MULTIPLE GLAZED UNIT

• US 3,791,910 A
• Filed: 03/07/1972
• Issued: 02/12/1974
• Est. Priority Date: 03/07/1972
• Status: Expired due to Term

• Current Assignee: George H. Bowser
• Original Assignee: George H. Bowser
• Inventors: Bowser, George H.
• Primary Examiner(s): Van Horn, Charles E.
• Application Number:
  US05/232,411
• Time in Patent Office: 707 Days
• Field of Search: 52/172,309,398-400 156/334,107,109 161/203,193,44,45 260/41A,41B,41R,41.5R,41.5A,888 252/194
• US Class Current: 428/34
• CPC Class Codes: C09K 2200/0239 Oxides, hydroxides, carbonates
• CPC Class Codes: C09K 2200/0243 Silica-rich compounds, e.g. silicates, cement, glass
• CPC Class Codes: C09K 2200/0607 Rubber or rubber derivatives
• CPC Class Codes: C09K 2200/061 Butyl rubber
• CPC Class Codes: E06B 3/677 Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes by means of spacing elements E06B3/663; Cleaning the gap between the panes
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]

Abstract

Disclosed herein is a room temperature vulcanizable mastic for hermetically sealing multiple glazed units. Also disclosed is a dehydrator element for a multiple glazed unit comprising a desiccant material dispersed in a matrix of moisture vapor transmittable material.

Claims

2. A multiple glazed unit according to claim 1 wherein said spacer is comprised of metal.

3. A multiple glazed unit according to claim 1 wherein said spacer is comprised of a desiccant material dispersed in a matrix of moisture vapor transmittable material containing ethylene ethyl acrylate copolymer.

4. A multiple glazed unit comprising a pair of spaced, parallel, glass sheets separated by a marginal edge spacer and a room temperature vulcanizable sealant adhered to said spacer and said glass sheets to hermetically seal the unit, said sealant being substantially solvent-free and consisting essentially of an admixture of Component A and Component B, wherein prior to mixing Component A comprises:

butyl rubber - 18 to 65 percent by weight polyisobutylene - 8 to 60 percent by weight polybutene - 15 to 65 percent by weight carbon black - 0 to 40 percent by weight silica pigment - 3 to 35 percent by weight lead dioxide - 0.8 to 7 percent by weight;

the percentage by weight being based on the total weight of Component A; and

Component B comprises;

butyl rubber - 18 to 65 percent by weight polyisobutylene - 10 to 60 percent by weight polybutene - 15 to 65 percent by weight silica pigment - 3 to 35 percent by weight zinc oxide - 5 to 10 percent by weight paraquinone dioxime - 0.4 to 3.5 percent by weight;

the percentage by weight being based on the total weight of Component B.

5. A multiple glazed unit according to claim 4 wherein said spacer is comprised of metal.

6. A multiple glazed unit according to claim 4 wherein said spacer is comprised of a desiccant material dispersed in a matrix of moisture vapor transmittable material containing ethylene ethyl arcylate copolymer.

7. A multiple glazed unit comprising a pair of spaced, parallel, glass sheets separated by a marginal edge spacer and a room temperature vulcanizable sealant adhered to said spacer and said glass sheets to hermetically seal the unit, said sealant being substantially solvent-free and consisting essentially of:

butyl rubber - 18 to 65 percent by weight polyisobutylene - 8 to 60 percent by weight polybutene - 15 to 65 percent by weight carbon black - 0 to 20 percent by weight silica pigment - 3 to 32 percent by weight lead dioxide - 0.4 to 3.5 percent by weight zinc oxide - 2.5 to 5 percent by weight paraquinone dioxime - 0.2 to 1.6 percent by weight.

8. A multiple glazed unit accordIng to claim 7 wherein said spacer is comprised of metal.

9. A multiple glazed unit according to claim 7 wherein said spacer is comprised of a desiccant material dispersed in a matrix of moisture vapor transmittable material containing ethylene ethyl acrylate copolymer.

10. A mutliple glazed unit according to claim 7 wherein said sealant further comprises from about 0 to 30 percent by weight of zirconium silicate.

11. A multiple glazed unit according to claim 7 wherein said sealant further comprises from about 0.1 to about 5 percent by weight of an organo-silane.

12. The multiple glazed unit according to claim 7 wherein said sealant further comprises from about 1 to about 10 percent by weight of butadiene polymer containing two hydroxy groups per mole.