US4073776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tackifiers for elastomers
Assignee: SI Group Inc
•
Filing: 1975-01-28
•
Granted: 1978-02-14
•
Expires: 1995-01-28
Abstract
Abstract A tackifier system which includes the reaction product of oxirane bearing materials with alkyl phenol novolacs for elastomers of alpha-olefin polymers which are sulfur curable.
Inventors
- 👤 Thomas M. Galkiewicz
- 👤 Kenneth C. Petersen
- 👤 John L. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
C; C08; C08L; C08L21/00; C08L63/00
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
84 words
A tackifier suitable for use with sulfur curable hydrocarbon, halohydrocarbon or hydrocarbon-acrylonitrile elastomers, comprising a resin reaction product AB, wherein A is the residue of an alkyl phenol novolac resin, wherein the alkyl of said alkyl phenol novolac is a hydrocarbon radical of 4 to 16 carbon atoms; and wherein B is a residue of an oxirane bearing material, wherein B comprises 1 to 38 weight percent of AB; wherein AB is substantially a thermoplastic resin, characterized by a WPE of at least 2000.
Claim 2
Dependent Claim
84 words
A tackifier suitable for use with sulfur curable hydrocarbon, halohydrocarbon or hydrocarbon-acrylonitrile elastomers, comprising a resin reaction product AB, wherein A is the residue of an alkyl phenol novolac resin, wherein the alkyl of said alkyl phenol novolac is a hydrocarbon radical of 4 to 16 carbon atoms; and wherein B is a residue of an oxirane bearing material, wherein B comprises 1 to 38 weight percent of AB; wherein AB is substantially a thermoplastic resin, characterized by a WPE of at least 2000.
Claim 3
Dependent Claim
13 words
The tackifier of claim 1 characterized by a WPE of at least 4,000.
Claim 4
Dependent Claim
64 words
The tackifier of claim 1, wherein the phenol novolac resin is formed of the repeating units ##STR5## wherein each of R and R'" is alkyl of 4 to 16 carbon atoms and wherein R' and R" are hydrogen, lower alkyl, aryl or heterocyclic wherein if R' is an alkyl group of more than one carbon atom, aryl or heterocyclic, then R" must be hydrogen.
Claim 5
Dependent Claim
13 words
The tackifier of claim 3, wherein said R' and said R" are hydrogen.
Claim 6
Dependent Claim
14 words
The composition of claim 4, wherein B comprises 5 to 20 percent of AB.
Claim 7
Dependent Claim
14 words
The composition of claim 4, wherein B comprises 8 to 12 percent of AB.
Claim 8
Dependent Claim
17 words
The composition of claim 5, wherein A has a formaldehyde: phenol molar ratio of 0.6 to 1.2.
Claim 9
Dependent Claim
16 words
The composition of claim 4, wherein R is an alkyl of 8 to 12 carbon atoms.
Claim 10
Dependent Claim
14 words
The composition of claim 8, wherein B comprises 5 to 20 percent of AB.
Claim 11
Dependent Claim
14 words
The composition of claim 8, wherein B comprises 8 to 12 percent of AB.
Claim 12
Dependent Claim
15 words
The composition of claim 8, wherein the formaldehyde: phenol molar ratio is 0.6 to 1.2.
Claim 13
Dependent Claim
9 words
The composition of claim 3, wherein R is t-octyl.
Claim 14
Dependent Claim
9 words
The composition of claim 3, wherein R is dodecyl.
Claim 15
Dependent Claim
25 words
The composition of claim 3, wherein said oxirane bearing material is a glycidyl ether, glycidyl ester, aliphatic oxirane, cycloaliphatic oxirane, glycidyl heterocycle or aromatic oxirane.
Claim 16
Dependent Claim
25 words
The composition of claim 14, wherein said oxirane material is a glycidyl ether which is derived from bisphenol A, a phenolic novolak, resorcinol or glycerine.
Claim 17
Dependent Claim
20 words
The composition of claim 14, wherein said oxirane material is a glycidyl ester which is a tetrahydrophthalic diglycidyl ester resin.
Claim 18
Dependent Claim
12 words
The composition of claim 14, wherein said oxirane material is propylene oxide.
Claim 19
Dependent Claim
21 words
The composition of claim 14, wherein said oxirane material is a cycloaliphatic oxirane based on cyclohexene or an alkyl substituted cyclohexene.
Claim 20
Dependent Claim
23 words
The composition of claim 14, wherein said oxirane material is a glycidyl heterocycle which is a di or tri functional hydantoin epoxy resin.
Claim 21
Dependent Claim
12 words
The composition of claim 14, wherein said oxirane material is styrene oxide.
Claim 22
Dependent Claim
20 words
The composition of claim 3, wherein the weight per epoxide equivalent of the oxirane bearing material is 58 to 4000.
Claim 23
Dependent Claim
110 words
A tackifier suitable for use with sulfur curable hydrocarbon, halohydrocarbon or hydrocarbon-acrylonitrile elastomers, consisting essentially of a resin reaction product AB, where A is the residue of an alkyl phenol novolac resin, wherein the alkyl of said alkyl phenol novolac is a hydrocarbon radical of 4 to 16 carbon atoms; and wherein B is a residue of an oxirane bearing material, wherein B comprises 1 to 38 weight percent of AB, and wherein said oxirane bearing material is a glycidyl ether, glycidyl ester, aliphatic oxirane, cycloaliphatic oxirane, glycidyl heterocycle or aromatic oxirane; wherein AB is substantially a thermoplastic resin, characterized by a WPE in the range of 20,000 to 100,000.
Claim 24
Dependent Claim
110 words
A tackifier suitable for use with sulfur curable hydrocarbon, halohydrocarbon or hydrocarbon-acrylonitrile elastomers, consisting essentially of a resin reaction product AB, where A is the residue of an alkyl phenol novolac resin, wherein the alkyl of said alkyl phenol novolac is a hydrocarbon radical of 4 to 16 carbon atoms; and wherein B is a residue of an oxirane bearing material, wherein B comprises 1 to 38 weight percent of AB, and wherein said oxirane bearing material is a glycidyl ether, glycidyl ester, aliphatic oxirane, cycloaliphatic oxirane, glycidyl heterocycle or aromatic oxirane; wherein AB is substantially a thermoplastic resin, characterized by a WPE in the range of 20,000 to 100,000.
Claim 25
Dependent Claim
10 words
The tackifier of claim 22, wherein said alkyl is t-octyl.
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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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |