US4735988A
Expired / Lapsed
US
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Propylene polymer composition
Assignee: Resonac Holdings Corp
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Filing: 1986-05-28
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Granted: 1988-04-05
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Expires: 2006-05-28
Abstract
Abstract A propylene polymer composition comprising (A) a modified propylene polymer obtained by treating: (1) 100 parts by weight of a propylene polymer or a mixture of a propylene homopolymer and a ethylene-propylene copolymer rubber, with (2) 0.1 to 50 parts by weight of an organic compound having at least one unsaturated bond in the molecule and a hydroxyl group and (3) 0.01 to 20 parts by weight of an organic peroxide; and (B) a propylene polymer, wherein content of the component (A) in the composition is 5 to 50% by weight. This composition may further contain one or more of (C) an amorphous ethylene-propylene copolymer having a propylene content of 20% to 50% by weight and a Mooney viscosity ML 1+4 at 100° C. of 20 to 100, (D) a high-density ethylene copolymer having a density of 0.935 g/cm 3 or more, (E) a linear low-density ethylene copolymer having a density of not less than 0.900 g/cm 3 but less than 0.935 g/cm 2 , a melting point of 106° C. to 130 C., a melt flow rate of 0.01 to 100 g/10 min. and substantially having 3 to 35, based on 1,000 carbon atoms of the backbone carbon chain, of the side-chain alkyl groups having 1 to 10 carbon atoms, and (F) an inorganic filler. The resultant composition has not only an excellent adhesion to polyurethane without the use of a primer, but also has a good weathering resistance.
Inventors
- 👤 Tomio Takada
- 👤 Tsutomu Suda
- 👤 Mitsunobu Machida
- 👤 Yozo Nagai
- 👤 Minoru Takaishi
- 👤 Noboru Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:21
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L23/14; C08L23/142; C08L23/16; C08L53/00; C08K; C08K3/00; C08K3/01; C08K3/013; C08L2205/00; C08L2205/02; C08L2205/03; C08L2205/035; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
222 words
A propylene polymer composition comprising: (A) a modified propylene polymer obtained by treating: (1) 100 parts by weight of a propylene homopolymer or a mixture of a propylene homopolymer and an ethyelene-propylene copolymer rubber, said mixture having an ethylene-propylene copolymer rubber content of 40% by weight of less, with (2) 0.1 to 50 parts by weight of an organic compound having at least one unsaturated bond in the molecule and a hydroxyl group and (3) 0.01 to 20 parts by weight of an organic peroxide; (B) an unmodified propylene polymer; (C) an ethylene-propylene copolymer rubber having a propylene content of 20% to 50% by weight and a Mooney viscosity ML 1+4 at 100° C. of 20 to 100, and (F) an inorganic filler; the content of the component (A) being 7% to 40% by weight based on the components (A), (B), (C), and (F), the weight ratio of the component (A) (2) to the components (A), (B), and (C) being 0.01% to 10% by weight, the content of the component (B) based on the components (A), (B), and (C) being at least 15% by weight, the content of the components (A), (B) and (C) being 3% to 35% by weight, and the content of the component (F) based on the components (A), (B), (C), and (F) being 2% to 40% by weight.
Claim 2
Dependent Claim
222 words
A propylene polymer composition comprising: (A) a modified propylene polymer obtained by treating: (1) 100 parts by weight of a propylene homopolymer or a mixture of a propylene homopolymer and an ethyelene-propylene copolymer rubber, said mixture having an ethylene-propylene copolymer rubber content of 40% by weight of less, with (2) 0.1 to 50 parts by weight of an organic compound having at least one unsaturated bond in the molecule and a hydroxyl group and (3) 0.01 to 20 parts by weight of an organic peroxide; (B) an unmodified propylene polymer; (C) an ethylene-propylene copolymer rubber having a propylene content of 20% to 50% by weight and a Mooney viscosity ML 1+4 at 100° C. of 20 to 100, and (F) an inorganic filler; the content of the component (A) being 7% to 40% by weight based on the components (A), (B), (C), and (F), the weight ratio of the component (A) (2) to the components (A), (B), and (C) being 0.01% to 10% by weight, the content of the component (B) based on the components (A), (B), and (C) being at least 15% by weight, the content of the components (A), (B) and (C) being 3% to 35% by weight, and the content of the component (F) based on the components (A), (B), (C), and (F) being 2% to 40% by weight.
Claim 3
Dependent Claim
51 words
A propylene polymer composition as claimed in claim 1, wherein said unmodified propylene polymer is a propylene homopolymer, a propylene block copolymer composed of propylene as a major component with ethylene and/or an α-olefin, or a propylene random copolymer composed of propylene as a major component with ethylene and/or an α-olefin.
Claim 4
Dependent Claim
84 words
A propylene polymer composition as claimed in claim 1 further comprising (D) a high-density ethylene polymer having a density of 0.935 g/cm 3 or more and a melt flow rate of 0.1 to 100 g/min, the content of the component (D) in the composition being 3% to 25% by weight, the weight ratio of the component (B) in the composition being at least 15% weight, and the weight ratio of the component (A) (2) to the total composition being 0.01% to 10% by weight.
Claim 5
Dependent Claim
97 words
A propylene polymer composition as claimed in claim 3, wherein said composition further comprises (E) 3% to 25% by weight, based on the weight of the composition, of a linear low-density ethylene copolymer having a density of not less than 0.900 g/cm 3 but less than 0.935 g/cm 3 , a melting point of 106° C. to 130° C., and a melt flow rate of 0.1 to 100 g/10 min. and substantially having 3 to 35, based on 1,000 carbon atoms of the backbone carbon chain, of the side-chain alkyl groups having 1 to 10 carbon atoms.
Claim 6
Dependent Claim
131 words
A propylene polymer composition as claimed in claim 1 further comprising (E) a linear low-density ethylene copolymer having a density of not less than 0.90 g/cm 3 but less than 0.935 g/cm 3 , a melting point of 106° C. to 130° C., and a melt flow rate of 0.1 to 100 g/10 min. and substantially having 3 to 35, based on 1,000 carbon atoms of the backbone carbon chain, of the side-chain alkyl groups having 1 to 10 carbon atoms, the content of the component (E) in the composition being 3% to 25% by weight, the weight ratio of the component (B) in the composition being at least 15% by weight, and the weight ratio of the component (A) (2) to the total composition being 0.01% to 10% by weight.
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JPS5926258A
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JPS59204642A
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JPS6049046A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |