公开(公告)号：US3920462A

公开(公告)日：1975-11-18

申请号：US43907774

申请日：1974-02-04

Applicant: CORNING GLASS WORKS

Inventor： FLANNERY JAMES E ,  WEXELL DALE R

IPC: C03C3/083 ,  C03C3/085 ,  C03C3/112 ,  C03C4/00 ,  C03C3/04 ,  C03C3/10

CPC classification number: C03C3/083 ,  C03C3/085 ,  C03C3/112 ,  C03C4/005

Abstract: This invention relates to thermally opacifiable glasses which exhibit uniformly dense opacity, that do not require the presence of lead or lithium, and contain as the primary opacifying phase a crystal selected from the group consisting of sodium molybdate, sodium tungstate, barium molybdate, barium tungstate, and mixtures thereof. The glasses consist essentially, by weight on the oxide basis, of about 64-80% SiO2, 2-12% Al2O3, 9-16% R2O, wherein R2O consists of 9-15% Na2O and 0-5% K2O, 1.2-4% RO3, wherein RO3 consists of 1.2-4% MoO3, or 1.6-4% WO3, or mixtures thereof in amounts equivalent to at least 1.2% MoO3, 0.5-3% F, and, preferably, up to 4% BaO.

Abstract translation: 本发明涉及不透明度均匀的不透明度的热不透光玻璃，其不需要铅或锂的存在，并且含有选自钼酸钠，钨酸钠，钼酸钡，钨酸钡的晶体的主要不透明相 ，及其混合物。 玻璃基本上以氧化物重量计约64-80％SiO 2，2-12％Al 2 O 3，9-16％R 2 O，其中R 20由9-15％Na 2 O和0-5％K 2 O组成， 4％RO 3，其中RO 3由相当于至少1.2％MoO 3，0.5-3％F，优选至多4％BaO的量的1.2-4％MoO 3或1.6-4％WO 3或其混合物组成。

公开(公告)号：US3912524A

公开(公告)日：1975-10-14

申请号：US43907874

申请日：1974-02-04

Applicant: CORNING GLASS WORKS

Inventor： FLANNERY JAMES E ,  WEXELL DALE R

IPC: C03C3/083 ,  C03C3/085 ,  C03C4/00 ,  C03C1/04 ,  C03C3/04 ,  C03C3/10

CPC classification number: C03C3/083 ,  C03C3/085 ,  C03C4/005

Abstract: This invention relates to the production of spontaneous opal glasses which are essentially free from boron and fluorine, that demonstrate uniformly dense opacity, and wherein the predominant opacifying phase is a crystal selected from the group consisting of sodium molybdate, sodium tungstate, barium molybdate, barium tungstate, and mixtures thereof. The glasses consist essentially, by weight on the oxide basis, of about 0.5-5% Li2O, 2-12% Al2O3, 5-16% R2O, wherein R2O consists of Na2O and/or K2O and wherein at least 5% Na2O is present in the absence of BaO, 65-80% SiO2, 1.24% RO3 wherein RO3 consists of 1.2-4% MoO3 or 1.6-4% WO3 or mixtures thereof at least equivalent to 1.2% MoO3, and, preferably, up to 10% BaO.

Abstract translation: 本发明涉及生产基本上不含硼和氟的自发蛋白石玻璃，其表现出均匀致密的不透明度，并且其中主要的不透明相是选自钼酸钠，钨酸钠，钼酸钡，钡 钨酸盐及其混合物。 玻璃基本上以氧化物重量计约0.5-5％Li2O，2-12％Al2O3,5-16％R2O，其中R2O由Na2O和/或K2O组成，其中至少有5％的Na2O存在 在不存在BaO的情况下，65-80％SiO 2，1.2-4％RO 3，其中RO 3由1.2-4％MoO 3或1.6-4％WO 3或其混合物组成，至少相当于1.2％MoO 3，优选至多10 ％宝。