Method for producing sintered porous polymeric articles
AssigneeThe Standard Oil Company
InventorsRichard C. Adams, Albert J. Herold
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Abstract
A process for forming sintered porous polymeric articles by the steps of sintering preforms of polymeric particles with dielectric heat, or with dielectric heat in combination with conventional heating techniques. Sintered porous polymeric articles made of rubber-modified nitrile resins in accordance with the foregoing processes are also disclosed.
Claims38
A method for producing a sintered porous polymeric article from a polymeric material with a sufficiently high loss factor for effective dielectric heating comprising:
- forming a preform comprising a plurality of discrete polymeric particles compressed together in a predetermined shape;
- and
- sintering said preform to form said article, said sintering step including the step of heating said preform using dielectric heating, said sintering step being conducted for a sufficient period to provide said article with desired strength and porosity.
A continuous process for forming sintered porous polymeric articles from a polymeric material with a sufficiently high loss factor for effective dielectric heating comprising:
- forming a preform comprising a continuous length of packed discrete polymeric particles of said polymeric material;
- sintering said preform in a sintering step comprising the step of heating said preform using dielectric heating;
- and
- comminuting the sintered preform from the previous step to form discrete sintered porous polymeric articles.
Dependencies are inferred from the claim text.