US4085087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing static electricity in plastic compositions and antistatic compositions
Assignee: Wacker Chemie AG
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Filing: 1975-09-05
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Granted: 1978-04-18
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Expires: 1995-09-05
Abstract
Abstract A method of reducing the electrostatic charge aquired by a plastic composition by incorporating therein an antistatically effective amount of a mixed oxide of phosphorus and one or more metals selected from the group consisting of silicon, aluminum, titanium and iron, said mixed oxide having been prepared by flame hydrolysis; as well as the plastic composition containing said mixed oxide.
Inventors
- 👤 Gunter Kratel
- 👤 Johann Bauer
- 👤 Engelbert Pichler
- 👤 Hans-Peter Kalmuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:27
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/16; C08; C08K; C08K3/00; C08K3/18; C08K3/20; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S524/00; Y10S524/91; Y10S524/912; Y10S524/925
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
87 words
In the method of reducing the electrostatic charge acquired by a plastic composition comprising the step of incorporating an antistatically-effective amount of an antistatic agent in said plastic composition, the improvement consisting essentially of using an antistatically-effective amount of a mixed oxide of phosphorus and one or more metals selected from the group consisting of silicon, aluminum, titanium and iron, said mixed oxide having been prepared by flame hydrolysis and having a BET surface area of from 15 to 400 m 2 /gm, as said antistatic agent.
Claim 2
Dependent Claim
87 words
In the method of reducing the electrostatic charge acquired by a plastic composition comprising the step of incorporating an antistatically-effective amount of an antistatic agent in said plastic composition, the improvement consisting essentially of using an antistatically-effective amount of a mixed oxide of phosphorus and one or more metals selected from the group consisting of silicon, aluminum, titanium and iron, said mixed oxide having been prepared by flame hydrolysis and having a BET surface area of from 15 to 400 m 2 /gm, as said antistatic agent.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein said mixed oxide has a phosphorus content of from 0.1 to 30% by weight.
Claim 4
Dependent Claim
20 words
The process of claim 2 wherein said mixed oxide has a phosphorus content of from 3 to 15% by weight.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein said antistatically-effective amount is from 0.05 to 80% by weight.
Claim 6
Dependent Claim
22 words
The process of claim 1 wherein said plastic composition is pulverulent and said antistatically-effective amount is from 0.05 to 2% by weight.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein said antistatically-effective amount is from 0.1 to 0.3% by weight.
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein said plastic composition is shaped and said antistatically-effective amount is from 1 to 5% by weight.
Claim 9
Dependent Claim
36 words
The process of claim 1 wherein said plastic composition is shaped and said mixed oxide is employed both as a filler and as a antistatic agent in an amount of from 5 to 80% by weight.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein said mixed oxide is a mixed oxide of phosphorus and silicon.
Claim 11
Dependent Claim
17 words
The process of claim 1 wherein said mixed oxide is a mixed oxide of phosphorus and titanium.
Claim 12
Dependent Claim
65 words
A plastic composition comprising a plastic material subject to acquiring an electrostatic charge and intimately mixed therewith an antistatically-effective amount of a mixed oxide of phosphorus and one or more metals selected from the group consisting of silicon, aluminum, titanium and iron, said mixed oxide having been prepared by flame hydrolysis and having a BET surface area of from 15 to 400 m 2 /gm.
Claim 13
Dependent Claim
65 words
A plastic composition comprising a plastic material subject to acquiring an electrostatic charge and intimately mixed therewith an antistatically-effective amount of a mixed oxide of phosphorus and one or more metals selected from the group consisting of silicon, aluminum, titanium and iron, said mixed oxide having been prepared by flame hydrolysis and having a BET surface area of from 15 to 400 m 2 /gm.
Claim 14
Dependent Claim
20 words
The composition of claim 11 wherein said mixed oxide has a phosphorus content of from 0.1 to 30% by weight.
Claim 15
Dependent Claim
20 words
The composition of claim 12 wherein said mixed oxide has a phosphorus content of from 3 to 15% by weight.
Claim 16
Dependent Claim
16 words
The composition of claim 11 wherein said antistatically-effective amount is from 0.05 to 80% by weight.
Claim 17
Dependent Claim
22 words
The composition of claim 11 wherein said plastic material is pulverulent and said antistatically-effective amount is from 0.05 to 2% by weight.
Claim 18
Dependent Claim
16 words
The composition of claim 15 wherein said antistatically-effective amount is from 0.1 to 0.3% by weight.
Claim 19
Dependent Claim
22 words
The composition of claim 11 wherein said plastic material is shaped and said antistatically-effective amount is from 1 to 5% by weight.
Claim 20
Dependent Claim
36 words
The composition of claim 1 wherein said plastic material is shaped and said mixed oxide is employed both as a filler and as an antistatic agent in an amount of from 5 to 80% by weight.
Claim 21
Dependent Claim
17 words
The composition of claim 11 wherein said mixed oxide is a mixed oxide of phosphorus and silicon.
Claim 22
Dependent Claim
17 words
The composition of claim 11 wherein said mixed oxide is a mixed oxide of phosphorus and titanium.
Claim 23
Dependent Claim
26 words
The process of claim 1 wherein said plastic composition is a vinyl chloride polymer selected from the group consisting of polyvinyl chloride and vinyl chloride copolymers.
Claim 24
Dependent Claim
44 words
The process of claim 1 wherein said plastic composition is a polymer selected from the group consisting of vinyl chloride polymers, polyvinyl esters, polyolefin polymers, polyfluorohydrocarbons, aromatic vinyl polymers, polyamides, polyurethanes, polycarbonates, formaldehyde polycondensates, polyester resins, epoxide resins, silicon resins, rubber and mixtures thereof.
Claim 25
Dependent Claim
26 words
The composition of claim 11 wherein said plastic composition is a vinyl chloride polymer selected from the group consisting of polyvinyl chloride and vinyl chloride copolymers.
Claim 26
Dependent Claim
44 words
The process of claim 11 wherein said plastic composition is a polymer selected from the group consisting of vinyl chloride polymers, polyvinyl esters, polyolefin polymers, polyfluorohydrocarbons, aromatic vinyl polymers, polyamides, polyurethanes, polycarbonates, formaldehyde polycondensates, polyester resins, epoxide resins, silicon resins, rubber and mixtures thereof.
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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |