Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
1997-10-20
2001-12-25
Lilling, Herbert J. (Department: 1651)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S474000, C524S476000, C524S490000, C524S505000, C525S095000, C525S098000
Reexamination Certificate
active
06333374
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to novel gel compositions, articles, and method of making same.
BACKGROUND OF THE INVENTION
The closest known prior arts are: U.S. Pat. Nos. 3,683,104; 3,843,568; 4,351,913; 5,421,874; 5,422,378; 5,592,706; and 5,626,657. Both '104 and '568 are directed to mixtures of petrolatum, partially crosslinked polymers and hollow synthetic thermoplastic particles of styrene and acrylonitrile. U.S. Patent '378 is directed to styrene foam made by the use of a blowing agent. Patent '913 is directed to waterproofing cable filling materials of block copolymers dissolved in oils with a minimal amount of hollow microspheres. The other '874, '706, and '657 patents are directed to free moving, sliding microsphere-liquid and liquid polymer mixtures. In particular, U.S. Patent '657 is directed to conforming, movable, flowable, shape changing, shearable, ambient temperature microsphere-liquid mixtures. It teaches forming a SEBS visco-elastic oil fluid at between near 350° F. to 365° F. and held at 365° F. for about four hours with continued agitation. After the visco-elastic fluid has cooled to ambient temperature, acrylic PM 6545 microspheres are added to the fluid to make for example a composite mixture having a specific gravity of about 0.12. The resulting mixture has little or no memory, is readily flowable and shearable, does not have shape memory, and the fluid amount of the mixture is insufficient to disperse the microspheres in the lubricant. Microspheres suitable for use include expanded or unexpanded DE (091-80) phenolic microspheres from Expandcel, Inc. U.S. There is no suggestion in '657, no teaching, no reason that any unexpanded microspheres after mixing with lubricant is ever heated to a sufficient temperature necessary to expand the unexpanded microspheres. It appears that the unexpanded microsphere lubricant mixture is used as is without any heating to expand the microspheres. U.S. Pat. No. 5,590,430 is directed to gel filled deformable cushion and padding.
SUMMARY OF THE INVENTION
I have unexpectedly discovered novel compositions and articles comprising a heat formable, fluffy, light, soft, airy, solid, strong elastic gelatinous elastomer composition, G
n
, exhibiting substantially complete resistance to elastic deformation, capable of substantial complete shape-memory recovery and being dimensionally stable, wherein when n is a subscript of G, n denotes the same or a different gel rigidity. The fluffy, elastic solid gelatinous elastomer composition, G
n
, is formed from (I) 100 parts by weight of at least one or more high viscosity block copolymer; (II) about 300 to about 1,600 parts by weight of a plasticizing oil; (III) a selected amount of one or more heat expandable plastic or synthetic particulate material dispersed in an ordered, random, homogeneous, nonhomogeneous, stratified, partially stratified or one or more separated phases. The dispersed particulate material is capable of producing a predetermined volume of closed cell particulate dispersion forming said G
n
having a density of at least less than about 0.60 g/cm
3
, a gel rigidity of from about 20 to about 3,000 gram Bloom, and an elongation of at least 200%. The G
n
can also be formed with or physically interlocked with a selected material M
n
to form a composite comprising combinations of G
n
and M
n
, any sequential additions or permutations of said combinations M
n
G
n
, G
n
M
n
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n
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n
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n
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n
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n
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n
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n
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n
, including M
n
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n
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n
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M
n
M
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M
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, G
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n
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, M
n
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n
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n
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n
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n
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n
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n
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, M
n
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n
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n
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n
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n
, G
n
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n
M
n
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n
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n
M
n
, G
n
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n
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n
M
n
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n
, M
n
M
n
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n
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n
M
n
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n
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n
, M
n
G
n
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n
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n
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n
M
n
, G
n
M
n
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n
M
n
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n
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n
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n
, M
n
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n
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n
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n
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n
M
n
G
n
, G
n
M
n
M
n
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n
M
n
M
n
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n
, M
n
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n
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n
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n
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n
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n
M
n
, G
n
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n
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n
M
n
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n
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n
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n
M
n
, G
n
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n
M
n
M
n
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n
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n
M
n
M
n
, G
n
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n
M
n
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n
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n
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n
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n
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n
, M
n
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n
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n
M
n
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n
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n
M
n
, G
n
M
n
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n
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n
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n
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n
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n
M
n
G
n
, G
n
G
n
M
n
G
n
M
n
G
n
M
n
G
n
G
n
, or G
n
M
n
G
n
M
n
G
n
M
n
G
n
M
n
G
n
M
n
G
n
M
n
G
n
M
n
G
n
, wherein when n is a subscript of M, n is the same or different selected from the group consisting of foam, plastic, fabric, metal, concrete, wood, glass, ceramics, synthetic resin, synthetic fibers or refractory materials. The (I) block copolymer component(s) forming the G
n
of the invention is a linear, multi-arm, branched, or star shaped copolymer of the general configuration poly(styrene-ethylene-butylene-styrene), poly(styrene-ethylene-propylene-styrene), poly(styrene-ethylene-styrene), poly(styrene-butylene-styrene), poly(styrene-ethylene-ethylene/butylene-styrene), poly(styrene-ethylene-ethylene/propylene-styrene), poly(styrene-butylene-ethylene/propylene-styrene), poly(styrene-butylene-ethylene/butylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene-styrene), poly(styrene-ethylene-ethylene/butylene-butylene-styrene), poly(styrene-butylene-ethylene/propylene-butylene-styrene), poly(styrene-butylene-ethylene/butylene-butylene-styrene), poly(styrene-ethylene-butylene-ethylene/butylene-styrene), poly(styrene-ethylene-butylene-ethylene/propylene-styrene), poly(styrene-ethylene/butylene-ethylene/propylene-styrene), poly(styrene-ethylene-ethylene/butylene-ethylene/propylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene/butylene-styrene), poly(styrene-butylene-ethylene/butylene-ethylene/propylene-styrene), poly(styrene-butylene-ethylene/propylene-ethylene/butylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene-ethylene/propylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene-ethylene/butylene-styrene), poly(styrene-ethylene/propylene-butylene-ethylene/propylene-styrene), poly(styrene-butylene-ethylene/butylene-butylene-ethylene/butylene-styrene), poly(styrene-butylene-ethylene/butylene-butylene-ethylene/propylene-styrene), poly(styrene-ethylene-ethylene/butylene-butylene-ethylene/propylene-styrene), poly(styrene-ethylene-ethylene/propylene-butylene-ethylene/butylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene-ethylene/propylene-ethylene-styrene), poly(styrene-butylene-ethylene/propylene-butylene-ethylene/propylene-butylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene-ethylene/butylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene-ethylene/propylene-ethylene/butylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene-ethylene/propylene-ethylene-styrene), poly(styrene-ethylene-ethylene/propylene-ethylene/butylene-ethylene/propylene-ethylene/butylene-butylene-styrene), poly(styrene-ethylene-butylene)
n
, poly(styrene-ethylene-propylene)
n
, poly(styrene-ethylene)
n
, poly(styrene-butylene)
n
, poly(styrene-ethylene-ethylene/butylene)
n
, poly(styrene-ethylene-ethylene/propylene)
n
, poly(styrene-butylene-ethylene/propylene)
n
, poly(styrene-butylene-ethylene/butylene)
n
, poly(styrene-ethylene-ethylene/propylene-ethylene)
n
, poly(styrene-ethylene-ethylene/butylene-butylene)
n
, poly(styrene-butylene-ethylene/propylene-butylene)
n
, poly(styrene-butylene-ethylene/butylene-butylene)
n
, poly(styrene-ethylene-butylene-ethylene/butylene)
n
, poly(styrene-ethylene-butylene-ethylene/propylene)
n
, poly(styrene-ethylene/butylene-ethylene/propylene)
n
, poly(styrene-ethylene-ethylene/butylene-ethylene/propylene)
n
, poly(styrene-ethylene-ethylene/propylene-ethylene/butylene)
n
, poly(styrene-butylene-ethylene/butylene-ethylene/propylene)
n
, poly(sty
Applied Elastomerics, Inc.
Lilling Herbert J.
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