US4613647A
Expired / Lapsed
US
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Polypropylene compositions containing polyamides reinforced by glass fibers
Assignee: JNC Corp
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Filing: 1985-03-25
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Granted: 1986-09-23
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Expires: 2005-03-25
Abstract
Abstract Polypropylene compositions reinforced by glass fibers having superiority in mechanical properties, rigidity and visual appearance are provided by melting and kneading a mixture of (A) polypropylene resin modified by an unsaturated carboxylic acid or an anhydride thereof or a polypropylene resin containing 5 parts by weight or more of polypropylene resin modified by an unsaturated carboxylic acid or an anhydride thereof, (B) a polyamide resin obtained by the polycondensation of metaxylene diamine and adipic acid and (C) glass fibers, each in specified amount.
Inventors
- 👤 Rikio Yonaiyama
- 👤 Michio Kasai
- 👤 Nobukazu Atsumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:45
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/26; C08L51/00; C08L51/06; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L77/00; C08L77/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
Polypropylene compositions reinforced by glass fibers, obtained by melting and kneading a mixture of (A) 60˜95 parts by weight of a polypropylene resin modified by an unsaturated carboxylic acid or an anhydride thereof or polypropylene resin containig 5 parts by weight or more of polypropylene resin modified by an unsaturated carboxylic acid or an anhydride thereof (B) 50˜5 parts by weight of a polyamide resin obtained by the polycondensation of metaxylene diamine and adipic acid and (C) 5˜100 parts by weight of glass fibers per 100 parts by weight of the total amount of the above-mentioned (A) and (B) constituents.
Claim 2
Dependent Claim
100 words
Polypropylene compositions reinforced by glass fibers, obtained by melting and kneading a mixture of (A) 60˜95 parts by weight of a polypropylene resin modified by an unsaturated carboxylic acid or an anhydride thereof or polypropylene resin containig 5 parts by weight or more of polypropylene resin modified by an unsaturated carboxylic acid or an anhydride thereof (B) 50˜5 parts by weight of a polyamide resin obtained by the polycondensation of metaxylene diamine and adipic acid and (C) 5˜100 parts by weight of glass fibers per 100 parts by weight of the total amount of the above-mentioned (A) and (B) constituents.
Claim 3
Dependent Claim
76 words
Polypropylene compositions reinforced by glass fibers, according to claim 1 in which (A) 70 parts by weight of polypropylene resin modified by an unsaturated carboxylic acid or anhydride thereof (B) 30 parts by weight of polyamide resin obtained by the polycondensation of metaxylene diamine and adipic acid and (C) 50 parts by weight of glass fibers based upon 100 parts by weights of the sum of said (A) and said (B) constituents, are melted and kneaded.
Claim 4
Dependent Claim
76 words
Polypropylene compositions reinforced by glass fibers, according to claim 1 in which (A) 80 parts by weight of polypropylene resin modified by an unsaturated carboxylic acid or anhydride thereof (B) 20 parts by weight of polyamide resin obtained by the polycondensation of metaxylene diamine and adipic acid and (C) 55 parts by weight of glass fibers based upon 100 parts by weights of the sum of said (A) and said (B) constituents, are melted and kneaded.
Claim 5
Dependent Claim
48 words
Polypropylene compositions reinforced by glass fibers according to claim 1 in which said unsaturated carboxylic acid or anhydride thereof is at least one member selected from the group consisting of acrylic acid, metacrylic acid, maleic acid, itaconic acid, fumaric acid, citraconic acid, maleic anhydride, citraconic anhydride, itaconic anhydride.
Claim 6
Dependent Claim
43 words
Polypropylene compositions reinforced by glass fibers according to claim 1 in which said polypropylene resin is at least one member selected from the group consisting of polypropylene homopolymer, a propylene-ethylene block copolymer, a propylene-ethylene random copolymer, a propylene-ethylene-butene copolymer and a propylene-ethylene-hexene copolymer.
Claim 7
Dependent Claim
48 words
Polypropylene compositions reinforced by glass fibers according to claim 2 in which said unsaturated carboxylic acid or anhydride thereof is at least one member selected from the group consisting of acrylic acid, metacrylic acid, maleic acid, itaconic acid, fumaric acid, citraconic acid, maleic anhydride, citraconic anhydride, itaconic anhydride.
Claim 8
Dependent Claim
48 words
Polypropylene compositions reinforced by glass fibers according to claim 3 in which said unsaturated carboxylic acid or anhydride thereof is at least one member selected from the group consisting of acrylic acid, metacrylic acid, maleic acid, itaconic acid, fumaric acid, citraconic acid, maleic anhydride, citraconic anhydride, itaconic anhydride.
Claim 9
Dependent Claim
43 words
Polypropylene compositions reinforced by glass fibers according to claim 2 in which said polypropylene resin is at least one member selected from the group consisting of polypropylene homopolymer, a propylene-ethylene block copolymer, a propylene-ethylene random copolymer, a propylene-ethylene-butene copolymer and a propylene-ethylene-hexene copolymer.
Claim 10
Dependent Claim
43 words
Polypropylene compositions reinforced by glass fibers according to claim 3 in which said polypropylene resin is at least one member selected from the group consisting of polypropylene homopolymer, a propylene-ethylene block copolymer, a propylene-ethylene random copolymer, a propylene-ethylene-butene copolymer and a propylene-ethylene-hexene copolymer.
References Cited (Backward Citations)
GB1345747A
Cited
JPS4948174A
Cited
JPS5144148A
Cited
JPS53120761A
Cited
GB2052528A
Cited
JPS5628241A
Cited
US4500668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |