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EP0323700A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Polyester urethane sheet materials

Assignee: Bostik Ltd
•
Filing: 1988-11-21
•
Granted: —
•
Expires: 2008-11-21
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Abstract

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.

Inventors

  • 👤 Reginald Thomas Agger
  • 👤 John Raymond Taylor
  • 👤 Alan Hardy

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 21:59
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; C09J175/06; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G2170/00; C08G2170/20; C08G2250/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31551; Y10T442/00; Y10T442/20; Y10T442/2361

Claims Analysis

Total Claims: 6
Claim 1
Independent 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 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.

References Cited (Backward Citations)

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