US3907730A
Expired / Lapsed
US
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Resinous initiator suspension for olefinic polymerization reactions
Assignee: Goodrich Corp
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Filing: 1973-09-27
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Granted: 1975-09-23
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Expires: 1993-09-27
Abstract
Abstract A free-radical initiator suspension for use in olefinic polymerization reactions comprising a suspension of said initiator in a water-swellable lightly cross-linked polymer of one or more olefinically-unsaturated carboxylic acid monomers and the process of producing polymers employing said suspension.
Inventors
- 👤 Richard A Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:12
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/18
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
107 words
IN A PROCESS FOR POLYMERIZING ONE OR MORE VINYLIDENE MONOMERS HAVING A TERMINAL CH2=CH< GROUPING WHEREIN SAID MONOMER OR MONOMERS ARE DISPERSED IN AN AQUEOUS POLYMERIZATION REACTION MEDIUM, THE IMPROVEMENT WHICH COMPRISES ADDING A FREERADICAL POLYYMERIZATION INITIATOR TO THE AQUEOUS POLYYMERIZATION REACTION MEDIUM IN THE FORM OF A SUSPENSION OF SAID INITIATOR IN A WATER-INSOLUBLE, WATER-SWELLABLE LIGHTLY CROSS-LINKED POLYMER OF ONE OR MORE OLEFINICALLY UNSATURATED CARBOXYLIC ACID MONOMERS CONTAINING SUFFICIENT WATER TO FORM A FLOWABLE PLASTIC MASS, SID CROSS-LINKED POLYMER BEING PRODUCED BY SOLUTION POLYMERIZING IN AN ORGANIC SOLVENT AT LEAST ONE CRBOXYYLIC ACID MONOMER SELECTED FROM THE GROUP CONSISTING OF (1) THOSE MONOMERS HAVING THE FORMULA
Claim 2
Dependent Claim
107 words
IN A PROCESS FOR POLYMERIZING ONE OR MORE VINYLIDENE MONOMERS HAVING A TERMINAL CH2=CH< GROUPING WHEREIN SAID MONOMER OR MONOMERS ARE DISPERSED IN AN AQUEOUS POLYMERIZATION REACTION MEDIUM, THE IMPROVEMENT WHICH COMPRISES ADDING A FREERADICAL POLYYMERIZATION INITIATOR TO THE AQUEOUS POLYYMERIZATION REACTION MEDIUM IN THE FORM OF A SUSPENSION OF SAID INITIATOR IN A WATER-INSOLUBLE, WATER-SWELLABLE LIGHTLY CROSS-LINKED POLYMER OF ONE OR MORE OLEFINICALLY UNSATURATED CARBOXYLIC ACID MONOMERS CONTAINING SUFFICIENT WATER TO FORM A FLOWABLE PLASTIC MASS, SID CROSS-LINKED POLYMER BEING PRODUCED BY SOLUTION POLYMERIZING IN AN ORGANIC SOLVENT AT LEAST ONE CRBOXYYLIC ACID MONOMER SELECTED FROM THE GROUP CONSISTING OF (1) THOSE MONOMERS HAVING THE FORMULA
Claim 3
Dependent Claim
17 words
A process as defined in claim 1 wherein the carboxylic acid monomer is one having the formula
Claim 4
Dependent Claim
15 words
A process as defined in claim 2 wherein the carboxylic acid monomer is acrylic acid.
Claim 5
Dependent Claim
15 words
A process as defined in claim 1 wherein the freeradical polymerization initiator is di(sec-butyl) peroxydicarbonate.
Claim 6
Dependent Claim
15 words
A process as defined in claim 1 wherein the initiator is acetyl cyclohexane sulfonyl peroxide.
Claim 7
Dependent Claim
22 words
A process as defined in claim 1 wherein the carboxylic acid monomer is acrylic acid and the cross-linking agent is allyl sucrose.
Claim 8
Dependent Claim
22 words
A process as defined in claim 1 wherein the carboxylic acid monomer is acrylic acid and the cross-linking agent is allyl pentaerythritol.
Claim 9
Dependent Claim
12 words
A process as defined in claim 6 wherein the initiator is di(isopropyl)peroxydicarbonate.
Claim 10
Dependent Claim
60 words
A new composition comprising a water-insoluble, water-swellable lightly cross-linked polymer of one or more olefinically unsaturated carboxylic acid monomers containing sufficient water to form a flowable plastic mass and having suspended therein a free-radical polymerization initiator, said cross-linked polymer being formed from at least one carboxylic acid monomer selected from the group consisting of (1) those monomers having the formula
Claim 11
Dependent Claim
60 words
A new composition comprising a water-insoluble, water-swellable lightly cross-linked polymer of one or more olefinically unsaturated carboxylic acid monomers containing sufficient water to form a flowable plastic mass and having suspended therein a free-radical polymerization initiator, said cross-linked polymer being formed from at least one carboxylic acid monomer selected from the group consisting of (1) those monomers having the formula
Claim 12
Dependent Claim
17 words
A composition as defined in claim 9 wherein the carboxylic acid monomer is one having the formula
Claim 13
Dependent Claim
15 words
A composition as defined n claim 10 wherein the carboxylic acid monomer is acrylic acid.
Claim 14
Dependent Claim
14 words
A composition as defined in claim 9 wherein the free-radical polymerization initiator is di(sec-butyl)peroxydicarbonate.
Claim 15
Dependent Claim
15 words
A composition as defined in claim 9 wherein the initiator is acetyl cyclohexane sulfonyl peroxide.
Claim 16
Dependent Claim
22 words
A composition as defined in claim 9 wherein the carboxylic acid monomer is acrylic acid and the cross-linking agent is allyl sucrose.
Claim 17
Dependent Claim
12 words
A composition as defined in claim 14 wherein the initiator is di(isopropyl)peroxydicarbonate.
Claim 18
Dependent Claim
15 words
A process as defined in claim 1 wherein the cross-linking agent is a polyunsaturated polyether.
Claim 19
Dependent Claim
14 words
A process as defined in claim 16 wherein the polyunsaturated polyether is allyl sucrose.
Claim 20
Dependent Claim
15 words
A composition as defined in claim 9 wherein the cross-linking agent is a polyunsaturated polyether.
Claim 21
Dependent Claim
14 words
A composition as defined in claim 18 wherein the polyunsaturated polyether is allyl sucrose.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |