US4357459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resins based on α-methyl styrene, styrene and a phenol
Assignee: Ingredion Inc
•
Filing: 1980-08-25
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Granted: 1982-11-02
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Expires: 2000-08-25
Abstract
Abstract Resins suitable for adhesives are based on α-methyl styrene, styrene and phenol in certain percentages, viz. 25 to 63, 35 to 73 and 2 to 15 percent by weight, respectively, Combinations of resin, ethylene vinyl acetate copolymer or thermoelastomer and optionally a wax or tackifying oil yield excellent adhesives, in particular hot-melt adhesives.
Inventors
- 👤 Yves Runavot
- 👤 Georges Billault
- 👤 Jacques Salvetat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:36
CPC Classifications
C; C09; C09J; C09J165/00; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/12; C08G; C08G61/00; C08G61/02; C09J125/00; C09J125/02; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2746
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
80 words
A resin having an average molecular weight of 400 to 2,000, which is useful in adhesives, based on a α-methyl styrene, styrene and a phenol as constituents, characterized in that the weight percentages of α-methyl styrene, styrene and a phenol with a structural formula ##STR2## in which R is hydrogen or a C 1 -C 12 alkyl group, which compounds are substantially the sole constituents, range from 25 to 63, from 35 to 73 and from 2 to 15 respectively.
Claim 2
Dependent Claim
80 words
A resin having an average molecular weight of 400 to 2,000, which is useful in adhesives, based on a α-methyl styrene, styrene and a phenol as constituents, characterized in that the weight percentages of α-methyl styrene, styrene and a phenol with a structural formula ##STR2## in which R is hydrogen or a C 1 -C 12 alkyl group, which compounds are substantially the sole constituents, range from 25 to 63, from 35 to 73 and from 2 to 15 respectively.
Claim 3
Dependent Claim
29 words
A resin according to claim 1, in which the weight percentages of the constituents range from 25 to 57, from 40 to 72 and from 3 to 10 respectively.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |