Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1986-02-10
1987-12-29
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
521185, 524606, C08G 6932
Patent
active
047162155
ABSTRACT:
A new type of aromatic polyamide powder including a large number of fine coalescible paticles which have an average size of from 0.1 to 10 .mu.m, which include at least one aromatic amide polymer including 40 to 100 molar % of recurring m-phenylene isophthalamide units and 0 to 60 molar % of at least one other type of additional recurring aromatic amide units, for example, m-phenylene terephthalamide units, and which coalesce with each other to form porous agglomeraters having an average size of from 10 to 400 .mu.m and a surface area of from 1 to 20 m.sup.2 /g, and can be compression molded, optionally in mixture with a reinforcing additive, for example, aromatic polyamide fibers having a length of 3 mm or less, at a temperature of 200.degree. to 400.degree. C. under a pressure of 300 to 1000 kg/cm.sup.2 for 20 minutes to 5 hours, to produce shaped articles having excellent mechanical properties and appearance.
REFERENCES:
patent: 3413394 (1968-11-01), Jordan
patent: 3925323 (1975-12-01), Turnbull
patent: 3955236 (1976-06-01), Turnbull
patent: 4036907 (1977-07-01), Turnbull
patent: 4283361 (1981-08-01), Longworth
Fujie Hiroshi
Matsui Hideo
Noma Takashi
Anderson Harold D.
Teijin Limited
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