Polyamide molding compounds for producing optical lenses

Details Polyamide molding compounds for producing optical lenses Polyamide molding compounds for producing optical lenses

2006-05-30

2006-05-30

Hightower, P. Hampton (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C528S331000, C528S332000, C528S335000, C528S336000, C528S338000, C528S339000, C528S340000, C528S346000, C528S347000, C524S538000, C524S606000, C524S607000, C525S422000, C525S432000, C428S411100, C428S474400, C264S001100, C264S001600, C264S001900, C264S002700, C264S299000, C264S319000, C264S320000, C264S328100

Reexamination Certificate

active

07053169

ABSTRACT:
The invention relates to new thermoplastically processible transparent polyamide molding materials based on copolyamides containing diamines and dicarboxylic acids with aromatic cores which exhibit a high index of refraction nD20over 1.59 and a low density under 1.3 g/cm3. At the same time, a low birefringence, high hardness, and scratchresistance are achieved. The polyamide molding materials are fabricated by means of conventional pressure reactors (autoclaves) according to a modified technique. The granulate that is produced from the inventive molding materials is reshaped by thermoplastic processes like injection molding, particularly in multichamber cavity tools. The invention also relates to the utilization of the inventive molding materials for producing optical lenses.

REFERENCES:
patent: 3627736 (1971-12-01), Raum et al.
patent: 4014957 (1977-03-01), Kirsch et al.
patent: 4731421 (1988-03-01), Hoppe et al.
patent: 4847356 (1989-07-01), Hoppe et al.
patent: 5028462 (1991-07-01), Matlack et al.
patent: 5049156 (1991-09-01), Higashi et al.
patent: 5700900 (1997-12-01), Hewel et al.
patent: 5886087 (1999-03-01), Dalla Torre
patent: 5917001 (1999-06-01), Laederach et al.
patent: 6063862 (2000-05-01), Idemura et al.
patent: 6204355 (2001-03-01), Dalla Torre et al.
patent: 6528560 (2003-03-01), Buhler
patent: 6831137 (2004-12-01), Torre et al.
patent: 6943231 (2005-09-01), Buhler

Affiliated with

Also associated with

Rating

Polyamide molding compounds for producing optical lenses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyamide molding compounds for producing optical lenses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyamide molding compounds for producing optical lenses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3619477