Production of plastics material incorporating starch

Details Production of plastics material incorporating starch Production of plastics material incorporating starch

C - Chemistry, Metallurgy

08

J

C08J 3/22 (2006.01) C08G 81/00 (2006.01) C08J 3/00 (2006.01) C08L 3/02 (2006.01) C08L 23/02 (2006.01)

Patent

CA 2066437

2066437 9104286 PCTABS00003 A filler for plastics material comprises natural starch which, before admixture with synthetic resin, is treated in a solution of calcium hydroxide or other alkali-earth metal hydroxide or of a metal hydroxide coordination complex having an alkaline character and is subsequently washed and dried before mixing with the molten resin. In a method utilising the invention the resin comprises a polymer or copolymer which affords carboxylic acid groups. A strong bonding of the resin with the starch particles results which improves the strength of the filled plastics, as compared with the corresponding plastics having an untreated starch filler.

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