FIELD: polymer materials.
SUBSTANCE: invention relates to polyurethane foams and urethane rubbers, in particular to compositions for manufacturing cushioning polyurethane foams containing: at least one polyetherpolyol having average molecular mass between 10 and 20 thousands; aromatic polyisocyanate; tackiness-enhancing resin; surfactant; and optionally plasticizer in amount between 0.1 and 10 wt parts per 100 wt parts polyetherpolyol. Such polyurethane foams are non-soft cushioning polyurethane materials showing low elasticity and having a wide application area. Urethane rubbers obtained from at least two polyetherpolyols, tackiness-enhancing polymeric resin, aromatic polyisocyanate, and at least one catalyst also show low-elasticity properties and can be employed to manufacture of medicinal and orthopedic articles. A method for manufacturing such rubbers is proposed.
EFFECT: increased assortment of useful polyurethane foams.
4 cl, 8 tbl
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| HARD POLYURETHANE WITH LOW DENSITY, EXPOSED ONLY UNDER THE ACTION OF WATER | 2013 |
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RU2631250C2 |
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