Fluorine-containing resin composition for optical use

Details Fluorine-containing resin composition for optical use Fluorine-containing resin composition for optical use

1986-02-05

1986-10-14

Seccuro, Carman J.

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

Synthetic resins

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

525200, C08L 2716, C08L 3304

Patent

active

046173501

ABSTRACT:
A thermoplastic resin composition useful for optical purposes is obtained by blending a polymer of an acrylic ester with a copolymer of vinylidene fluoride (VDF) and hexafluoroacetone (HFA). The blending ratio is not limited, though very good transparency is ensured when the acrylic ester polymer amounts to at least 20 wt %. It is preferable to use a polymer of an acrylic ester with an alkyl alcohol having not more than 4 carbon atoms. When using the resin composition in optical fibers or cylindrical lenses it is suitable to use a VDF/HFA copolymer containing not more than 20 mol % of HFA. The refractive index of a member formed of the resin composition is lower than that of the acrylic ester polymer and falls in the range of about 1.37-1.48. The resin composition is soluble in various organic solvents and accordingly can be used for adhesing and coating purposes too. Besides, this resin composition serves as a thermochromic material.

REFERENCES:
patent: 3524906 (1970-08-01), Schmitt et al.
patent: 4091055 (1978-05-01), Kidoh et al.

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