Electrical and electronic components made of a polyamide composi

Details Electrical and electronic components made of a polyamide composi Electrical and electronic components made of a polyamide composi

1998-03-19

1999-10-12

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528313, 528323, 528331, 528332, 528335, 528336, 428901, C08G 6926, C08G 7300

Patent

active

059656891

ABSTRACT:
The invention relates to electrical and electronic components made of a polyamide composition and possessing an improved resistance under soldering conditions, particularly when the surface mounting technique is used. This is achieved by using a polyamide composition whose main chain essentially consists of units derived from aliphatic dicarboxylic acids and diamines or .alpha.,.omega.-amino acids, and in which 1-40% of the chain units are derived from 1,6-cyclohexanedicarboxylic acid and an aliphatic diamine, or from 1,4-cyclohexanediamine and an aliphatic dicarboxylic acid.
As a result, the temperature at which blisters are formed during soldering by the infrared method is 20-30.degree. C. higher than in the case of the homo-polyamide.

REFERENCES:
patent: 3950310 (1976-04-01), Bouboulis
patent: 4398012 (1983-08-01), Merrill et al.
patent: 4822852 (1989-04-01), Wittmann et al.
patent: 4925914 (1990-05-01), Dolden et al.

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