Patent US3894979A successfully refreshed from Google Patents.
US3894979A
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Composition and method for making uniformly dispersed friable compounding ingredients
Assignee: Akron Rubber Development Laboratory Inc
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Filing: 1973-08-17
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Granted: 1975-07-15
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Expires: 1993-08-17
Abstract
Abstract One embodiment of the present invention, a friable composition is formed by hydroxyl terminated polymers which are coupled by diisocyantes in which the equivalent ratio of the isocyanate groups to the hydroxyl groups is from about 0.9 to about 1.2. Catalysts which promote isocyanate coupling are utilized. A compounding ingredient such as curing agents, reinforcers, moisture scavengers, accelerators and the like, is added to the above mixture so that upon coupling, a gelled friable composition is formed. The method relates to a compounding ingredient which is added to a gelling dispersant system comprising a coupling system such as a diisocyanate and a reactive hydroxyl terminated polymer with usually a small amount of catalysts, blending the materials to form a uniform mixture, and producing a gelled mass upon coupling so that a good dispersion of the compounding ingredient is obtained. A friable product is produced in situ.
Inventors
- 👤 Charles R Samples
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/87; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0861; C08G18/0871; C08G18/28; C08G18/67; C08G18/69; C08K; C08K13/00; C08K13/02; C08K3/00; C08K3/01; C08K3/013; C08K5/00; C08K5/0008; C08K5/0016; C08K5/005; C08L; C08L75/00; C08L75/04; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
97 words
A FRIABLE COMPOUNDING COMPOSITION, COMPRISING: A COMPOUNDING AGENT. A GEL DISPERSANT MEDIUM, SAID GEL DISPERSANT MEDIUM CONTAINING LIQUID HYDROXYL TERMINATED POLYMERS SELECTED FROM HE CLASS CONSISTING OF CONJUGATED DIENES, AND POLYESTER, COUPLED BY A DIISOCYANATE COMPOUND HAVING THE FORMULA R(N=CX)2 WHERE R IS AN ALIPHATIC HAVING FROM 2 TO 20 CARBON ATOMS, A CYCLOALIPHATIC HAVING FROM 4 TO 20 CARBON ATOMS, AND AN AROMATIC HAVING FROM 6 TO 20 CARBON TOMS AND X ISAN OXYGEN OR SULFUR, SAID COMPOUNDING AGENT DISPERSED IN SAID GELLED DISPERSANT MEDIUM IN AN AMOUNT SO THAT A FRIABLE COMPOUNDING COMPOSITION IS FORMED.
Claim 2
Dependent Claim
97 words
A FRIABLE COMPOUNDING COMPOSITION, COMPRISING: A COMPOUNDING AGENT. A GEL DISPERSANT MEDIUM, SAID GEL DISPERSANT MEDIUM CONTAINING LIQUID HYDROXYL TERMINATED POLYMERS SELECTED FROM HE CLASS CONSISTING OF CONJUGATED DIENES, AND POLYESTER, COUPLED BY A DIISOCYANATE COMPOUND HAVING THE FORMULA R(N=CX)2 WHERE R IS AN ALIPHATIC HAVING FROM 2 TO 20 CARBON ATOMS, A CYCLOALIPHATIC HAVING FROM 4 TO 20 CARBON ATOMS, AND AN AROMATIC HAVING FROM 6 TO 20 CARBON TOMS AND X ISAN OXYGEN OR SULFUR, SAID COMPOUNDING AGENT DISPERSED IN SAID GELLED DISPERSANT MEDIUM IN AN AMOUNT SO THAT A FRIABLE COMPOUNDING COMPOSITION IS FORMED.
Claim 3
Dependent Claim
29 words
A friable compounding composition according to claim 1, wherein said compounding agent is selected from the class consisting of curing agents, accelerators, stabilizers, antioxidents, antizonates, antistatic agents and plasticizers.
Claim 4
Dependent Claim
36 words
A friable compounding composition according to claim 1, wherein said composition contains a curing agent, said liquid hydroxyl terminated polymers ranging from about 1 to about 22 parts by weight per 100 parts of curing agent.
Claim 5
Dependent Claim
26 words
A friable compounding composition according to claim 3, wherein said liquid hydroxyl terminated polymer range is from about 1 part to about 9 parts by weight.
Claim 6
Dependent Claim
26 words
A friable compounding composition according to claim 3, wherein said curing agent is selected from the class consisting of sulfur, sulfur compounds, litharge, and organic peroxides.
Claim 7
Dependent Claim
17 words
A friable compounding composition according to claim 1, wherein said gelled dispersant medium incapsulates said compounding agent.
Claim 8
Dependent Claim
31 words
A friable compounding composition according to claim 1, wherein said composition contains a catalyst, said catalyst Ranging from 0.1% to about 10% by weight based upon said liquid hydroxyl terminated polymer.
Claim 9
Dependent Claim
26 words
A friable compounding composition according to claim 1, wherein said dispersant medium contains a rubber compounding oil selected from the class of parafinic, aromatic and naphathinic.
Claim 10
Dependent Claim
29 words
A friable compounding composition as in claim 8 wherein the amount of said rubber compounding oil in the dispersant medium ranges from about 25% to about 95% by wt.
Claim 11
Dependent Claim
15 words
A friable compounding composition according to claim 2, wherein said compounding agent is a plasticizer.
Claim 12
Dependent Claim
17 words
A friable compounding composition as in claim 1, wherein the compounding ingredient is a liquid or solid.
Claim 13
Dependent Claim
23 words
A friable compounding composition according to claim 2, wherein said liquid hydroxyl terminated polymer is selected from the class consisting of 1,3 butadiene.
Claim 14
Dependent Claim
39 words
A friable compounding composition according to claim 2, wherein said diisocyanate compound is selected from the group consisting of toluene diisocyanates, 1,4-phenylene diisocyanate, bitoluene diisocyanates, hexamethylene diisocyanate, dianisidine diisocyanates, toluene diisothiocyanates, 1,4-phenylene diisothiocyanate, bitoluene diisothiocyanates, hexamethylene diisothiocyanate, dianisidine diisothiocyanates.
Claim 15
Dependent Claim
23 words
A friable compounding composition according to claim 3, wherein said liquid hydroxyl terminated polymer is selected from the class containing of 1,3 butadiene.
Claim 16
Dependent Claim
38 words
A friable compounding composition according to claim 3, wherein said diisocyanate is selected from the group consisting of toluene diisocyanates, 1,4-phenylene diisocyanate, bitoluene diisocyanates, hexamethylene diisocyanate, dianisidine diisocyanates, toluene diisothiocyanates, 1,4-phenylene diisothiocyanate, bitoluene diisothiocyanates, hexamethylene diisothiocyanate, dianisidine diisothiocyanates.
Claim 17
Dependent Claim
104 words
A friable compounding composition, comprising a compounding agent, a gelled dispersant medium, said gelled dispersant medium containing a curing agent coupling polymers selected from the class consisting of a polybutadiene, nitrile rubbers, styrene-butadiene rubber, neoprene, or a liquid hydroxyl terminated polymer selected from the class consisting of conjugated dienes, and polyester, said curing agent selected from the class consisting of sulfur, sulfur compounds, organic peroxides, and litharge, an amount of said curing agent ranging from 1% to about 20% by weight of said polymer, said compounding agent dispersed in said gelled dispersant medium in an amount so that a friable compounding composition is formed.
Claim 18
Dependent Claim
104 words
A friable compounding composition, comprising a compounding agent, a gelled dispersant medium, said gelled dispersant medium containing a curing agent coupling polymers selected from the class consisting of a polybutadiene, nitrile rubbers, styrene-butadiene rubber, neoprene, or a liquid hydroxyl terminated polymer selected from the class consisting of conjugated dienes, and polyester, said curing agent selected from the class consisting of sulfur, sulfur compounds, organic peroxides, and litharge, an amount of said curing agent ranging from 1% to about 20% by weight of said polymer, said compounding agent dispersed in said gelled dispersant medium in an amount so that a friable compounding composition is formed.
Claim 19
Dependent Claim
26 words
A friable compounding composition according to claim 16, wherein said compounding agent is a rubber compounding oil selected from the class of parafinic, aromatic or naphathinic.
Claim 20
Dependent Claim
30 words
A friable compounding composition according to claim 17, wherein said compounding oil ranges from about 25 parts to about 95 parts by weight of 100 parts of said dispersant medium.
Claim 21
Dependent Claim
15 words
A friable compounding composition according to claim 16, wherein said compounding agent is a plasticizor.
Claim 22
Dependent Claim
17 words
A friable compounding composition as in claim 16 wherein the compounding ingredient is a liquid or solid.
Claim 23
Dependent Claim
38 words
A friable compounding composition according to claim 16, wherein said polymer is selected from the class consisting of 1,3 butadiene, isoprene, and styrene-butadiene and said liquid terminated hydroxyl polymer is selected from the class consisting of 1,3 butadiene.
Claim 24
Dependent Claim
27 words
A friable compounding composition according to claim 16, wherein said compounding agent is selected from the class consisting of accelerators, stabilizers, antioxidants, antiozonates, antistatic agents and plasticizers.
Claim 25
Dependent Claim
20 words
A friable compounding composition according to claim 16, wherein said compounding agent is an excess amount of said curing agent.
Claim 26
Dependent Claim
124 words
A process for making a friable compounding composition in a vessel comprising the steps of: addIng a compounding agent, liquid hydroxyl terminated polymers selected from the class consisting of conjugated dienes, and polyester, adding a diisocyanate compound having the formula R(N C X)2 where R is an aliphatic having from 2 to 20 carbon atoms, a cycloaliphatic having from 4 to 20 carbon atoms, and an aromatic having from 6 to 20 carbon atoms and X is oxygen or sulfur in an amount to couple said liquid terminated polymers, mixing said compounds for a short time so as to achieve a uniformed distribution of said compounding agent, and allowing said mixed components to stand to obtain a gelled friable composition containing said compounding agent.
Claim 27
Dependent Claim
124 words
A process for making a friable compounding composition in a vessel comprising the steps of: addIng a compounding agent, liquid hydroxyl terminated polymers selected from the class consisting of conjugated dienes, and polyester, adding a diisocyanate compound having the formula R(N C X)2 where R is an aliphatic having from 2 to 20 carbon atoms, a cycloaliphatic having from 4 to 20 carbon atoms, and an aromatic having from 6 to 20 carbon atoms and X is oxygen or sulfur in an amount to couple said liquid terminated polymers, mixing said compounds for a short time so as to achieve a uniformed distribution of said compounding agent, and allowing said mixed components to stand to obtain a gelled friable composition containing said compounding agent.
Claim 28
Dependent Claim
27 words
A process for making a friable curing composition as in claim 24, including the additional step of adding a catalyst ranging from 0.5 to 10.0% by weight.
Claim 29
Dependent Claim
22 words
A process for making a friable compounding composition according to claim 24, including the additional step of adding a plasticizer. plasticizers plasticizer
Claim 30
Dependent Claim
31 words
A process for making a friable compounding composition according to claim 24, including the additional step of adding a rubber compounding oil selected from the class of parafinic, aromatic and naphathinic.
Claim 31
Dependent Claim
33 words
A process for making a friable compounding composition according to claim 27, wherein the amount of said rubber compounding oil in said dispersant medium ranges from about 25% to about 95% by weight.
Claim 32
Dependent Claim
26 words
A process for making a friable compounding composition according to claim 24, including the additional step of encapsulating said compounding agent in said gel dispersant medium.
Claim 33
Dependent Claim
27 words
A process for making a friable compounding composition according to claim 24, wherein said liquid hydroxyl terminated polymer is selected from the class consisting of 1,3 butadiene.
Claim 34
Dependent Claim
43 words
A process for making a friable compounding composition according to claim 24, wherein said diisocyanate compound is selected from the group consisting of toluene diisocyanates, 1,4-phenylene diisocyanate, bitoluene diisocyanates, hexamethylene diisocyanate, dianisidine diisocyanates, toluene diisothiocyanates, 1,4-phenylene diisothiocyanate, bitoluene diisothiocyanates, hexamethylene diisothiocyanate, dianisidine diisothiocyanates.
Claim 35
Dependent Claim
42 words
A process for making a friable compounding composition according to claim 24, wherein said compounding agent is a curing agent, said liquid hydroxyl terminated polymers ranging from about 1 to about 22 parts by weight per 100 parts of said curing agent.
Claim 36
Dependent Claim
29 words
A process for making a friable compounding composition according to claim 32, wherein said liquid hydroxyl terminated polymer ranges from about 1 part to about 9 parts by weight.
Claim 37
Dependent Claim
30 words
A process for making a friable compounding composition according to claim 32, wherein said curing agent is selected from the class consisting of sulfur, sulfur compounds, litharge and organic peroxides.
References Cited (Backward Citations)
US3427366A
Cited
US3505383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |