US 5,508,334 A · Thermoplastic elastomer gelatinous compositions and articles

Abstract

Novel gelatinous compositions and articles are fromed from an intimate melt blend admixture of poly(styrene-ethylene-butylene-styrene) triblock copolymer 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, components for cushions, and other uses.

Claims17

Dependent claims

A gelatinous elastomer composition comprising:

(a) 100 parts by weight of a high viscosity triblock copolymer of the general configuration poly(styrene-ethylene-butylene-styrene);
(b) from about 300 to about 1,600 parts by weight of a plasticizing oil;
and in combination with
(c) a minor amount of at least one or more homopolymers or copolymers selected from the group consisting of:
poly(styrene-butadiene), poly(styrene-isoprene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-butylene), polystyrene, polybutylene, polypropylene or polyethylene, wherein said copolymer is a linear, branched, multiarm, or star shaped copolymer;
said composition characterized by a gel rigidity of from about 20 to about 700 gram Bloom.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/152,735Filed 15 Nov 1993 · continuation in part

Priority

17 Mar 1977

Granted

16 Apr 1996

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C08L 51/00
Compositions of graft polymers in which the grafted component is obtained by
A61C 15/041
Dental floss; Floss holders: dental floss
A63H 33/185
Throwing or slinging toys, e.g. flying disc toys: aerial toy rotating automatically when descending under gravity
C08K 5/01
Use of organic ingredients: hydrocarbons

Family

Serial778,343Parent of this continuation-in-part · filed 17 Mar 1977

Serial815,315Parent of this continuation-in-part · filed 13 Jul 1977

Serial916,731Parent of this continuation-in-part · filed 19 Jun 1978

Serial134,977Parent of this continuation-in-part · filed 28 Mar 1980

Serial458,703Parent of this continuation-in-part · filed 17 Jan 1983

US 4,369,284 AParent of this continuation-in-part · filed 18 Jan 1983

Serial921,752Parent of this continuation-in-part · filed 21 Oct 1986

US 4,618,213 AParent of this continuation-in-part · filed 21 Oct 1986

Serial211,426Parent of this continuation-in-part · filed 24 Jun 1988

Serial527,058Parent of this continuation-in-part · filed 21 May 1990

Serial705,711Parent of this continuation-in-part · filed 23 May 1991

Serial705,096Parent of this continuation-in-part · filed 23 May 1991

Serial876,118Parent of this continuation-in-part · filed 29 Apr 1992

Serial935,540Parent of this continuation-in-part · filed 24 Aug 1992

Serial957,290Parent of this continuation-in-part · filed 6 Oct 1992

Serial114,688Parent of this continuation-in-part · filed 30 Aug 1993

Serial572,172Parent of this continuation-in-part · filed 18 Jan 1994

US 5,262,468 AParent of this continuation-in-part

US 5,153,254 AParent of this continuation-in-part

Serial527,058Parent of this continuation

US 5,508,334 AThis patent

From the US filing history. Foreign family members aren’t listed.

Thermoplastic elastomer gelatinous compositions and articles

Life of this patent

Thermoplastic elastomer gelatinous compositions and articles

Life of this patent

Abstract

Claims17