Low-boron zirconium-free neutral glass having an optimized alkali metal ratio
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-003/091
A61J-001/00
C03C-003/11
C03C-004/20
A61K-009/08
출원번호
US-0224433
(2016-07-29)
등록번호
US-9919950
(2018-03-20)
우선권정보
DE-10 2015 214 431 (2015-07-29)
발명자
/ 주소
Kass, Christof
Tratzky, Stephan
Männl, Reinhard
Eichholz, Rainer
출원인 / 주소
SCHOTT AG
대리인 / 주소
Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
인용정보
피인용 횟수 :
0인용 특허 :
1
초록▼
A zirconium-free neutral glass is provided that finds use in the pharmaceutical sector. The glass has a combination of alkali metal oxides of sodium, potassium and optionally lithium, and a controlled amount of aluminum oxide, which provides a zirconium-free and low-boron neutral glass having good h
A zirconium-free neutral glass is provided that finds use in the pharmaceutical sector. The glass has a combination of alkali metal oxides of sodium, potassium and optionally lithium, and a controlled amount of aluminum oxide, which provides a zirconium-free and low-boron neutral glass having good hydrolytic stability, good acid and alkali stability and good devitrification properties. The glass includes the following components in % by weight: SiO2 72-82,B2O3 3-8,Al2O3 5-8,Na2O2.5-5.5,K2O3.6-8.4,Li2O 0-0.7,MgO 0-0.7,CaO 0-0.4, andTiO2 0-5, whereinLi2O + Na2O + K2O6.8-14.6, andK2O/Na2O ratio0.7-3.4.
대표청구항▼
1. A neutral glass that is free of zirconium and comprises the following components in % by weight: SiO2 72-82,B2O3 3-8,Al2O3 5-8,Na2O2.5-5.5,K2O3.6-8.4,Li2O 0-0.7,MgO 0-0.7,CaO 0-0.4, andTiO2 0-5, whereinLi2O + Na2O + K2O6.8-14.6, andK2O/Na2O ratio0.7-3.4.wherein the neutral glass is free of
1. A neutral glass that is free of zirconium and comprises the following components in % by weight: SiO2 72-82,B2O3 3-8,Al2O3 5-8,Na2O2.5-5.5,K2O3.6-8.4,Li2O 0-0.7,MgO 0-0.7,CaO 0-0.4, andTiO2 0-5, whereinLi2O + Na2O + K2O6.8-14.6, andK2O/Na2O ratio0.7-3.4.wherein the neutral glass is free of zirconium. 2. The neutral glass according to claim 1, wherein the SiO2 has a content in a range from 75% to 81% by weight. 3. The neutral glass according to claim 1, wherein the SiO2 has a content in a range from 77% to 80% by weight. 4. The neutral glass according to claim 1, wherein the B2O3 has a content in a range of 3%-5.5% by weight. 5. The neutral glass according to claim 1, wherein the B2O3 has a content in a range of 3.5%-5.5% by weight. 6. The neutral glass according to claim 1, wherein the Al2O3 has a content in a range from 5% to 7.5% by weight. 7. The neutral glass according to claim 1, wherein the components do not contain any BaO. 8. The neutral glass according to claim 1, wherein the Na2O has a content in a range of 2.8%-4.8% by weight. 9. The neutral glass according to claim 1, wherein the K2O has a content in a range of 4%-8% by weight. 10. The neutral glass according to claim 1, wherein the K2O has a content in a range of 4.2%-7.8% by weight. 11. The neutral glass according to claim 1, comprising 3.5% by weight of Na2O and 6.5% by weight of K2O. 12. The neutral glass according to claim 1, wherein the LiO2 has a content in a range of 0%-0.5% by weight. 13. The neutral glass according to claim 1, further comprising a sum total of Na2O+K2O+Li2O in a range between 6.8% and 13.3% by weight. 14. The neutral glass according to claim 1, further comprising a sum total of Na2O+K2O+Li2O in a range between 7.0% and 12.6% by weight. 15. The neutral glass according to claim 1, wherein the K2O/Na2O ratio is in a range from 0.8 to 2.9. 16. The neutral glass according to claim 1, wherein the K2O/Na2O ratio is in a range from 0.9 to 2.8. 17. The neutral glass according to claim 1, wherein the components do not contain any alkaline earth metal oxide. 18. The neutral glass according to claim 1, wherein the glass is suitable for a use selected from the group consisting of a drawn tube, a vial, a syringe, an ampoule, a carpule, a primary pharmaceutical packaging, and primary pharmaceutical packaging for aqueous or water-containing medicaments. 19. A primary pharmaceutical packaging comprising a neutral glass according to claim 1. 20. The primary packaging according to claim 19 further comprising at least one component selected from the group consisting of water, active ingredient, and buffer solution in the pH range of 1 to 11.
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이 특허에 인용된 특허 (1)
Watzke Eckhart (Jena DEX) Kampfer Andrea (Jena DEX) Kloss Thomas (Jena DEX) Kemmler Gerhard (Jena DEX), Borosilicate glass weak in boric acid.
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