Oriented gel and oriented gel articles
AssigneeApplied Elastomerics, Inc.
InventorJohn Y. Chen
Life of this patent
Estimating the term…
Abstract
Oriented gels aliened by controlled stretching during the gel's transition from a heated, extremely viscous, non melting, non flowing state and the cooled solid gel state produces strong gels which are found to have greater tensile strength than gels of the same rigidity which have not been stretched to a selected degree during its heating and cooling histories. Gels which are selectively stretched during its (non melt flowing) heated state and rapidly cooled by flowing air, cold liquid bath or in contact with a cool surface exhibit optical birefringence when viewed under plane-polarized light.
Claims8
A composition comprising:
- an optically birefringent, oriented gel formed from (a) 100 parts by weight of one or more high viscosity linear, multi-arm, branched, or star shaped block copolymers;
- (b) from about 300 to about 1,600 parts by weight of a plasticizing oil;
- said composition exhibits birefringence when view under crossed polarizers.
A composition comprising:
- an optically birefringent, oriented gel formed from (a) 100 parts by weight of one or more multiarm poly(styrene-ethylene-butylene)n, poly(styrene-ethylene-propylene)n block copolymer or a mixture thereof, n being a number 2 or greater;
- (b) from about 300 to about 1,600 parts by weight of a plasticizing oil;
- said composition exhibits birefringence when view under crossed polarizers.
A composition comprising:
- an optically birefringent, oriented gel formed from (a) 100 parts by weight of a linear poly(styrene-ethylene-ethylene-propylene-styrene) block copolymer;
- (b) from about 300 to about 1,600 parts by weight of a plasticizing oil;
- said composition exhibits birefringence when view under crossed polarizers.
Dependencies are inferred from the claim text.