Polyamide

Details Polyamide Polyamide

2005-08-30

2005-08-30

Hightower, P. Hampton (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C528S335000, C528S339000, C528S344000, C528S346000, C528S347000, C524S606000

Reexamination Certificate

active

06936682

ABSTRACT:
A polyamide characterized in that the polyamide is obtained by thermal polycondensation of (a) dicarboxylic acid components comprising 10 to 80% by mole in total carboxylic acid components of 1,4-cyclohexanedicarboxylic acid having a trans/cis molar ratio of 50/50 to 97/3 and (b) an aliphatic diamine component is disclosed. The alicyclic polyamide having 1,4-cyclohexanedicarboxylic acid in a backbone thereof as a dicarboxylic acid unit, which is suitable as materials for various uses such as automotive parts, electric/electronics parts, industrial materials, engineering materials and daily household goods, and superior in heat resistance, low water absorption, light resistance, moldability and light weight, as well as superior in toughness, chemical resistance and appearance, and molded articles thereof.

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Vanhaecht, Bert et al, Journal of Polymer Science, Polymer Chemistry, Jan. 2001, pp. 833-840, vol. 39, No. 6, part A.

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