Polymeric sorbents for reactive gases
Assignee3M Innovative Properties Company
InventorsMichael S. Wendland, Michael W. Kobe
Life of this patent
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Abstract
Polymeric sorbents for reactive gases are provided. More particularly, the polymeric sorbents are a reaction product of a divinylbenzene/maleic anhydride precursor polymeric material with a nitrogen-containing compound. The polymeric sorbent has nitrogen-containing groups that are covalently attached to the polymeric sorbent. The nitrogen-containing groups include a primary amino group, a secondary amino group, a tertiary amino group, or a combination thereof. Additionally, methods of sorbing reactive gases on the polymeric sorbents and compositions resulting from the sorption of reactive gases on the polymeric sorbents are provided.
Claims15
A polymeric sorbent comprising a reaction product of:
- (a) a precursor polymeric material comprising a polymerized product of a polymerizable composition comprising
- (1) 8 to 65 weight percent maleic anhydride based on the total weight of monomers in the polymerizable composition;
- (2) 30 to 85 weight percent divinylbenzene based on the total weight of monomers in the polymerizable composition;
- and
- (3) 0 to 20 weight percent of a styrene-type monomer based on the total weight of monomers in the polymerizable composition, wherein the styrene-type monomer is styrene, an alkyl-substituted styrene, or a combination thereof;
- and
- (b) a nitrogen-containing compound that is selected from ammonia or a compound having at least one primary amino group or at least one secondary amino group, wherein the polymeric sorbent has covalently attached nitrogen-containing groups.
A method of sorbing a reactive gas on a polymeric sorbent, the method comprising:
- a) providing a polymeric sorbent, the polymeric sorbent being a reaction product of reaction mixture comprising
- 1) a precursor polymeric material comprising a polymerized product of a polymerizable composition comprising
- (a) 8 to 65 weight percent maleic anhydride based on the total weight of monomers in the polymerizable composition;
- (b) 30 to 85 weight percent divinylbenzene based on the total weight of monomers in the polymerizable composition;
- and
- (c) 0 to 20 weight percent of a styrene-type monomer based on the total weight of monomers in the polymerizable composition, wherein the styrene-type monomer is styrene, an alkyl-substituted styrene, or a combination thereof;
- and
- 2) a nitrogen-containing compound that is selected from ammonia or a compound having at least one primary or secondary amino group, wherein the polymeric sorbent has covalently attached nitrogen-containing groups;
- and
- b) sorbing the reactive gas on the polymeric sorbent, wherein the reactive gas is an acid gas, an acid precursor gas, or both.
A method of forming a polymeric sorbent, the method comprising:
- (a) providing a precursor polymeric material comprising a polymerized product of a polymerizable composition comprising
- (1) 8 to 65 weight percent maleic anhydride based on the total weight of monomers in the polymerizable composition;
- (2) 30 to 85 weight percent divinylbenzene based on the total weight of monomers in the polymerizable composition;
- and
- (3) 0 to 20 weight percent of a styrene-type monomer based on the total weight of monomers in the polymerizable composition, wherein the styrene-type monomer is styrene, an alkyl-substituted styrene, or a combination thereof;
- and
- (b) reacting the precursor polymeric material with a nitrogen-containing compound that is selected from ammonia or a compound having at least one primary amino group or at least one secondary amino group, wherein the polymeric sorbent has covalently attached nitrogen-containing groups.
Dependencies are inferred from the claim text.