US4657952A
Expired / Lapsed
US
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Thermoplastic glass fiber-reinforced polyamide molding material
Assignee: Uhde Inventa Fischer AG
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Filing: 1986-02-24
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Granted: 1987-04-14
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Expires: 2006-02-24
Abstract
Abstract Thermoplastic polyamide molding materials containing impact resistance-providing additives, which are reinforced with glass fibers and are colored with dyes and pigments, comprise a mixture of components A and B. Component A comprises glass fiber-containing polyamide and component B comprises polyamide with impact resistance-providing additives and can also contain dyes, pigments, heat and light-stabilizers, as well as processing agents. Due to the separate addition of the glass fibers and the impact resistance-providing additives, pigments, etc. to the polyamide, the conventional reduction in mechanical properties, such as impact resistance and notch toughness, on the addition of all the other components to the polyamide, is surprisingly prevented.
Inventors
- 👤 Franz Kerschbaumer
- 👤 Klaus Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L; C08L77/00; C08J2377/00; C08J2477/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
25 words
A method of making a thermoplastic impact-resistant glass fiber-reinforced polyamide molding material, comprising mixing (A) a glass fiber-containing polyamide and (B) an impact-resistance-providing additive-containing polyamide.
Claim 2
Independent Claim
25 words
A method of making a thermoplastic impact-resistant glass fiber-reinforced polyamide molding material, comprising mixing (A) a glass fiber-containing polyamide and (B) an impact-resistance-providing additive-containing polyamide.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein components A and B contain thermoplastic polyamides selected from the group consisting of polyamides 6, 6/6, 12, 11, 6/9, 6/10, 6/12 and mixtures thereof.
Claim 4
Dependent Claim
64 words
A method according to claim 1, wherein both components A and B contain homo- and copolyamides which are prepared using (1) adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, tridecanedioic acid or terephthalic acid and (2) hexamethylenediamine, tetramethylenediamine, trimethylhexamethylenediamine, bis (4-aminocyclohexyl) methane or 2,2-bis(4'-aminoecyclohexyl) propane, or copolyamides which are obtained by the polycondensation of lactams together with the dicarboxylic acids and diamines given above.
Claim 5
Dependent Claim
20 words
A method according to claim 1, wherein component A comprises 40-90% by weight polyamide and 10-60% by weight glass fibers.
Claim 6
Dependent Claim
22 words
A method according to claim 1, wherein component B comprises 30-95% by weight polyamide and 5-70% by weight of an impact-resistance-providing additive.
Claim 7
Dependent Claim
22 words
A method according to claim 1, wherein the mixing ratio of components A and B is 95:5 to 15:85 parts by weight.
Claim 8
Dependent Claim
18 words
A method according to claim 6, wherein the mixing ratio is from 80:20 to 20:80 parts by weight.
Claim 9
Dependent Claim
24 words
A method according to claim 1, wherein the additive is a maleic anhydride-terminated ethylene-propylene copolymer, an ethylene-butylene copolymer or a styrene-butadiene-acrylic acid ester copolymer.
Claim 10
Independent Claim
42 words
A method of making a thermoplastic impact-resistant glass fiber-reinforced polyamide molding material, which comprises (i) formulating a polyamide containing glass fibers; (ii) separately formulating a polyamide containing an effective amount of an additive which imparts impact-resistance; and (iii) mixing the separate formulations.
Claim 11
Independent Claim
42 words
A method of making a thermoplastic impact-resistant glass fiber-reinforced polyamide molding material, which comprises (i) formulating a polyamide containing glass fibers; (ii) separately formulating a polyamide containing an effective amount of an additive which imparts impact-resistance; and (iii) mixing the separate formulations.
Claim 12
Dependent Claim
30 words
A method according to claim 9, wherein both the formulations contain thermoplastic polyamides selected from the group consisting of polyamides 6, 6/6, 12, 11, 6/9, 6/10, 6/12 and mixtures thereof.
Claim 13
Dependent Claim
62 words
A method according to claim 9, wherein both the formulations contain homo- and copolyamides which are prepared using (1) adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, tridecanedioic acid or terephthalic acid and (2) hexamethylenediamine, tetramethylenediamine, trimethylhexamethylenediamine, bis(4-aminocyclohexyl) methane or 2,2-bis(4'-amino cyclohexyl) propane, or copolyamides which are obtained by the polycondensation of lactams together with the dicarboxylic acids and diamines given above.
Claim 14
Dependent Claim
20 words
A method according to claim 9, wherein formulation (i) comprises 40-90% by weight polyamide and 10-60% by weight glass fibers.
Claim 15
Dependent Claim
22 words
A method according to claim 9, wherein formulation (ii) comprises 30-95% by weight polyamide and 5-70% by weight of an impact-resistance-providing additive.
Claim 16
Dependent Claim
20 words
A method according to claim 9, wherein the mixing ratio of the formulations is 95:5 to 15:85 parts by weight.
Claim 17
Dependent Claim
18 words
A method according to claim 14, wherein the mixing ratio is from 80:20 to 20:80 parts by weight.
Claim 18
Dependent Claim
24 words
A method according to claim 9, wherein the additive is a maleic anhydride-terminated ethylene-propylene copolymer, an ethylene-butylene copolymer or a styrene-butadiene-acrylic acid ester copolymer.
Claim 19
Dependent Claim
13 words
A method according to claim 4 wherein component A comprises heat and light-stabilizers.
Claim 20
Dependent Claim
18 words
A method according to claim 5 wherein component B comprises heat- and light-stabilizers, processing agents, dyes and pigments.
Claim 21
Dependent Claim
13 words
A method according to claim 12 wherein formulation (i) comprises heat- and light-stabilizers.
Claim 22
Dependent Claim
18 words
A method according to claim 13 wherein formulation (ii) comprises heat- and light-stabilizers, processing agents, dyes and pigments.
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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) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |