Patent US2890076A successfully refreshed from Google Patents.
US4039724A
Expired / Lapsed
US
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Poly(phenol/diene) resin and rubber adhesive compositions tackified therewith
Assignee: 3M Co
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Filing: 1975-08-15
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Granted: 1977-08-02
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Expires: 1995-08-15
Abstract
Abstract Non-conjugated dienes are reacted with phenolic compounds in the presence of a Friedel-Crafts catalyst to produce poly(phenol/diene) copolymer resin having repeating alternate phenol and diene units, a number average molecular weight of 600 - 5000 and a glass transition temperature of 100°- 220° C. The resin, and its partially or fully hydrogenated counterpart, can be blended with various rubbery polymers to provide adhesive compositions having improved adhesive tack.
Inventors
- 👤 Ramsis Gobran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:27
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C09; C09J; C09J109/00; C08L; C08L2666/00; C08L2666/02; C08L2666/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31931; Y10T428/31942; Y10T428/31946
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A tacky adhesive composition comprising (1) 5 to 200 parts by weight poly(phenol/diene) resin having alternately repeating diene and phenol units, a glass transition temperature in the range 100° - 200° C. and a number average molecular weight in the range 600 - 5000 produced by adding, in an inert atmosphere and in the presence of a Friedel-Crafts catalyst, 1 mole of non-conjugated diene with 1 - 1.75 mole of a phenolic compound having at least two ring carbon atoms susceptible of alkylation, at a temperature in the range of 20° - 130° C., maintaining the reactants at a temperature of about 130° C. until the reaction is complete, and isolating the poly(phenol/diene) resin and (2) blended together with said resin about 100 parts by weight rubber selected from the group consisting of polychloroprene, chlorinated ethylene-propylene and poly(ethylene/propylene).
Claim 2
Dependent Claim
138 words
A tacky adhesive composition comprising (1) 5 to 200 parts by weight poly(phenol/diene) resin having alternately repeating diene and phenol units, a glass transition temperature in the range 100° - 200° C. and a number average molecular weight in the range 600 - 5000 produced by adding, in an inert atmosphere and in the presence of a Friedel-Crafts catalyst, 1 mole of non-conjugated diene with 1 - 1.75 mole of a phenolic compound having at least two ring carbon atoms susceptible of alkylation, at a temperature in the range of 20° - 130° C., maintaining the reactants at a temperature of about 130° C. until the reaction is complete, and isolating the poly(phenol/diene) resin and (2) blended together with said resin about 100 parts by weight rubber selected from the group consisting of polychloroprene, chlorinated ethylene-propylene and poly(ethylene/propylene).
Claim 3
Dependent Claim
19 words
An article comprising a flexible self-supporting strip bearing a thin layer of the tacky adhesive composition of claim 1.
Claim 4
Dependent Claim
47 words
A tacky adhesive composition comprising 5 to 200 parts by weight of the poly(phenol/diene) resin of claim 1 wherein at least half but not sustantially all of the olefinic carbon atoms and carbon atoms bearing hydroxyl groups are hydrogenated blended together with about 100 parts polyurethane rubber.
Claim 5
Dependent Claim
44 words
A tacky adhesive composition comprising 5 to 200 parts by weight of the poly(phenol/diene) resin of claim 1 wherein substantially all of the olefinic carbon atoms and carbon atoms bearing hydroxyl groups are hydrogenated blended together with about 100 parts by weight hydrocarbon rubber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |