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US 10,519,272 B2Granted
Absorbent polymeric material, method for producing same and uses thereof
AssigneePossible Answers, S.A.
InventorsNelson Duarte Mendes Oliveira, Bruno Alexandre Couto Oliveira, Igor Alexandre Vieira Ribeiro
Life of this patent
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Abstract
The present disclosure relates to a polymeric material having dilating properties and production of the respective material, such that it is incorporated into protective products/equipments to absorb impact energy resulting from a collision. This material may be used in motorcyclists' or sports helmets, ballistic vests, kneepads, elbow pads, protective footwear and any other personal protective products.
Claims17
A polymeric material for absorbing and dissipating kinetic energy, wherein the polymeric material comprises:
- a. 30-65% (w/w) of an isocyanate having a molecular weight between 100-1000 g/mol;
- b. 20-70% (w/w) of a polyol having a molecular weight between 30-6000 g/mol, wherein the isocyanate and polyol combination comprises 2 to 5 reactive groups;
- wherein the polyol comprises at least one of or mixtures of 1,2-propanediol, glycerol, and 1,2-ethanediol;
- and
- c. 1-10% (w/w) of a plasticiser having a molecular weight between 50-6000 g/mol, wherein the plasticiser is selected from the group consisting of:
- castor oil, polypropylene glycol, polyethylene glycol, 2-methyl-1,3-propanediol, and mixtures thereof.
3 more elements
Dependencies are inferred from the claim text.