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US3931074A
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Modifiers for high nitrile polymers
Assignee: Monsanto Co
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Filing: 1974-03-14
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Granted: 1976-01-06
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Expires: 1994-03-14
Abstract
Abstract Disclosed herein are high nitrile polymers which have been compounded with a modifier which is a combination of (1) a C 12 to C 28 saturated aliphatic fatty acid ester of glycerol or sorbitan and (2) a polyoxyethylene sorbitan ester. The amount of modifier used is in the range of from 0.01 to 1.0 percent by weight based on the weight of the nitrile polymer. The compounded polymers exhibit lower melt viscosity and increased melt flow. The modifiers also provide improved clarity, gloss and, in certain instances, articles molded from the compounded nitrile polymer exhibit lower residual monomer levels.
Inventors
- 👤 I. Luis Gomez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; C08L; C08L33/00; C08L33/18; C08L35/00; C08L35/04; C08L7/00; C08L9/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
110 words
A nitrile polymer which has been compounded with a modifier which is a combination of (1) a C 12 to C 28 saturated aliphatic fatty acid ester of a compound selected from the group consisting of glycerol and sorbitan; and (2) a polyoxyethylene sorbitan ester of a C 12 to C 28 saturated fatty acid, wherein the polyoxyethylene contains from 4 to 30 oxyethylene units; wherein the weight ratio of component (1) to component (2) is in the range of from 80/20 to 20/80; and wherein the amount of modifier used is in the range of from 0.01 to 1.0% by weight based on the weight of the nitrile polymer.
Claim 2
Dependent Claim
110 words
A nitrile polymer which has been compounded with a modifier which is a combination of (1) a C 12 to C 28 saturated aliphatic fatty acid ester of a compound selected from the group consisting of glycerol and sorbitan; and (2) a polyoxyethylene sorbitan ester of a C 12 to C 28 saturated fatty acid, wherein the polyoxyethylene contains from 4 to 30 oxyethylene units; wherein the weight ratio of component (1) to component (2) is in the range of from 80/20 to 20/80; and wherein the amount of modifier used is in the range of from 0.01 to 1.0% by weight based on the weight of the nitrile polymer.
Claim 3
Dependent Claim
37 words
A nitrile polymer as in claim 1 which contains 55 to 85% by weight of a nitrile monomer selected from the group consisting of acrylonitrile and methacrylonitrile, wherein the weight of the methacrylonitrile is calculated as acrylonitrile.
Claim 4
Dependent Claim
23 words
A nitrile polymer as in claim 2 wherein the amount of modifier used is in the range from 0.01 to 0.5% by weight.
Claim 5
Dependent Claim
23 words
A nitrile polymer as in claim 2 wherein the amount of modifier used is in the range from 0.01 to 0.1% by weight.
Claim 6
Dependent Claim
26 words
A nitrile polymer as in claim 2 wherein the saturated aliphatic fatty acids used in components (1) and (2) contains from 16 to 20 carbon atoms.
Claim 7
Dependent Claim
22 words
A nitrile polymer as in claim 2 wherein the saturated aliphatic fatty acids used in components (1) and (2) is stearic acid.
Claim 8
Dependent Claim
17 words
A nitrile polymer as in claim 2 wherein the polyoxyethylene segment contains 16 to 24 oxyethylene units.
Claim 9
Dependent Claim
118 words
An acrylonitrile polymer containing from 60 to 83% by weight of acrylonitrile which has been compounded with a modifier which is a combination of (1) a C 16 to C 20 saturated aliphatic fatty acid ester of a compound selected from the group consisting of glycerol and sorbitan; and (2) a polyoxyethylene sorbitan ester of a C 16 to C 20 saturated fatty acid, wherein the polyoxyethylene contains from 16 to 24 oxyethylene units, wherein the weight ratio of component (1) to component (2) is in the range of from 80/20 to 20/80; and wherein the amount of modifier used is in the range from 0.01 to 0.5% by weight based on the weight of the acrylonitrile polymer.
Claim 10
Dependent Claim
118 words
An acrylonitrile polymer containing from 60 to 83% by weight of acrylonitrile which has been compounded with a modifier which is a combination of (1) a C 16 to C 20 saturated aliphatic fatty acid ester of a compound selected from the group consisting of glycerol and sorbitan; and (2) a polyoxyethylene sorbitan ester of a C 16 to C 20 saturated fatty acid, wherein the polyoxyethylene contains from 16 to 24 oxyethylene units, wherein the weight ratio of component (1) to component (2) is in the range of from 80/20 to 20/80; and wherein the amount of modifier used is in the range from 0.01 to 0.5% by weight based on the weight of the acrylonitrile polymer.
Claim 11
Dependent Claim
22 words
An acrylonitrile polymer as in claim 8 wherein the saturated aliphatic fatty acids used in components (1) and (2) is stearic acid.
Claim 12
Dependent Claim
15 words
An acrylonitrile polymer as in claim 8 wherein the polyoxyethylene ester is polyoxyethylene(20) sorbitan tristearate.
Claim 13
Dependent Claim
22 words
An acrylonitrile polymer as in claim 8 wherein the modifier is a combination of (1) glyceryl monostearate and (2) polyoxyethylene(20) sorbitan tristearate.
Claim 14
Dependent Claim
21 words
An acrylonitrile polymer as in claim 8 wherein the modifier is a combination of (1) sorbitan monostearate and polyoxyethylene(20) sorbitan tristearate.
Claim 15
Dependent Claim
87 words
An acrylonitrile polymer containing from 60 to 83% by weight of acrylonitrile which has been compounded with a modifier which is a combination of (1) a compound selected from the group consisting of glyceryl monostearate and sorbitan monostearate; and (2) polyoxyethylene(20) sorbitan tristearate; wherein the weight ratio of component (1) to component (2) is in the range of from 80/20 to 20/80; and wherein the amount of modifier used is in the range from 0.01 to 0.5% by weight based on the weight of the acrylonitrile polymer.
Claim 16
Dependent Claim
87 words
An acrylonitrile polymer containing from 60 to 83% by weight of acrylonitrile which has been compounded with a modifier which is a combination of (1) a compound selected from the group consisting of glyceryl monostearate and sorbitan monostearate; and (2) polyoxyethylene(20) sorbitan tristearate; wherein the weight ratio of component (1) to component (2) is in the range of from 80/20 to 20/80; and wherein the amount of modifier used is in the range from 0.01 to 0.5% by weight based on the weight of the acrylonitrile polymer.
Claim 17
Dependent Claim
23 words
An acrylonitrile polymer as in claim 13 wherein the amount of modifier used is in the range from 0.01 to 0.1% by weight.
Claim 18
Dependent Claim
11 words
An acrylonitrile polymer as in claim 13 which is rubber modified.
Claim 19
Dependent Claim
14 words
A nitrile polymer as in claim 2 wherein styrene is added as a copolymer.
Claim 20
Dependent Claim
11 words
A molded container formed from the nitrile polymer of claim 1.
Claim 21
Dependent Claim
16 words
The molded container of claim 17 wherein the container is in the form of a bottle.
Claim 22
Dependent Claim
11 words
A molded container formed from the nitrile polymer of claim 8.
Claim 23
Dependent Claim
16 words
The molded container of claim 19 wherein the container is in the form of a bottle.
Claim 24
Dependent Claim
11 words
A molded container formed from the nitrile polymer of claim 16.
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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |