Patent US4600745A successfully refreshed from Google Patents.
US4600745A
Expired / Lapsed
US
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Adhesive compositions
Assignee: Evode Ltd
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Filing: 1985-07-08
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Granted: 1986-07-15
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Expires: 2005-07-08
Abstract
Abstract An adhesive composition for filling gaps and sealing joints in engineering assembly comprises a blend of 100 parts by weight of a liquid polybutadiene polymer having an average molecular weight from 1,000 and a viscosity from 2 to 800 dPas at 25 DEG C., at least 40 percent of the unsaturation having a 1,4 configuration, preferably cis 1,4; 5 to 60 parts of powdered sulphur; 2.5 to 70 parts of an organic accelerator or accelerators; and up to 80 percent by weight of an inert filler or fillers. The adhesive composition may also include promoters, dessicants, blowing agents and/or solid rubber, preferably solid polybutadiene.
Inventors
- 👤 Edward Creighton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:14
CPC Classifications
C; C09; C09J; C09J109/00; C08; C08K; C08K3/00; C08K3/02; C08K3/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
An adhesive composition which is in the form of a paste and which comprises a vulcanizable component, powdered sulfur, an accelerator system and a filler system, at least about 83 percent by weight of the vulcanizable component being a liquid polybutadiene polymer specimen having an average molecular weight in the range of 1,000 to 10,000, a viscosity in the range of 2 to 800 dPas at 25° C. and at least 40 percent of the unsaturation in the 1,4 configuration; said vulcanizable component constituting 100 parts by weight of the composition; said powdered sulfur constituting 5 to 60 parts by weight of the composition; said accelerator system constituting 2.5 to 70 parts by weight of the composition; and said filler system, which comprises at least one inert filler, constituting up to 80 percent by weight of the composition.
Claim 2
Dependent Claim
138 words
An adhesive composition which is in the form of a paste and which comprises a vulcanizable component, powdered sulfur, an accelerator system and a filler system, at least about 83 percent by weight of the vulcanizable component being a liquid polybutadiene polymer specimen having an average molecular weight in the range of 1,000 to 10,000, a viscosity in the range of 2 to 800 dPas at 25° C. and at least 40 percent of the unsaturation in the 1,4 configuration; said vulcanizable component constituting 100 parts by weight of the composition; said powdered sulfur constituting 5 to 60 parts by weight of the composition; said accelerator system constituting 2.5 to 70 parts by weight of the composition; and said filler system, which comprises at least one inert filler, constituting up to 80 percent by weight of the composition.
Claim 3
Dependent Claim
21 words
An adhesive composition as claimed in claim 1 wherein said 40 percent of the unsaturation is in the cis 1,4 configuration.
Claim 4
Dependent Claim
27 words
An adhesive composition as claimed in claim 1 wherein said liquid polybutadiene polymer specimen has at least 70 percent of the unsaturation in the cis 1,4 configuration.
Claim 5
Dependent Claim
27 words
An adhesive composition as claimed in claim 1 wherein said liquid polybutadiene polymer specimen has less than 5 percent of the unsaturation in the vinyl 1,2 configuration.
Claim 6
Dependent Claim
15 words
An adhesive composition as claimed in claim 1, wherein said vulcanizable component includes solid rubber.
Claim 7
Dependent Claim
22 words
An adhesive composition as claimed in claim 5, wherein said solid rubber constitutes about 17 percent by weight of said vulcanizable component.
Claim 8
Dependent Claim
19 words
An adhesive composition as claimed in claim 1, wherein said vulcanizable component consists of said liquid polybutadiene polymer specimen.
Claim 9
Dependent Claim
15 words
An adhesive composition as claimed in claim 5 wherein said solid rubber is solid polybutadiene.
Claim 10
Dependent Claim
25 words
An adhesive composition as claimed in claim 3, wherein said liquid polybutadiene polymer specimen has substantially all of the unsaturation in the cis 1,4 configuration.
References Cited (Backward Citations)
DE931722C
Cited
US2468159A
Cited
FR1395960A
Cited
US3400091A
Cited
US3689450A
Cited
US3770688A
Cited
GB1343588A
Cited
US3897260A
Cited
US3920769A
Cited
US3919133A
Cited
US4064922A
Cited
US4101478A
Cited
US4222906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |