C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/4908
C08L 9/06 (2006.01) C08L 15/02 (2006.01) C08L 23/00 (2006.01) C08L 23/12 (2006.01) C08L 23/16 (2006.01) C08L 23/28 (2006.01)
Patent
CA 1271286
ABSTRACT A method of producing compounds in which the rubber phase contains a polyolefin and a halobutyl rubber, which is partially crosslinked, to which composition is then added additional polyolefin and a vulcanizable olefinic rubber, which is then further crosslinked using organic peroxides, and then blended with a styrenic rubber. The TPE compounds incorporate (A) polypropylene 10-90 weight parts (wt. pts.), (B) halobutyl rubber 90-10 wt. pts. (where (A) + (B) = 100), (C) an olefinic rubber 10- 120 wt. pts., (D) mineral oil softener 5-120 wt. pts., which are then treated thermally in the presence of (E) MOx and/or MCI, to composition of 100 weight parts is added (F) polyolefin 100-600 wt. pts., and (G) a vulcanizable olefinic rubber 50-500 wt. pts. The resulting blend is then thermally treated with (H) organic peroxide(s), to which blend of 100 wt. pts. is then added and uniformly dispersed (I) 5-150 wt. pts. of styrenic rubber. The method produces thermoplastic elastomer com- positions which can be molded into large parts with smooth surfaces that accept paint well, have a good balance of flexibility and strength.
530928
Baba Isao
Komatsu Masato
Yamamoto Noboru
Borden Ladner Gervais Llp
Toa Nenryo Kogyo K.k.
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