US4415706A
Expired / Lapsed
US
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Compatible blends of polyglutarimides and polyamides
Assignee: Rohm and Haas Co
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Filing: 1982-11-10
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Granted: 1983-11-15
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Expires: 2002-11-10
Abstract
Abstract This invention relates to compatible polymer blends of from about 1 to about 99 percent by weight of an imidized acrylic polymer, containing at least 5 percent by weight glutarimide units, and from about 99 to about 1 percent by weight of a polyamide or mixtures thereof. The compatible polymer blends of polyglutarimides and polyamides possess certain desirable characteristics of each of the polymer components. Compatible polymer blends of polyglutarimides and polyamides improve the melt flow, melt strength, tensile strength, and modulus of polyamides. Compatible polymer blends of polyamides and polyglutarimides possess improved impact resistance and ductility compared with neat polyglutarimides. The addition of a high service temperature polyglutarimide to a lower service temperature nylon results in improved service temperature for the nylon. Compatible polymer blends of polyglutarimide, nylons, and conventional impact modifiers exhibit an improved response to impact modification than does the imide modified with an equal amount of the conventional impact modifier.
Inventors
- 👤 William H. Staas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:43
CPC Classifications
C; C08; C08L; C08L33/00; C08L77/00
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
45 words
A compatible polymer blend comprising from about 1 to about 99 percent by weight of an imidized acrylic polymer, containing at least 5 percent by weight glutarimide units, and from about 99 to about 1 percent by weight of a polyamide or mixtures of polyamides.
Claim 2
Dependent Claim
45 words
A compatible polymer blend comprising from about 1 to about 99 percent by weight of an imidized acrylic polymer, containing at least 5 percent by weight glutarimide units, and from about 99 to about 1 percent by weight of a polyamide or mixtures of polyamides.
Claim 3
Dependent Claim
18 words
The compatible copolymer blend of claim 1 where said imidized acrylic polymer is methyl imide or ammonia imide.
Claim 4
Dependent Claim
21 words
The compatible polymer blend of claim 1 where said polyamide is selected from the group consisting of aliphatic and aromatic nylons.
Claim 5
Dependent Claim
21 words
The compatible polymer blend of claim 3 where the aliphatic nylons are nylon 6, nylon 11, nylon 12, and nylon 66.
Claim 6
Dependent Claim
18 words
The compatible polymer blend of claim 3 where the aromatic nylon is an alkyl-substituted hexamethylene diamine terephthalate polymer.
Claim 7
Dependent Claim
58 words
A compatible polymer blend comprising from about 5 to about 95 percent by weight polyglutarimide and from about 95 to about 5 percent aliphatic or aromatic nylons and mixtures or copolymers thereof, said compatible polymer blend being uniform and possessing improved physical properties compared with the corresponding neat polyglutarimides and neat aliphatic and aromatic nylons and mixtures thereof.
Claim 8
Dependent Claim
58 words
A compatible polymer blend comprising from about 5 to about 95 percent by weight polyglutarimide and from about 95 to about 5 percent aliphatic or aromatic nylons and mixtures or copolymers thereof, said compatible polymer blend being uniform and possessing improved physical properties compared with the corresponding neat polyglutarimides and neat aliphatic and aromatic nylons and mixtures thereof.
Claim 9
Dependent Claim
41 words
The compatible polymer blend of claim 6 where said polyglutarimide is methyl imide or ammonia imide, said aliphatic nylon is nylon 6, nylon 11, nylon 12, and nylon 66, and where said aromatic nylon is an alkyl-substituted hexamethylene diamine terephthalate polymer.
Claim 10
Dependent Claim
48 words
The compatible polymer blend of claim 6 comprising at least 5 percent by weight polyglutarimide, said polyglutarimide being a methyl imide, and up to about 95 percent by weight aliphatic nylon, and said polymer blend having a modulus greater than the modulus of the corresponding neat aliphatic nylon.
Claim 11
Dependent Claim
14 words
The compatible polymer blend of claim 8 where said aliphatic nylon is nylon 6.
Claim 12
Dependent Claim
14 words
The compatible polymer blend of claim 8 where said aliphatic nylon is nylon 11.
Claim 13
Dependent Claim
42 words
The compatible polymer blend of claim 6 where said nylon is an aliphatic nylon and where said blend exhibits a slower melt flow rate and greater melt strength than the melt flow rate and melt strength of the corresponding neat aliphatic nylon.
Claim 14
Dependent Claim
14 words
The compatible polymer blend of claim 11 where said aliphatic nylon is nylon 11.
Claim 15
Dependent Claim
17 words
The compatible polymer blend of claim 11 where said aliphatic nylon is nylon 6 or nylon 66.
Claim 16
Dependent Claim
26 words
The compatible polymer blend of claim 13 where said aliphatic nylon comprises from about 20 to about 80 percent by weight of said compatible polymer blend.
Claim 17
Dependent Claim
51 words
The compatible polymer blend of claim 1 where said nylon is an aliphatic nylon comprising from about 25 to about 80 percent by weight of said compatible polymer blend and where said compatible polymer blend exhibits a higher Vicat softening temperature than the Vicat softening temperature of the corresponding neat polyglutarimide.
Claim 18
Dependent Claim
17 words
The compatible polymer blend of claim 15 where said aliphatic nylon is nylon 6 or nylon 66.
Claim 19
Dependent Claim
56 words
The compatible polymer blend of claim 6 where said nylon is a low service temperature aliphatic nylon selected from the group consisting of nylon 6, nylon 11, and nylon 66, said polyglutarimide having a higher service temperature than said aliphatic nylon, and where said blend exhibits improved service temperature than the corresponding low service temperature nylon.
Claim 20
Dependent Claim
20 words
The compatible polymer blend of claim 6 where said blend exhibits improved ductility as compared to the corresponding neat polyglutarimide.
Claim 21
Dependent Claim
22 words
The compatible polymer blend of claim 6 where said blend exhibits an improved impact resistance as compared to the corresponding neat polyglutarimide.
Claim 22
Dependent Claim
28 words
The compatible polymer blend of claim 18 where said aliphatic or aromatic nylon is an aliphatic nylon selected from the group consisting of nylon 6 and nylon 11.
Claim 23
Dependent Claim
28 words
The compatible polymer blend of claim 19 where said aliphatic or aromatic nylon is an aliphatic nylon selected from the group consisting of nylon 6 and nylon 11.
Claim 24
Dependent Claim
56 words
The compatible polymer blend of claim 6 where said polyglutarimide is a methyl imide having a Vicat service temperature of 140° C. to 150° C. and where said aliphatic or aromatic nylon is nylon 11, said blend comprising from about 5 to about 75 percent by weight of nylon 11 and where said blend is clear.
Claim 25
Dependent Claim
58 words
The compatible polymer blend of claim 6 where said polyglutarimide is a 160° Vicat methyl imide and said aliphatic or aromatic nylon is nylon 11, said blend comprising from about 5 to about 50 percent by weight of nylon 11 and from about 95 to about 50 percent of said methyl imide and where said blend is clear.
Claim 26
Dependent Claim
63 words
The compatible polymer blend of claim 6 where said polyglutarimide is a methyl imide having a Vicat service temperature of 140° C. to 180° C. and where said aliphatic or aromatic nylon is nylon 6 or nylon 11, said blend comprising 5 percent by weight of said nylon and 95 percent by weight of said methyl imide, and where said blend is clear.
Claim 27
Dependent Claim
73 words
The compatible polymer blend of claim 6 where said polyglutarimide is a methyl imide having a Vicat service temperature of 140° C. to 180° C. and where said nylon is nylon 6, said blend comprising from about 25 to about 50 percent by weight nylon 6 and from about 75 to about 50 percent by weight methyl imide, said blend having an optical appearance at least as good as said corresponding neat nylon.
Claim 28
Dependent Claim
73 words
The compatible polymer blend of claim 6 where said polyglutarimide is a 192° Vicat ammonia imide and where said nylon is selected from the group consisting of nylon 6, nylon 11, nylon 66, and an alkyl-substituted hexamethylene diamine terphthalate polymer, said blend comprising 50 percent by weight of said imide and 50 percent by weight of said nylon and where the said blend exhibits improved ductility as compared to the corresponding neat imide.
Claim 29
Dependent Claim
53 words
A compatible polymer blend of an ammonia imide, and aliphatic or aromatic nylon and a two- or three-stage, core/shell, impact modifier polymer in equal weight ratios whereby the compatible blend exhibits an improved response to impact modification than the corresponding imide modified with an equal amount of said all acrylic impact modifier polymer.
Claim 30
Dependent Claim
53 words
A compatible polymer blend of an ammonia imide, and aliphatic or aromatic nylon and a two- or three-stage, core/shell, impact modifier polymer in equal weight ratios whereby the compatible blend exhibits an improved response to impact modification than the corresponding imide modified with an equal amount of said all acrylic impact modifier polymer.
Claim 31
Dependent Claim
22 words
The compatible polymer blend of claim 27 where said two- or three-stage, core/shell, impact modifier polymer is an all acrylic modifier plolymer.
Claim 32
Dependent Claim
17 words
The compatible polymer blend of claim 27 where said aliphatic nylon is nylon 6 or nylon 11.
Claim 33
Dependent Claim
18 words
The compatible polymer blend of claim 27 where said aromatic nylon is an alkyl-substituted hexamethylene diamine therephthalate polymer.
Claim 34
Dependent Claim
39 words
A compatible polymer blend of polyglutarimide and nylon 11 in equal weight ratios where the impact resistance of said blend is free from orientation effects of inclusion polymer domains upon formation of injection molded or compression molded samples therefrom.
Claim 35
Dependent Claim
39 words
A compatible polymer blend of polyglutarimide and nylon 11 in equal weight ratios where the impact resistance of said blend is free from orientation effects of inclusion polymer domains upon formation of injection molded or compression molded samples therefrom.
Claim 36
Dependent Claim
14 words
The compatible polymer blend according to claim 1 wherein an impact modifier is present.
References Cited (Backward Citations)
US4148846A
Cited
US4255322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |