed from the fatty acid and the glycerol, of an oxide, hydroxide, or carbonate of a metal from Group IIA of the periodic table. A composition for reacting with a polyisocyanate to form a polyurethane resin, comprises the reaction products of: (a) a triglyceride of a C₁₂ to C₂₅ hydroxy-substituted fatty acid, a C₁₂to C₂₅ hydroxy-substituted fatty acid and glycerol, which can react together to produce a triglyceride: and (b) at least 0.1 mole, per mole of triglyceride (a) or triglyceride capable of being formed from the fatty acid and the glycerol, of an oxide, hydroxide or carbonate of a metal from Group IIA of the periodic table.

Claims

1. A method of forming a resin composition for forming a polyurethane resin, comprising:

preparing a polyol composition comprising;

reacting together;

(a) a triglyceride of a C₁₂ to C₂₅ hydroxy-substituted fatty acid; and

(b) calcium hydroxide to hydrolyze the triglyceride to yield a fatty acid in free form and glycerol; and

saponifying the fatty acid to give a fatty acid salt,

the calcium hydroxide being provided in an amount of at least 0.1 mole per mole of the triglyceride; and

combining the polyol composition with a polyisocyanate to form the resin composition.

2. The method according to claim 1, wherein water produced by the saponifying is removed by reaction with calcium oxide.

3. A composition for forming a polyurethane resin comprising:

a polyol composition and polyisocyanate,

the polyol composition having been prepared by

reacting together;

(a) a triglyceride of a C₁₂ to C₂₅ hydroxy-substituted fatty acid; and

(b) calcium hydroxide to hydrolyze the triglyceride to yield a fatty acid in free form and glycerol; and

saponifying the fatty acid to give a fatty acid salt,

the calcium hydroxide being provided in an amount of at least 0.1 mole per mole of the triglyceride.

4. The composition of claim 3, wherein the hydroxy-substituted fatty acid is an unsaturated fatty acid.

5. The composition of claim 3, wherein the hydroxy-substituted fatty acid is ricinoleic acid.

6. The composition of claim 5, wherein the triglyceride of ricinoleic acid is provided by castor oil.

12. The composition claim 3, wherein water produced by saponifying the fatty acid is removed by reaction with calcium oxide.

7. A polyurethane resin formed by

reacting a polyol composition with a polyisocyanate,

the polyol composition having been prepared by

reacting together:

(a) a triglyceride of a C₁₂ to C₂₅ hydroxy-substituted fatty acid; and

(b) calcium hydroxide to hydrolyze the triglyceride to yield a fatty acid in free form and glycerol; and

saponifying the fatty acid to give a fatty acid salt,

the calcium hydroxide being provided in an amount of at least 0.1 mole per mole of the triglyceride.

8. The polyurethane resin according to claim 7, wherein water produced by saponifying the fatty acid is removed by reaction with calcium oxide.

9. The polyurethane resin according to claim 7, wherein the hydroxy-substituted fatty acid is an unsaturated fatty acid.

10. A polyurethane resin according to claim 7, wherein the hydroxy-substituted fatty acid is ricinoleic acid.

11. A polyurethane resin according to claim 7, wherein the triglyceride of ricinoleic acid is provided by castor oil.