FIELD: organic chemistry, in particular polyol composition for cold-cured polyurethane production.
SUBSTANCE: claimed composition contains (pts mass): polyethertriol or mixture of polyethertriol with molecular weight of 4500-6500 and average hydroxyl functionality of 3 - 100; ethylene glycol - 3.5-6.2; 1-4-butandiol - 3,5-8,0; triethylene diamine - 0.53-0.65; water - 0.25-0.50; organosilicate foam regulator - 0.002-0.004; and high boiling by-product from isoprene production based on alkyl- and oxyalkyl-substituted dioxacyclanes (e.g., 1,3-dioxane containing 1-4 mass % of hydroxyl groups) as organic filler - 2-100. Said filler may be used in mixture with oil plasticizer. Polyurethane obtained according to present method has Shore A hardness of 20-50, and is useful in automobile industry, and as material for gasket and sealing.
EFFECT: composition for production of polyurethane with increased hardness.
2 cl, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
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| METHOD OF MANUFACTURING ELASTIC COLD-MOLDING POLYURETHANE FOAM, AND ACTIVATING MIXTURE FOR CARRYING SAID METHOD INTO EFFECT | 1995 |
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