Polymer modified gums

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/28 (2006.01) C08C 19/14 (2006.01) C08F 8/22 (2006.01) C08K 3/04 (2006.01) C08L 15/02 (2006.01)

Patent

CA 2169558

A method for producing a modified gum by direct fluorination of a polymer gum. The polymer gum must be substantially uncross-linked prior to fluorination. The degree of fluorination is controlled to provide fluorinated gums having different degrees of fluorine uptake and available cross-linking sites. The resulting modified gum can be cured alone or in combination with one or more supplemental polymers to form a wide variety of elastomeric articles. Additives, such as fillers, lubricants and plasticizers may also be combined with the modified gum and added polymers during compounding and final curing.

Procédé de fabrication d'une gomme modifiée par fluoration directe d'un gomme polymère. La gomme polymère doit être pratiquement non réticulée avant la fluoration. Le degré de fluoration est régulé de manière à obtenir des gommes fluorées possédant différents degrés d'absorption de fluor et des sites de réticulation disponibles. La gomme modifiée obtenue peut être durcie seule ou en combinaison avec un ou plusieurs polymères supplémentaires, de façon à produire une grande variété d'articles élastomères. Des additifs, tels que des charges, des lubrifiants et des plastifiants peuvent également être combinés à la gomme modifiée et aux polymères ajoutés pendant la mise en composé et le durcissement final.

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