Abstract Tough, heat-formable sheet material and mouldable articles produced therefrom comprising a high-molecular weight synthetic resin as stiffening component wherein the stiffening component is a low-melting, highly-crystalline polyesterurethane formed by reacting polyester chains with isocyanate to obtain sufficient molecular weight to give desired properties. Products are especially suitable for use in shoe counters and can be formulated to combine desired mechanical properties with predetermined set-up times during which mouldability is retained to enable several shoe-making operations to be carried out without the need for further heating.
Tough, heat-formable sheet material or mouldable articles produced therefrom comprising a high-molecular weight synthetic resin as stiffening component characterised in that the stiffening component is provided as a highly-crystalline polyesterurethane formed by reacting polyester chains with isocyanate.
Claim 2
Dependent Claim
37 words
Tough, heat-formable sheet material or mouldable articles produced therefrom comprising a high-molecular weight synthetic resin as stiffening component characterised in that the stiffening component is provided as a highly-crystalline polyesterurethane formed by reacting polyester chains with isocyanate.
Claim 3
Dependent Claim
26 words
Material or articles according to claim 1 which are in the malleable, non-crystalline state at temperatures in the range 60° - 125°C, preferably 85° ± 5°C.
Claim 4
Dependent Claim
14 words
Materials or articles according to claim 1 or 2, comprising up to 50% filler.
Claim 5
Dependent Claim
16 words
Materials or articles according to claim 1, 2 or 3, including a woven or non-woven substrate.
Claim 6
Dependent Claim
26 words
Method of producing materials or articles according to any one of the preceding claims using diisocyanate in an amount to give an index 0.75 to 1.1.
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