Foam processable rubber compositions and vulcanized rubber...

C - Chemistry – Metallurgy – 08 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08L 23/08 (2006.01) C08L 23/16 (2006.01)

Patent

CA 2221081

Disclosed is a foam processable rubber composition which comprises an ethylene/.alpha.-olefin of 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber (A), a crystalline polyolefin resin (B) having a melting point of 100 to 150 °C and a foaming agent (C), in specific proportions. The copolymer rubber (A) has an ethylene/.alpha.-olefin molar ratio of 60/40 to 80/20, an intrinsic viscosity (.pi.), as measured in decalin at 135 °C, of 0.7 to 2 dl/g, and an iodine value of 10 to 50. A vulcanized rubber foam-molded product can be obtained by vulcanizing and foaming the rubber composition. The rubber composition can provide vulcanized rubber foam-molded products having excellent vulcanization properties such as weathering resistance, heat resistance, ozone resistance and tear strength. Besides, the rubber composition exhibits excellent precision moldability and productivity of vulcanized rubber foam-molded products in transfer molding, injection molding and cast molding.

Composition pour caoutchouc mousse transformable, à base d'éthylène/alpha-oléfine de 3 à 20 atomes de carbone/caoutchouc de copolymère de polyène non conjugué (A), d'une résine de polyoléfine cristallisée (B) à point de fusion compris entre 100 et 150 degrés C, et d'un gonflant (C), dans des proportions déterminées. Le caoutchouc de copolymère (A) a un rapport molaire éthylene/alpha-oléfine de 60/40 à 80/20, une viscosité intrinsèque (pi) de 0,7 à 2 dl/g, mesurée à 135 degrés C, et un indice d'iode de 10 à 50. Un produit moulé de caoutchouc mousse vulcanisé est obtenu par vulcanisation et gonflement de la composition de caoutchouc. Ce type de produit possède d'excellentes propriétés de vulcanisation, notamment la résistance aux intempéries, à la chaleur, à l'ozone et à la déchirure. En outre, la composition permet d'obtenir un excellent moulage de précision et un excellent rendement en ce qui concerne les produits moulés en caoutchouc mousse vulcanisé, fabriqués par moulage de type transfert, injection ou coulée.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Foam processable rubber compositions and vulcanized rubber... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foam processable rubber compositions and vulcanized rubber..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foam processable rubber compositions and vulcanized rubber... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1578396

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.