Sealing element and composition

Claim 2

AN ELONGATED STRIP AS A HERMETIC SEALING ELEMENT IN MULTIPLE GLAZE CONSTRUCTION, WHICH ELONGATED STRIP IS A TACKY, MOISTURE AND VAPOR IMPERVIOUS COMPOSITION CONSISTING ESSENTIALLY OF: A. A HEAT-PROCESSED, PARTIALLY CURED LOW-MOLECULAR-WEIGHT BUTYL RUBBER FROM MASTICATING AT BETWEEN 280*F AND 310:F FOR AT LEAST 12 AND UP TO 60 MINUTES TOTAL MASTICATING TIME OF A BLEND OF COMPONENTS, WHICH FOR HEATPROCESSING AND PARTIAL CURING, IN PARTS BY WEIGHT OF CONSISTS ESSENTIALLY OF: A. 100 PARTS OF THE LOW-MOLECULAR-WEIGHT BUTYL RUBBER WHICH IS A COPOLYMER, HAVING A VICOSITY AVERAGE MOLECULAR WEIGHT BETWEEN 10,000 AND 45,000 OF 96 TO 95.5 PARTS OF ISOBUTYLENE AND 4 TO 405 PARTS OF ISOPRENE; B. UP TO 5 PARTS OF ZINC OXIDE; C. UP TO 10 PARTS OF CARBON BLACK; AND D. BETWEEN 2 1/4 AND 9 PARTS OF A NONSULFUR CURE SYSTEM WHICH IS DEVIOD OF SULFUR AND SULFUR-CONTAINING CONSTITUENTS AND WHICH CONTAINS A CONSTITUENT PROVIDING A DINITROSOBENZENE CROSS-LINKING MOIETY WITH

Claim 3

BETWEEN 1.5 AND 8.5 PARTS TOTAL FROM AT LEAST TWO OF FROM 0 TO 2 PARTS OF N-(2-METHYL-2-NITROPROPYL)-4NITROSOANILINE, FROM 0 TO 2.5 TO 5 PARTS OF TETRACHLORO-PBENZOQUINONE, AND FROM 0.25 TO 5 PARTS OF PQUINONEDIOXIME, AND WITH LESS THAN ONE-HALF OF SAID TOTAL CONSISTING OF N-(2-METHYL-2-NITROPROPY)-4NITROSOANILINE, AND WITH AT LEAST 1.5 PARTS OF TETRACHLORO-P-BENZOQUINONE INCLUDED WHEN SAID TOTAL IS 5 AND GREATER, AND II. CONTAINS FROM 0 TO 4 PARTS OF LEAD DIOXIDE WITH INCLUSION OF BETWEEN 3/4 AND 3 3/4 PARTS WHEN THE TETRACHLORO-P-BENZOQUINONE IS LESS THAN 1.5 OR THE TOTAL OF (I) CONSTITUENTS IS LESS THAN 5, AND FROM 0 TO 1/2 PART OF P,P-DIAMINODIPHENYLMETHANE WITH INCLUSION OF BETWEEN 0.1 AND 0.5 PART WHEN THE TETRACHLORO-P-BENZOQUINONE IS 1.5 AND GREATER OR THE TOTAL OF (I) CONSTIUENTS IS 5 AND GREATER.

Claim 4

BETWEEN 1.5 AND 8.5 PARTS TOTAL FROM AT LEAST TWO OF FROM 0 TO 2 PARTS OF N-(2-METHYL-2-NITROPROPYL)-4NITROSOANILINE, FROM 0 TO 2.5 TO 5 PARTS OF TETRACHLORO-PBENZOQUINONE, AND FROM 0.25 TO 5 PARTS OF PQUINONEDIOXIME, AND WITH LESS THAN ONE-HALF OF SAID TOTAL CONSISTING OF N-(2-METHYL-2-NITROPROPY)-4NITROSOANILINE, AND WITH AT LEAST 1.5 PARTS OF TETRACHLORO-P-BENZOQUINONE INCLUDED WHEN SAID TOTAL IS 5 AND GREATER, AND II. CONTAINS FROM 0 TO 4 PARTS OF LEAD DIOXIDE WITH INCLUSION OF BETWEEN 3/4 AND 3 3/4 PARTS WHEN THE TETRACHLORO-P-BENZOQUINONE IS LESS THAN 1.5 OR THE TOTAL OF (I) CONSTITUENTS IS LESS THAN 5, AND FROM 0 TO 1/2 PART OF P,P-DIAMINODIPHENYLMETHANE WITH INCLUSION OF BETWEEN 0.1 AND 0.5 PART WHEN THE TETRACHLORO-P-BENZOQUINONE IS 1.5 AND GREATER OR THE TOTAL OF (I) CONSTIUENTS IS 5 AND GREATER.

Claim 5

The elongated strip of claim 1, which includes during mastication of said blend of components of up to 2 parts per hundred thereof of an antioxidant-antiozonant stabilizer incorporated by mastication therein during the last 15 percent of the total masticating time.

Claim 6

A tacky, moisture and vapor impervious composition in an elongated strip as a hermetic glazing sealing element in multiple glaze unit construction, which composition, in parts by weight, consists essentially of: A. a heat-processed blend of components of a. 100 parts of a low-molecular weight butyl rubber which is a copolymer, having a viscosity average molecular weight between 10,000 and 45,000 of 96 to 95.5 parts of isobutylene and 4 to 4.5 parts of isoprene, b. between 1 and 5 parts of zinc oxide, c. between 1 and 10 parts of carbon black, d. between 2 1/4 and 9 parts total of cure constituents including a constituent providing a dinitrosobenzene moiety with i. between 1.5 and 8.5 parts total from at least two of from 0 to 2 parts of N-(2-methyl-2-nitropropyl)-4-nitrosoaniline, from 0 to 2.5 parts of tetrachloro-p-benzoquinone, and from 0.25 to 5 parts of p-quinonedioxime, and with less than one-half of said total consisting of N-(2-methyl-2-nitropropyl)-4-nitrosoaniline and with at least 1.5 parts of tetrachloro-p-benzoquinone included when said total is 5 and greater, and ii. the remaining parts from 0 to 4 parts of lead dioxide with inclusion of between 3/4 and 3 3/4 parts when the tetrachloro-p-benzoquinone is less than 1.5 or the total of (i) constituents is less than 5, or from 0 to 1/2 parts of p,p-diaminodiphenylmethane with inclusion of between 0.1 and 0.5 part when the tetrachloro-p-benzoquinone is 1.5 and greater or the total of (i) constituents is 5 and greater, and e. up to 2 parts of a sym-dibetanaphthyl-p-phenylene diamine; B. which heat-processed blend included a heat processing in which a (i) cure constituent is blended with a masticated blend of said (a), (b), and (c) components at a temperature between about 260*F and 305*F and the resulting blend then is masticated for at least 12 and up to 60 minutes total masticating time at a temperature between about 280*F and 310*F with the balance of the (i) cure constituents added and blended therewith thereafter and while at least 12 minutes of said total masticating time remains, and with the (ii) cure constituent added and blended therewith thereafter after elapsing of at least 30 percent and before elapsing of 80 percent of said total masticating time and when lead dioxide is the added (ii) cure constituent with it being added and blended at intervals in several incremental portions thereof, each incremental portion being between 10 and 60 percent of the total of said parts thereof being included, and with said (e) component, when included, added and blended therewith during the last remaining 15 percent of said total masticating time.

Claim 7

A tacky, moisture and vapor impervious composition in an elongated strip as a hermetic glazing sealing element in multiple glaze unit construction, which composition, in parts by weight, consists essentially of: A. a heat-processed blend of components of a. 100 parts of a low-molecular weight butyl rubber which is a copolymer, having a viscosity average molecular weight between 10,000 and 45,000 of 96 to 95.5 parts of isobutylene and 4 to 4.5 parts of isoprene, b. between 1 and 5 parts of zinc oxide, c. between 1 and 10 parts of carbon black, d. between 2 1/4 and 9 parts total of cure constituents including a constituent providing a dinitrosobenzene moiety with i. between 1.5 and 8.5 parts total from at least two of from 0 to 2 parts of N-(2-methyl-2-nitropropyl)-4-nitrosoaniline, from 0 to 2.5 parts of tetrachloro-p-benzoquinone, and from 0.25 to 5 parts of p-quinonedioxime, and with less than one-half of said total consisting of N-(2-methyl-2-nitropropyl)-4-nitrosoaniline and with at least 1.5 parts of tetrachloro-p-benzoquinone included when said total is 5 and greater, and ii. the remaining parts from 0 to 4 parts of lead dioxide with inclusion of between 3/4 and 3 3/4 parts when the tetrachloro-p-benzoquinone is less than 1.5 or the total of (i) constituents is less than 5, or from 0 to 1/2 parts of p,p-diaminodiphenylmethane with inclusion of between 0.1 and 0.5 part when the tetrachloro-p-benzoquinone is 1.5 and greater or the total of (i) constituents is 5 and greater, and e. up to 2 parts of a sym-dibetanaphthyl-p-phenylene diamine; B. which heat-processed blend included a heat processing in which a (i) cure constituent is blended with a masticated blend of said (a), (b), and (c) components at a temperature between about 260*F and 305*F and the resulting blend then is masticated for at least 12 and up to 60 minutes total masticating time at a temperature between about 280*F and 310*F with the balance of the (i) cure constituents added and blended therewith thereafter and while at least 12 minutes of said total masticating time remains, and with the (ii) cure constituent added and blended therewith thereafter after elapsing of at least 30 percent and before elapsing of 80 percent of said total masticating time and when lead dioxide is the added (ii) cure constituent with it being added and blended at intervals in several incremental portions thereof, each incremental portion being between 10 and 60 percent of the total of said parts thereof being included, and with said (e) component, when included, added and blended therewith during the last remaining 15 percent of said total masticating time.

Claim 8

The tacky, moisture and vapor impervious composition in an elongated strip as the glazing sealing element of claim 3 in which said composition, in parts by weight, consists essentially of: the heat processed blend of components of a. 84 parts of the low-molecular-weight butyl rubber, b. 3 parts of zinc oxide, c. 8 parts of FEF carbon black, d. cure constituents of i. 0.34 parts of N-(2-methyl-2-nitropropyl)-4-nitrosoaniline, 1.0 part of tetrachloro-p-benzoquinone, and 0.5 part of p-quinonedioxime, ii. 1.25 parts of lead dioxide of about 0.33 micron size, and e. 1.25 parts of sym-dibetanapthyl-p-phenylene diamine.

Claim 9

The tacky, moisture and vapor impervious composition in an elongated strip as the glazing sealing element of claim 3 in which said composition, in parts by weight, consists essentially of: the heat processed blend of components of a. 84 parts of the low-molecular-weight butyl rubber, b. 3 parts of zinc oxide, c. 5.875 parts of FEF carbon black, d. cure constituents of i. 0.5 parts of N-(2-methyl-2-nitropropyl)-4-nitrosoaniline, and 1.25 parts of p-quinonedioxime, ii. 3.125 parts of lead dioxide of about 0.33 micron size, and e. 1.25 parts of sym-dibetanapthyl-p-phenylene diamine.