Polyacetal resin composition

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 59/00 (2006.01) C08K 3/18 (2006.01) C08L 23/08 (2006.01) C08L 23/26 (2006.01) C08L 71/02 (2006.01) C08L 23/02 (2006.01) C08L 71/00 (2006.01)

Patent

CA 2269776

A polyacetal resin composition which has improved compatibility, dispersibility, and interfacial adhesion between a polyacetal resin and an olefinic polymer and excellent friction and abrasion properties. The composition is prepared by mixing 100 parts by weight of a polyacetal resin (A) with 0.5 to 100 parts by weight of a particular modified olefinic polymer (B), 0.01 to 10 parts by weight of an alkylene glycol polymer (C) bearing primary or secondary amino groups and having a number average molecular weight of 400 to 500,000 and 0.1 to 20 parts by weight of an inorganic filler (D), and melt-kneading the mixture.

Composition de résine polyacétalique qui présente des propriétés améliorées de compatibilité, de dispersibilité et d'adhérence interfaciale entre ladite résine et un polymère oléfinique, ainsi que d'excellentes propriétés de friction et d'abrasion. Ladite composition est préparée par mélange de 100 parties en poids d'une résine polyacétalique (A) avec 0,5 à 100 parties en poids d'un polymère oléfinique modifié particulier (B), 0,01 à 10 parties en poids d'un polymère alkylène glycol (C) portant des groupes amino primaires ou secondaires et ayant un poids moléculaire moyen en nombre de 400 à 500.000, et 0,1 à 20 parties en poids d'une charge inorganique (D), puis par pétrissage du mélange fondu.

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