Patent US4124562A successfully refreshed from Google Patents.
US4124562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin composition containing a novel modified filler
Assignee: Mitsubishi Chemical Corp
•
Filing: 1977-05-19
•
Granted: 1978-11-07
•
Expires: 1997-05-19
Abstract
Abstract A filled polyolefin composition is described based upon a polyolefin resin filled with a mechanico-chemically modified filler. The filler, which may be the usual filler material, is modified by comminution, by mechanically exposing fresh surfaces of the original filler particles in the presence of a polymer of a vinyl monomer. The vinyl monomer should have at least one polar group capable of bonding with the freshly exposed surfaces of filler material as they are formed and exposed during the mechanical operation. The process for the production of the modified filler is included.
Inventors
- 👤 Hiroshi Yui
- 👤 Kazuhide Hayama
- 👤 Hiroshi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/006; C08; C08K; C08K9/00; C08K9/04; C08K9/08; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/60; C01P2006/90
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
161 words
A polyolefin composition comprising a polyolefin resin matrix having incorporated therein a modified filler comprising a particulate frangible filler material having a polymer which is a homopolymer or copolymer of a vinyl monomer bearing polar groups, directly engrafted onto freshly mechanically-exposed surfaces of said filler material, said modified filler being obtained by mixing a frangible filler with said polymer and being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer, comminuting said filler to a particle size of about 0.5μ to less than 5μ while said filler is mixed with said polymer at a temperature of about 20°-25° C., the initial particle size of said filler being about 5 to 100 times larger than that of the comminuted filler, said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer.
Claim 2
Dependent Claim
161 words
A polyolefin composition comprising a polyolefin resin matrix having incorporated therein a modified filler comprising a particulate frangible filler material having a polymer which is a homopolymer or copolymer of a vinyl monomer bearing polar groups, directly engrafted onto freshly mechanically-exposed surfaces of said filler material, said modified filler being obtained by mixing a frangible filler with said polymer and being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer, comminuting said filler to a particle size of about 0.5μ to less than 5μ while said filler is mixed with said polymer at a temperature of about 20°-25° C., the initial particle size of said filler being about 5 to 100 times larger than that of the comminuted filler, said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer.
Claim 3
Dependent Claim
55 words
The composition according to claim 1 wherein said vinyl monomer has the formula ##STR2## where R 1 is H or CH 3 Where R 2 is a saturated or unsaturated alkyl group, an aralkyl group, a cycloalkyl group, an haloalkyl group or an aminoalkyl group, each of said groups having at least six carbon atoms.
Claim 4
Dependent Claim
110 words
The composition according to claim 1 wherein said polymer is a copolymer comprising at least 70 weight % of a monomer having the formula ##STR3## Where R 1 is H or CH 3 Where R 2 is a saturated or unsaturated alkyl group, an aralkyl group, a cycloalkyl group, an haloalkyl group or an aminoalkyl group each of said groups having at least six carbon atoms and up to 30 wt % of a monomer selected from the group consisting of monomers of unsaturated carboxylic acids having at least 3 carbon atoms, anhydrides of such acids and α,β-ethylene compounds bearing at least one amide, amino, epoxy ether or hydroxy group.
Claim 5
Dependent Claim
17 words
The composition according to claim 1 wherein said polymer is a hompolymer or copolymer of lauryl acrylate.
Claim 6
Dependent Claim
19 words
The composition according to claim 1 wherein said polyolefin matrix is polyethylene, polypropylene, ethylene propylene copolymer or mixtures thereof.
Claim 7
Dependent Claim
18 words
The composition according to claim 1 wherein said filler is an inorganic filler used in the papermaking art.
Claim 8
Dependent Claim
47 words
The composition according to claim 1 wherein said filler is selected from the group of frangible hydrophyllic mineral oxides, hydroxides, carbonates, sulfates, silicates, silicate and silica minerals and the freshly exposed surfaces are exposed during concurrent size reduction and engrafting of said frangible material with said polymer.
Claim 9
Dependent Claim
46 words
The composition according to claim 7 wherein said filler is selected from the group consisting of titanium oxide, aluminum oxide, ferric oxide, aluminum hydroxide, calcium carbonate, calcium sulfate, barium sulfate, calcium sulfite, calcium silicate, magnesium silicate, talc, mica, cellite, kaolin, asbestos, zeolite, silica and diatomaceous earth.
Claim 10
Dependent Claim
125 words
A process for the preparation of a polyolefin resin composition containing a modified filler comprising mixing a frangible filler with a polymer which is a homopolymer or a copolymer of a vinyl monomer having polar groups and comminuting said filler to a particle size of about 0.5μ to less than 5μ while said filler is mixed with said polymer at a temperature of about 20°-25° C., the initial particle size of said filler being about 5 to 100 times larger than that of the comminuted filler, said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer and then incorporating the thus grafted filler into a polyolefin resin composition.
Claim 11
Dependent Claim
125 words
A process for the preparation of a polyolefin resin composition containing a modified filler comprising mixing a frangible filler with a polymer which is a homopolymer or a copolymer of a vinyl monomer having polar groups and comminuting said filler to a particle size of about 0.5μ to less than 5μ while said filler is mixed with said polymer at a temperature of about 20°-25° C., the initial particle size of said filler being about 5 to 100 times larger than that of the comminuted filler, said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer and then incorporating the thus grafted filler into a polyolefin resin composition.
Claim 12
Dependent Claim
29 words
The process according to claim 9, wherein the amount of said polymer mixed with said filler is about 0.005 to 10 wt.% based upon the weight of filler material.
Claim 13
Dependent Claim
22 words
The process according to claim 9 wherein said modified grafted filler material is incorporated into said polyolefin matrix by a kneading operation.
Claim 14
Dependent Claim
34 words
The process according to claim 9 wherein the particulate filler material having grafted unto freshly exposed surfaces thereof 0.005 to 10 wt % of said filler weight, of the polymer of said vinyl monomer.
Claim 15
Dependent Claim
77 words
The process according to claim 9, in which said polymer is said homopolymer of a copolymer containing at least 70% by weight of said vinyl monomer and in which said vinyl monomer has the formula ##STR4## wherein R 1 is H or CH 3 where R 2 is a saturated or unsaturated alkyl group, an aralkyl group, a cycloalkyl group, an haloalkyl group or an aminoalkyl group, each of said groups having at least six carbon atoms.
Claim 16
Dependent Claim
58 words
The process according to claim 9, in which said polymer is a homopolymer or copolymer of lauryl acrylate and said filler is selected from the group consisting of titanium oxide, aluminum oxide, ferric oxide, aluminum hydroxide, calcium carbonate, calcium sulfate, barium sulfate, calcium sulfite, calcium silicate, magnesium silicate, talc, mica, cellite, kaolin, asbestos, zeolite, silica and diatomaceous earth.
Claim 17
Dependent Claim
122 words
A process for the preparation of a polyolefin resin composition containing a modified filler comprising mixing a frangible filler having an original particle size of about 10μ to about 40μ with a polymer which is a homopolymer or a copolymer of a vinyl monomer bearing polar groups and comminuting said filler to a particle size of about 1/5 to about 1/100 of the original particle size while said filler is mixed with said polymer at a temperature of about 20° to 25° C., said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer and then incorporating the thus grafted filler into a polyolefin resin composition.
Claim 18
Dependent Claim
122 words
A process for the preparation of a polyolefin resin composition containing a modified filler comprising mixing a frangible filler having an original particle size of about 10μ to about 40μ with a polymer which is a homopolymer or a copolymer of a vinyl monomer bearing polar groups and comminuting said filler to a particle size of about 1/5 to about 1/100 of the original particle size while said filler is mixed with said polymer at a temperature of about 20° to 25° C., said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer and then incorporating the thus grafted filler into a polyolefin resin composition.
Claim 19
Dependent Claim
30 words
The process according to claim 15, wherein the amount of said polymer mixed with said filler is about 0.005 to 10 wt % based upon the weight of filler material.
Claim 20
Dependent Claim
77 words
The process according to claim 15, in which said polymer is said homopolymer or a copolymer containing at least 70% by weight of said vinyl monomer and in which said vinyl monomer has the formula ##STR5## wherein R 1 is H or CH 3 where R 2 is a saturated or unsaturated alkyl group, an aralkyl group, a cycloalkyl group, an haloalkyl group or an aminoalkyl group, each of said groups having at least six carbon atoms.
Claim 21
Dependent Claim
58 words
The process according to claim 15, in which said polymer is a homopolymer or copolymer of lauryl acrylate and said filler is selected from the group consisting of titanium oxide, aluminum oxide, ferric oxide, aluminum hydroxide, calcium carbonate, calcium sulfate, barium sulfate, calcium sulfite, calcium silicate, magnesium silicate, talc, mica, cellite, kaolin, asbestos, zeolite, silica and diatomaceous earth.
Claim 22
Dependent Claim
147 words
A polyolefin composition comprising a polyolefin resin matrix having incorporated therein a modified filler comprising a particulate frangible filler material having a polymer which is a homopolymer or copolymer of a vinyl monomer bearing polar groups, directly engrafted onto freshly mechanically-exposed surfaces of said filler material, said modified filler being obtained by mixing a frangible filler having an original particle size of about 10μ to about 40μ with a polymer which is a homopolymer or a copolymer of a vinyl monomer bearing polar groups and comminuting said filler to a particle size of about 1/5 to about 1/100 of the original particle size while said filler is mixed with said polymer at a temperature of about 20° to 25° C., said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer.
Claim 23
Dependent Claim
147 words
A polyolefin composition comprising a polyolefin resin matrix having incorporated therein a modified filler comprising a particulate frangible filler material having a polymer which is a homopolymer or copolymer of a vinyl monomer bearing polar groups, directly engrafted onto freshly mechanically-exposed surfaces of said filler material, said modified filler being obtained by mixing a frangible filler having an original particle size of about 10μ to about 40μ with a polymer which is a homopolymer or a copolymer of a vinyl monomer bearing polar groups and comminuting said filler to a particle size of about 1/5 to about 1/100 of the original particle size while said filler is mixed with said polymer at a temperature of about 20° to 25° C., said comminuting being carried out so as to fracture the original filler particles to form freshly, exposed surfaces thereof and thus graft said filler onto said polymer.
Claim 24
Dependent Claim
78 words
A polyolefin composition according to claim 19, in which said polymer is said homopolymer or a copolymer containing at least 70% by weight of said vinyl monomer and in which said vinyl monomer has the formula ##STR6## wherein R 1 is H or CH 3 wherein R 2 is a saturated or unsaturated alkyl group, an aralkyl group, a cycloalkyl group, an haloalkyl group or an aminoalkyl group, each of said groups having at least six carbon atoms.
Claim 25
Dependent Claim
59 words
A polyolefin composition according to claim 19, in which said polymer is a homopolymer or copolymer of lauryl acrylate and said filler is selected from the group consisting of titanium oxide, aluminum oxide, ferric oxide, aluminum hydroxide, calcium carbonate, calcium sulfate, barium sulfate, calcium sulfite, calcium silicate, magnesium silicate, talc, mica, cellite, kaolin, asbestos, zeolite, silica and diatomaceous earth.
Claim 26
Dependent Claim
20 words
A polyolefin composition according to claim 19, wherein said polyolefin matrix is polyethylene, polypropylene, ethylene propylene copolymer or mixtures thereof.
References Cited (Backward Citations)
US3156666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |