IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0832157
(2001-04-10)
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발명자
/ 주소 |
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출원인 / 주소 |
- The United States of America as represented by the Secretary of the Navy
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
6 |
초록
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The present invention is a propellant used to inflate an airbag in vehicle safety systems comprising from about 70 weight percent to about 82 weight percent Cyclotrimethylenetrinitramine (RDX), from about 10 weight percent to about 15 weight percent of a polymer binder, from about 6 weight percent t
The present invention is a propellant used to inflate an airbag in vehicle safety systems comprising from about 70 weight percent to about 82 weight percent Cyclotrimethylenetrinitramine (RDX), from about 10 weight percent to about 15 weight percent of a polymer binder, from about 6 weight percent to about 9 weight percent of an inert plasticizer, from about 2 weight percent to about 4 weight percent of Hydroxypropyl Cellulose, from about 0.5 weight percent to about 1 weight percent of a polymeric processing aid; and, from about 0.3 weight percent to about 0.5 weight percent of a material that acts as a stabilizer and anti-oxidant. The present invention is designed to have a long shelf life, high resistance to performance degradation after thermal aging testing and excellent physical properties such as excellent strength, insensitivity, and safety.
대표청구항
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1. An improved inflator for an automotive inflatable safety system, comprising: a pressurized medium contained within the inflator housing, the pressurized medium consisting essentially of a predetermined amount of an inert gas and a predetermined amount of oxygen, a gas generator assembly inter
1. An improved inflator for an automotive inflatable safety system, comprising: a pressurized medium contained within the inflator housing, the pressurized medium consisting essentially of a predetermined amount of an inert gas and a predetermined amount of oxygen, a gas generator assembly interconnected with the inflator housing and comprising a gas generator housing and at least one gas generator outlet, a propellant contained within the gas generator housing, and, an inflator activation assembly, wherein the pressurized medium is released from the inflator housing and the propellant is ignited to produce the propellant gases, the improvement, comprising wherein the propellant, comprises: from about 70 weight percent to about 82 weight percent Cyclotrimethylenetrinitramine (RDX), from about 10 weight percent to about 15 weight percent of a polymer binder, from about 6 weight percent to about 9 weight percent of an inert plasticizer, from about 2 weight percent to about 4 weight percent of Hydroxypropyl Cellulose, and, from about 0.5 weight percent to about 1 weight percent of a polymeric processing aid. 2. The inflator of claim 1, further comprising from about 0.3 weight percent to about 0.5 weight percent of a material that acts as a stabilizer and anti-oxidant comprising Ethyl Centralite. 3. The inflator of claim 2, wherein the polymer binder comprises Cellulose Acetate Butyrate. 4. The inflator of claim 3, wherein the inert plasticizer comprises a material selected from Acetyl Triethyl Citrate or Tributyl Citrate. 5. The inflator of claim 4, wherein the inert plasticizer comprises Acetyl Triethyl Citrate. 6. The inflator of claim 5, wherein the propellant comprises approximately 76 weight percent RDX. 7. The inflator of claim 6, wherein the propellant comprises approximately 3 weight percent Hydroxypropyl Cellulose. 8. The inflator of claim 7, wherein the propellant comprises approximately 0.675 weight percent Vestenamer 6213. 9. The inflator of claim 8, wherein the propellant comprises approximately 12.325 weight percent Cellulose Acetate Butyrate. 10. The inflator of claim 9, wherein the propellant comprises approximately 7.6 weight percent Acetyl Triethyl Citrate. 11. The inflator of claim 10, wherein the propellant comprises approximately 0.4 weight percent Ethyl Centralite. 12. A propellant composition, comprising: from about 70 weight percent to about 82 weight percent Cyclotrimethylenetrinitramine (RDX), from about 10 weight percent to about 15 weight percent of a polymer binder, from about 6 weight percent to about 9 weight percent of an inert plasticizer, from about 2 weight percent to about 4 weight percent of Hydroxypropyl Cellulose, from about 0.5 weight percent to about 1 weight percent of a polymeric processing aid; and, from about 0.3 weight percent to about 0.5 weight percent of a material that acts as a stabilizer and anti-oxidant. 13. The propellant composition of claim 12, comprising: approximately 76 weight percent RDX, approximately 12.325 weight percent Cellulose Acetate Butyrate, approximately 3 weight percent Hydroxypropyl Cellulose, approximately 7.6 weight percent Acetyl Triethyl Citrate, approximately 0.675 weight percent of the polymeric processing aid; and, approximately 0.4 weight percent Ethyl Centralite.
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