US5124405A
Expired / Lapsed
US
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Method of chemically crosslinking unsaturated polymers
Assignee: Shell USA Inc
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Filing: 1990-07-27
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Granted: 1992-06-23
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Expires: 2010-07-27
Abstract
Abstract This invention is a method of curing unsaturated polymers which do not have a significant amount of functional groups which undergo a cross-linking reaction with amino resins and which preferably comprise at least one conjugated diolefin monomer, said method comprising mixing said polymer with an amino resin in the presence of a proton-donating acid catalyst.
Inventors
- 👤 James R. Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:31
CPC Classifications
C; C08; C08F; C08F220/00; C08L; C08L53/00; C08L53/02; C09; C09J; C09J153/00; C09J153/02; C08L2666/00; C08L2666/02; C08L2666/14
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
64 words
A method of curing unsaturated polymer which have less than about 10 Meg/100 grams of polymer of functional groups which undergo a crosslinking reaction with amino resins and which contain at least one double bond between a tertiary carbon atom and another carbon, said method consisting essentially of mixing such a polymer with an amino resin in the presence of a proton-donating acid catalyst.
Claim 2
Independent Claim
64 words
A method of curing unsaturated polymer which have less than about 10 Meg/100 grams of polymer of functional groups which undergo a crosslinking reaction with amino resins and which contain at least one double bond between a tertiary carbon atom and another carbon, said method consisting essentially of mixing such a polymer with an amino resin in the presence of a proton-donating acid catalyst.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the amino resin contains at least one substituted amino formaldehyde group.
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein the amino resin is selected from the group consisting of glycoluril-formaldehyde resin and urea-formaldehyde resin.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein the amount of amino resin used ranges from about 0.5 to about 40% of the weight of the polymer.
Claim 6
Dependent Claim
16 words
The method of claim 4 wherein the amino resin range is about 1% to about 20%.
Claim 7
Dependent Claim
16 words
The method of claim 5 wherein the amino resin range is about 2% to about 10%.
Claim 8
Dependent Claim
26 words
The method of claim 1 wherein the amount of the acid catalyst used ranges from about 0.1 to about 4% of the weight of the polymer.
Claim 9
Dependent Claim
46 words
The method of claim 7 wherein the acid catalyst is selected from the group consisting of mineral acids, p-toluene sulfonic acid, dinonylnaphthalene disulfonic acid, dodecylbenzene sulfonic acid, oxalic acid, maleic acid, hexamic acid, phosphoric acid, dimethyl acid, pyrophosphate, phthalic acid, acrylic acid and trifluoromethane sulfonic acid.
Claim 10
Dependent Claim
11 words
The method of claim 1 wherein an unsaturated polymer contains isoprene.
Claim 11
Independent Claim
97 words
A method of curing unsaturated block copolymers which have less than about 10 Meg/100 grams of polymer of functional groups which undergo a crosslinking reaction with amino resins and which comprise at least one polymer block A, said block A comprising predominantly monoalkenyl aromatic hydrocarbon monomer units, and at least one polymer block B, said block B comprising predominantly conjugated diolefin monomer units which have a double bond between a tertiary carbon atom and another carbon, said method consisting essentially of mixing the block copolymer with an amino resin in the presence of a proton-donating acid catalyst.
Claim 12
Independent Claim
97 words
A method of curing unsaturated block copolymers which have less than about 10 Meg/100 grams of polymer of functional groups which undergo a crosslinking reaction with amino resins and which comprise at least one polymer block A, said block A comprising predominantly monoalkenyl aromatic hydrocarbon monomer units, and at least one polymer block B, said block B comprising predominantly conjugated diolefin monomer units which have a double bond between a tertiary carbon atom and another carbon, said method consisting essentially of mixing the block copolymer with an amino resin in the presence of a proton-donating acid catalyst.
Claim 13
Dependent Claim
17 words
The method of claim 10 wherein the amino resin contains at least one substituted amino formaldehyde group.
Claim 14
Dependent Claim
21 words
The method of claim 11 wherein the amino resin is selected from the group consisting of glycoluril-formaldehyde resin and urea-formaldehyde resin.
Claim 15
Dependent Claim
25 words
The method of claim 10 wherein the amount of amino resin used ranges from about 0.5 to about 40% of the weight of the polymer.
Claim 16
Dependent Claim
16 words
The method of claim 13 wherein the amino resin range is about 1% to about 20%.
Claim 17
Dependent Claim
16 words
The method of claim 14 wherein the amino resin range is about 2% to about 10%.
Claim 18
Dependent Claim
26 words
The method of claim 10 wherein the amount of the acid catalyst used ranges from about 0.1 to about 4% of the weight of the polymer.
Claim 19
Dependent Claim
46 words
The method of claim 16 wherein the acid catalyst is selected from the group consisting of mineral acids, p-toluene sulfonic acid, dinonylnaphthalene disulfonic acid, dodecylbenzene sulfonic acid, oxalic acid, maleic acid, hexamic acid, phosphoric acid, dimethyl acid, pyrophosphate, phthalic acid, acrylic acid and trifluoromethane sulfonic acid.
Claim 20
Dependent Claim
11 words
The method of claim 10 wherein the conjugated diolefin is isoprene.
Claim 21
Independent Claim
77 words
A method of curing an unsaturated polymer selected from the group consisting of homopolymers and copolymers of conjugated diolefins which have less than about 10 Meg/100 grams of polymer of functional groups which undergo a crosslinking reaction with amino resins wherein at least one diolefin has a double bond between a tertiary carbon atom and another carbon, said method consisting essentially of mixing such a polymer with an amino resin in the presence of a proton-donating catalyst.
Claim 22
Independent Claim
77 words
A method of curing an unsaturated polymer selected from the group consisting of homopolymers and copolymers of conjugated diolefins which have less than about 10 Meg/100 grams of polymer of functional groups which undergo a crosslinking reaction with amino resins wherein at least one diolefin has a double bond between a tertiary carbon atom and another carbon, said method consisting essentially of mixing such a polymer with an amino resin in the presence of a proton-donating catalyst.
Claim 23
Dependent Claim
17 words
The method of claim 19 wherein the amino resin contains at least one substituted amino formaldehyde group.
Claim 24
Dependent Claim
21 words
The method of claim 20 wherein the amino resin is selected from the group consisting of glycoluril-formaldehyde resin and urea-formaldehyde resin.
Claim 25
Dependent Claim
25 words
The method of claim 19 wherein the amount of amino resin used ranges from about 0.5 to about 40% of the weight of the polymer.
Claim 26
Dependent Claim
26 words
The method of claim 19 wherein the amount of the acid catalyst used ranges from about 0.1 to about 4% of the weight of the polymer.
Claim 27
Dependent Claim
16 words
The method of claim 22 wherein the amino resin range is about 1% to about 20%.
Claim 28
Dependent Claim
16 words
The method of claim 24 wherein the amino resin range is about 2% to about 10%.
Claim 29
Dependent Claim
41 words
The method of claim 23 wherein the acid catalyst is selected mineral acids, p-toluene sulfonic acid, dinonylnaphthalene disulfonic acid, dodecylbenzene sulfonic acid, oxalic acid, maleic acid, hexamic acid, phosphoric acid, dimethyl acid, pyrophosphate, phthalic acid, acrylic acid and trifluoromethane sulfonic acid.
Claim 30
Dependent Claim
13 words
The method of claim 19 wherein at least one conjugated diolefin is isoprene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |