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US 2003/0119988 A1Published application
TPE composition that exhibits excellent adhesion to textile fibers
AssigneeAdvanced Elastomer Systems, L.P.
InventorsJim Johnson, Marvin Hill
Life of this patent
Estimating the term…
Abstract
A combination of a low flexural modulus and low crystallinity polyolefin and a functionalized polyolefin were found to result in an olefin composition with excellent adhesion to metals and polar polymers (e.g. polyesters, polyamides, etc) especially fibers therefrom. When these two polyolefins were added to a thermoplastic vulcanizate (e.g. used to partially or fully replace the semicrystalline polyolefin of a thermoplastic vulcanizate), the thermoplastic vulcanizate was found to have the necessary adhesion to form fiber reinforced thermoplastic vulcanizate.
Claims23
A thermoplastic elastomer having adhesion to metal, molded polar polymers and textile fibers, said thermoplastic elastomer comprising;
- a) a dynamically crosslinked rubber,
- b) from about 20 to about 400 parts of a first polyolefin having from about 10 to about 26.5 weight percent crystallinity and a flexural modulus (tangent) from about 5,000 psi (34.5 MPa) to about 20,000 psi (138 MPa), and
- c) from about 10 to about 200 parts by weight a functionalized polyolefin having pendant polar functional groups, wherein said polar functional groups are present on from about 0.5 to about 3.5 mole percent of the total repeating units of said functionalized polyolefin and said functionalized polyolefin is derived from polymerizing at least one monoolefin into a semicrystalline polymer or is derived from hydrogenating the polydiene blocks of a block copolymer, and
- wherein said parts by weight are based upon 100 parts by weight of crosslinked rubber.
1 more element
A thermoplastic elastomer having adhesion to metal, molded polar polymers and textile fibers, said thermoplastic elastomer comprising;
- a) a dynamically crosslinked rubber,
- b) from about 5 to about 200 parts of a first polyolefin having at least 80 mole percent repeating units from a single monoolefin monomer and less than 10 weight percent crystallinity, and
- c) from about 10 to about 200 parts by weight a functionalized polyolefin having pendant polar functional groups, wherein said polar functional groups are present on from about 0.5 to about 3.5 mole percent of the total repeating units of said functionalized polyolefin and said functionalized polyolefin is derived from polymerizing at least one monoolefin into a semicrystalline polymer or is derived from hydrogenating the polydiene blocks of a block copolymer, and
- wherein said parts by weight are based upon 100 parts by weight of crosslinked rubber.
1 more element
A composite article from a thermoplastic vulcanizate and a polar polymer, said article comprising;
- a) a polar polymer or a metal having a tensile modulus of at least 130,000 psi and being in the form of a molded article, sheet, or fibers;
- and
- b) a thermoplastic vulcanizate including,
- (1) a crosslinked rubber
- (2) from about 10 to about 400 parts by weight of a first polyolefin having a flexural modulus from about 5,000 psi to about 20,000 psi and a crystallinity of from about 10 to about 26.5 weight percent, and
- (3) from about 10 to about 200 parts by weight of a functionalized polyolefin having pendent polar functional groups, wherein said functional groups are present from about 0.5 to about 3.5 mole percent of the total repeating units of said functionalized polyolefin and said functionalized polyolefin is derived from polymerizing at least one monoolefin into a semicrystalline polymer or is derived from hydrogenating the polydiene blocks of a block copolymer,
- wherein said crosslinked rubber, said functionalized polyolefin, and said first polyolefin are interdispersed such that the thermoplastic vulcanizate is melt processable in conventional thermoplastic processing equipment, and wherein said parts by weight are based upon 100 parts by weight of total rubber.
4 more elements
A composite article from a thermoplastic vulcanizate, said article comprising;
- a) a polar polymer or a metal having a tensile modulus of at least 130,000 psi and being in the form of a molded article, sheet, or fibers;
- and
- b) a thermoplastic vulcanizate including,
- (1) a crosslinked rubber
- (2) from about 5 to about 200 parts by weight of a first polyolefin having at least 80 mole percent of repeating units from a single monoolefin monomer and crystallinity of less than 10, and
- (3) from about 10 to about 200 parts by weight of a functionalized polyolefin having pendent polar functional groups, wherein said functional groups are present from about 0.5 to about 3.5 mole percent of the total repeating units of said functionalized polyolefin and said functionalized polyolefin is derived from polymerizing at least one monoolefin into a semicrystalline polymer or is derived from hydrogenating the polydiene blocks of a block copolymer,
- wherein said crosslinked rubber, said functionalized polyolefin, and said first polyolefin are interdispersed such that the thermoplastic vulcanizate is melt processable in conventional thermoplastic processing equipment and
- wherein said parts by weight are based upon 100 parts by weight of rubber.
5 more elements
In process for forming a fiber and/or sheet reinforced thermoplastic vulcanizate including;
- a) contacting a fiber and/or sheet with a thermoplastic vulcanizate in molten form,
- b) forming said thermoplastic vulcanizate into a desired shape and,
- c) subsequently cooling said thermoplastic vulcanizate;
- the improvement wherein said thermoplastic vulcanizate comprises;
- d) a crosslinked rubber,
- e) from about 10 to about 400 parts by weight of a first polyolefin having low crystallinity from about 10 to about 26.5 weight percent and low flexural modulus from about 5,000 psi to about 20,000 psi, and
- f) from about 10 to about 200 parts by weight a functionalized polyolefin having pendant polar functional groups, wherein said polar functional groups are present on from about 0.5 to about 3.5 mole percent of the total repeating units of said functionalized polyolefin and said functionalized polyolefin is derived from polymerizing at least one monoolefin into a semicrystalline polymer or is derived from hydrogenating the polydiene blocks of a block copolymer, wherein said parts by weight are based upon 100 parts by weight of crosslinked rubber,
- wherein said polyolefin having a low crystallinity and low flexural modulus is present from about 10 to about 350 parts by weight per 100 parts by weight of total semicrystalline polyolefins and said functionalized polyolefin is present from about 5 to about 75 parts by weight per 100 parts by weight of total semicrystalline polyolefins.
5 more elements
A hot-melt composition with adhesion to polar polymer, said composition comprising:
- a) from about 20 to about 90 parts by weight of a first polyolefin with crystallinity from about 10 to about 26.5 weight percent and a flexural modulus from about 5000 to about 20000 psi and,
- b) from about 10 to about 60 parts by weight of a functionalized polyolefin having from about 0.5 to about 3.5 mole percent of functional groups based upon total repeating units in said functionalized polyolefin and said functionalized polyolefin is derived from polymerizing at least one monoolefin into a semicrystalline polymer or is derived from hydrogenating the polydiene blocks of a block copolymer.
A process for preparing a thermoplastic vulcanizate having adhesion to metal and polar polymers, said process comprising
- a) blending a functionalized polyolefin having from about 0.5 to about 3.5 mole percent of polar functional groups with a thermoplastic vulcanizate,
- wherein, if said thermoplastic vulcanizate does not include at least 10 parts by weight of a first polyolefin having from about 10 to about 26.5 weight percent crystallinity and a modulus from about 5,000 psi to about 20,000 psi, further including blending in from about 10 to about 400 parts of said first polyolefin.
Dependencies are inferred from the claim text.