US4501826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anion exchange resin having a macroreticular structure
Assignee: Rohm and Haas Co
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Filing: 1980-05-23
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Granted: 1985-02-26
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Expires: 2000-05-23
Abstract
Abstract A process for preparing anion exchange resin having macroreticular structure by suspension copolymerizing a polyvinylidene crosslinking monomer and a monoethylenically unsaturated aliphatic ester of acrylic acid in the presence of a liquid which is substantially immiscible with the aqueous phase of the suspension polymerization medium, which is a solvent for the monomers, and which does not substantially swell the resulting copolymer; the resulting macroreticular copolymer is isolated and aminolyzed to form an anion exchanger.
Inventors
- 👤 Erich F. Meitzner
- 👤 James A. Oline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:54
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/18; B; B01; B01D; B01D15/00; B01D15/08; B01D15/26; B01D15/36; B01D15/361; B01J; B01J20/00; B01J20/22; B01J20/26; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/20; B01J41/00; B01J41/08; B01J41/12; B01J41/14; C08F2/14; C08F36/00; C08F36/02; C08F36/20; C08F8/00; C08F8/30; C08F8/32; C08F8/44; C08J; C08J9/00; C08J9/28; C08J9/286; C08J2357/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
An anion-exchange resin comprising essentially the resinous reaction product of (a) a polymerized mass comprising essentially a cross-linked copolymer of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in nonconjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 10 carbon atoms, said copolymer having micropores common to cross-linked copolymers, said polymerized mass being characterized by a reticular structure of microscopic channels throughout said polymerized mass, the apparent density of said polymerized mass being at least 0.02 density units less than the apparent density of a polymerized mass of the same composition without said reticular structure; and (b) an amino compound containing at least two amino groups, at least one of which is a primary amine group.
Claim 2
Dependent Claim
132 words
An anion-exchange resin comprising essentially the resinous reaction product of (a) a polymerized mass comprising essentially a cross-linked copolymer of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in nonconjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 10 carbon atoms, said copolymer having micropores common to cross-linked copolymers, said polymerized mass being characterized by a reticular structure of microscopic channels throughout said polymerized mass, the apparent density of said polymerized mass being at least 0.02 density units less than the apparent density of a polymerized mass of the same composition without said reticular structure; and (b) an amino compound containing at least two amino groups, at least one of which is a primary amine group.
Claim 3
Dependent Claim
132 words
An anion-exchange resin comprising essentially the resinous reaction product of (a) a polymerized mass comprising essentially a cross-linked copolymer of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in nonconjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 5 carbon atoms, said copolymer having micropores common to cross-linked copolymers, said polymerized mass being characterized by a reticular structure of microscopic channels throughout said polymerized mass, the apparent density of said polymerized mass being at least 0.02 density units less than the apparent density of a polymerized mass of the same composition without said reticular structure, and (b) an amino compound containing at least two amino groups, at least one of which is a primary amine group.
Claim 4
Dependent Claim
132 words
An anion-exchange resin comprising essentially the resinous reaction product of (a) a polymerized mass comprising essentially a cross-linked copolymer of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in nonconjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 5 carbon atoms, said copolymer having micropores common to cross-linked copolymers, said polymerized mass being characterized by a reticular structure of microscopic channels throughout said polymerized mass, the apparent density of said polymerized mass being at least 0.02 density units less than the apparent density of a polymerized mass of the same composition without said reticular structure, and (b) an amino compound containing at least two amino groups, at least one of which is a primary amine group.
Claim 5
Dependent Claim
119 words
A process for the preparation of an anion exchanger which comprises the preparation of a cross-linked copolymer by suspension copolymerizing a monomer mixture of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in a nonconjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 10 carbon atoms, said copolymerization taking place in a liquid which is a solvent for the monomer mixture and which does not swell the copolymer resulting from said copolymerization, the amount of said liquid being sufficient to cause separation of the copolymer from the monomer mixture, isolating said copolymer, and subjecting said copolymer to aminolysis to form an anion exchanger.
Claim 6
Dependent Claim
119 words
A process for the preparation of an anion exchanger which comprises the preparation of a cross-linked copolymer by suspension copolymerizing a monomer mixture of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in a nonconjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 10 carbon atoms, said copolymerization taking place in a liquid which is a solvent for the monomer mixture and which does not swell the copolymer resulting from said copolymerization, the amount of said liquid being sufficient to cause separation of the copolymer from the monomer mixture, isolating said copolymer, and subjecting said copolymer to aminolysis to form an anion exchanger.
Claim 7
Dependent Claim
119 words
A process for the preparation of an anion exchanger which comprises the preparation of a cross-linked copolymer by suspension copolymerizing a monomer mixture of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in a non-conjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 5 carbon atoms, said copolymerization taking place in a liquid which is a solvent for the monomer mixture and which does not swell the copolymer resulting from said copolymerization, the amount of said liquid being sufficient to cause separation of the copolymer from the monomer mixture, isolating said copolymer, and subjecting said copolymer to aminolysis to form an anion exchanger.
Claim 8
Dependent Claim
119 words
A process for the preparation of an anion exchanger which comprises the preparation of a cross-linked copolymer by suspension copolymerizing a monomer mixture of (1) a polyvinylidene monomer containing a plurality of ethylenically unsaturated groups in a non-conjugated relationship and (2) at least one monoethylenically unsaturated aliphatic ester of acrylic acid, said aliphatic ester group containing from 1 to 5 carbon atoms, said copolymerization taking place in a liquid which is a solvent for the monomer mixture and which does not swell the copolymer resulting from said copolymerization, the amount of said liquid being sufficient to cause separation of the copolymer from the monomer mixture, isolating said copolymer, and subjecting said copolymer to aminolysis to form an anion exchanger.
Claim 9
Dependent Claim
32 words
The process of claim 3 wherein the monomer solvent is selected from the group consisting of higher aliphatic hydrocarbons and alkyl esters having a carbon content of at least seven carbon atoms.
Claim 10
Dependent Claim
27 words
The process of claim 5 wherein the monomer solvent comprises between 25% and 50% by weight of the combined weight of the monomers and the monomer solvent.
Claim 11
Dependent Claim
31 words
The process of claim 6 wherein the monomer solvent comprises a member selected from the group consisting of n-hexyl acetate, 2-ethylhexyl acetate, methyl oleate, dibutyl sebacate, dibutyl adipate and dibutyl carbonate.
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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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |