US4181689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin compositions containing modified polypropylene
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1978-10-16
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Granted: 1980-01-01
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Expires: 1998-10-16
Abstract
Abstract A resin composition comprising a modified polypropylene obtained by reacting a polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator, another polyolefin and, if desired, an inorganic and/or an organic filler. The resin composition has excellent coating, adhesion and plating properties.
Inventors
- 👤 Kikuo Nagatoshi
- 👤 Toshimichi Ito
- 👤 Akio Inayoshi
- 👤 Atsunobu Sakoda
- 👤 Noriki Fujimoto
- 👤 Hidehiko Kaji
- 👤 Hirozo Sugahana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
C; C08; C08F; C08F291/00; C08F291/02; C08F255/00; C08F255/02; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/14; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L23/26; C08L2312/00; C08L2555/00; C08L2555/40; C08L51/00; C08L51/06; C08L9/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
33 words
Polyolefin resin composition comprising a polyolefin resin and a modified polypropylene obtained by reacting a polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator.
Claim 2
Dependent Claim
33 words
Polyolefin resin composition comprising a polyolefin resin and a modified polypropylene obtained by reacting a polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator.
Claim 3
Dependent Claim
39 words
Polyolefin resin composition according to claim 1, wherein the amount of polyolefin resin is from about 10 to about 90 percent by weight and the amount of modified polypropylene is from about 90 to about 10 percent by weight.
Claim 4
Dependent Claim
74 words
Polyolefin resin composition according to claim 1, wherein the modified polypropylene is a modified polypropylene produced by reacting 100 parts by weight of a polypropylene with from 1 to 20 parts by weight of a liquid rubber and from 5 to 50 parts by weight of maleic anhydride in from 500 to 1,000 parts by weight of a solvent in the presence of from 0.5 to 10 parts by weight of a radical generator.
Claim 5
Dependent Claim
24 words
Polyolefin resin composition according to claim 1, wherein the modified polypropylene has a maleic anhydride content of from 1 to 10 percent by weight.
Claim 6
Dependent Claim
15 words
Polyolefin resin composition according to claim 1, wherein the polyolefin resin is polyethylene or polypropylene.
Claim 7
Dependent Claim
22 words
Polyolefin resin composition according to claim 1, wherein the liquid rubber has a number average molecular weight of from 500 to 10,000.
Claim 8
Dependent Claim
44 words
Polyolefin resin composition which comprises a polyolefin resin, a modified polypropylene obtained by reacting a polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator and at least one of an inorganic filler and organic filler.
Claim 9
Dependent Claim
44 words
Polyolefin resin composition which comprises a polyolefin resin, a modified polypropylene obtained by reacting a polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator and at least one of an inorganic filler and organic filler.
Claim 10
Dependent Claim
29 words
Polyolefin resin composition according to claim 7, wherein the amount of inorganic filler is from 20 to 60 percent by weight based upon the total weight of the composition.
Claim 11
Dependent Claim
28 words
Polyolefin resin composition according to claim 7, wherein the amount of organic filler from 1 to 50 percent by weight based upon the total weight of the composition.
Claim 12
Dependent Claim
22 words
Polyolefin resin composition according to claim 7, wherein the liquid rubber has a number average molecular weight of from 500 to 10,000.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |