Gelatinous elastomeric optical lens, light pipe, comprising a specific block copolymer and an oil plasticizer

Patent 4618213 Issued on October 21, 1986. Estimated Expiration Date:

January 18, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2830402

Absorbent article with adhesive strip
Patent #: 4136699
Issued on: 01/30/1979
Inventor: Collins , et al.

Filled electrical cable
Patent #: 4176240
Issued on: 11/27/1979
Inventor: Sabia

Filled cables
Patent #: 4259540
Issued on: 03/31/1981
Inventor: Sabia

Thermoplastic elastomer gelatinous compositions
Patent #: 4369284
Issued on: 01/18/1983
Inventor: Chen

Coated optical fiber Patent #: 4492428
Issued on: 01/08/1985
Inventor: Levy

Inventor

Chen, John Y.

Assignee

Applied Elastomerics, Incorporated

Application

No. 06/572172 filed on 01/18/1984

US Classes:

385/144, Of waveguide cladding446/385, Formed from specific material446/486, RESILIENT TOY OR ACTUATOR524/476, Two or more hydrocarbons524/505Solid block or solid block-type copolymer with other solid polymer, SICP or SPFI

Examiners

Primary: Lilling, Herbert J.

International Classes

A61C 15/00 (20060101)
A61C 15/04 (20060101)
C08K 5/01 (20060101)
C08L 53/00 (20060101)
C08L 53/02 (20060101)
C08K 5/00 (20060101)
C08L 51/00 (20060101)

Abstract

A novel gelatinous composition is disclosed which contains an intimate melt blend admixture of poly(styrene-ethylene-butylene-styrene) triblock copolymer having said styrene end block to ethylene and butylene center block ratio within the range of from between 31:69 to 40:60, and high levels of a plasticizing oil.The gelatinous composition is transparent and have a novel combination of properties including unexpectedly high elongation and tensile strength and excellent shape retention after extreme deformation under high-velocity impact and stress conditions. The gelatinous products of this invention are soft, flexible, and have elastic memory, characterized by a gel rigidity of from about 20 gram to about 700 gram Bloom. These and other properties are particularly essential for the gelatinous composition to have utility as toys, therapeutic hand exercising grips, shock absorbers, acoustical isolators, and other uses.