Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1988-03-24
1989-04-25
Lilling, Herbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524431, 524435, 524440, 524494, 524496, 524546, 525153, 525165, 525178, 525189, 526255, B29C 1700, B29C 300, C08K 310
Patent
active
048248983
ABSTRACT:
A shaped article comprised of a tetrafluoroethylene polymer with a number average molecular weight of at least about 10.sup.6 which exhibits specific heat shrinking properties represented by an average maximum expansion ratio of from 2 to 10, a least maximum shrinkage ratio of 0.71 or less, an orientation release stress at 200.degree. C. of less than 5 Kg/cm.sup.2 and a shrinking starting temperature of at least 80.degree. C. The shaped article has excellent compression creep resistance, compression resistance, impact strength, dimensional stability, gas barrier property and tensile strength. Accordingly, it can be advantageously utilized as a sealant, a lining material, a bearing pad, a sliding pad, etc.
REFERENCES:
patent: 3953412 (1976-04-01), Saito et al.
patent: 4194040 (1980-03-01), Breton et al.
patent: 4388259 (1983-06-01), Jewell et al.
patent: 4408007 (1983-10-01), Kuhls et al.
patent: 4598011 (1986-07-01), Bowman
Kaneko Yasushi
Kataoka Hiroshi
Sukigara Masayuki
Asahi Kasei Kogyo Kabushiki Kaisha
Lilling Herbert J.
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