Optical plastics material using methacrylic resin and fluorocopo

Details Optical plastics material using methacrylic resin and fluorocopo Optical plastics material using methacrylic resin and fluorocopo

1985-08-22

1986-05-27

Ziegler, Jacob

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

351159, 528220, 528401, C08L 2716, C08L 3308, C08L 3310

Patent

active

045916160

ABSTRACT:
Copolymers of vinylidene fluoride (VDF) and hexafluoroacetone (HFA) exhibit lower indices of refraction than polymethyl methacrylate (PMMA) and can be blended well with PMMA at widely variable ratios. The obtained blends are thermoplastic resins which can easily be moulded or extruded into desirably shaped and transparent members having good mechanical properties and weather resistance. The blends are soluble in various organic solvents. It is preferable that the amount of HFA in the copolymer is not more than 90 mol %. The refractive index of a member formed of the blend falls in the range of about 1.37-1.49 and can freely be controlled by controlling the weight ratio of PMMA to VDF/HFA copolymer. The blend is useful for optical fibers, cylindrical lenses, etc.

REFERENCES:
Chemical Abstracts, vol. 101, No. 22, 11/28/84; p. 97; Abstract No. 193849u; JP 59/35,257; 03 Aug '84, "Vinylidene Fluoride Polymer Solutions".

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