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US 5,492,998 AGranted
Cross-linked tertiary-amine polymers
AssigneesLifesource International, Ltd., Jojani Inc.
InventorNicholas M. Irving
Life of this patent
Estimating the term…
Abstract
Novel polymers of general formula: ##STR1## wherein R is an alkyl or aryl group that contains an active hydrogen atom (as determined by the Zerewitinoff test); A is a spacing group having at least one carbon atom; B is a spacing group having at least two carbon atoms; and R and R' are alkyl or aryl groups. The polymer is synthesized via the Mannich pathway, involving formation of an imine intermediate.
Claims17
A cross-linked polymer of the form:
- ##STR10## wherein R is derived from a compound having a chemical formula HRAH, where each H is an active hydrogen atoms;
- A is a spacing group having at least one carbon atom;
- B is a spacing group having at least two carbon atoms;
- and R is an alkyl group having no more than 20 carbon atoms or an aryl group having no more than three ring members;
- and R' is an alkyl group having no more than 25 carbon atoms or an aryl group having no more than three ring members, said group being derived from a moiety containing a hydroxyl group on the nitrogen-bound carbon atom.
2 more elements
A method of synthesizing a polymer, the method comprising the steps of:
- a. providing a monomer of formula:
- ##STR11## wherein R is an alkyl or aryl group that contains an active hydrogen atom H;
- A is a spacing group having at least one carbon atom;
- B is a spacing group having at least two carbon atoms;
- and R is an alkyl group having no more than 20 carbon atoms or an aryl group having no more than three ring members;
- and R' is an alkyl group having no more than 25 carbon atoms or an aryl group having no more than three ring members, said group being derived from a moiety containing a hydroxyl group on the nitrogen-bound carbon atom;
- b. reacting the monomer to form an imine thereon;
- and
- c. polymerizing the imine-containing monomer to form cross-linked polymers of formula:
- ##STR12##
7 more elements
A method of synthesizing a polymer, the method comprising the steps of:
- a. providing a first monomer of formula:
- ##STR13## wherein R contains an active hydrogen atom H and is an alkyl group having no more than 20 carbon atoms or an aryl group having no more than three ring members;
- A is a spacing group having at least one carbon atom;
- B is a spacing group having at least two carbon atoms;
- b. providing a second monomer of formula:
- ##STR14## wherein B is a spacing group having at least two carbon atoms;
- and R' and R" are each an alkyl group having no more than 25 carbon atoms or an aryl group having no more than three ring members, said group being derived from a moiety containing a hydroxyl group on the nitrogen-bound carbon atom;
- c. reacting the monomers to link the the R" groups of the second monomer to the N atoms of the first monomer;
- and
- d. reacting the monomers to lank the N atoms of the second monomer with the R' groups of the first monomer to form cross-linked polymers of formula:
- ##STR15##
8 more elements
A method of synthesizing a polymer, the method comprising the steps of:
- a. providing a first monomer of formula:
- ##STR16## wherein R is derived from a moiety containing a hydroxyl group on the nitrogen-bound carbon atom and is an alkyl group having no more than 20 carbon atoms or an aryl group having no more than three ring members;
- A is a spacing group having at least one carbon atom;
- B is a spacing group having at least two carbon atoms;
- b. providing a second monomer of formula:
- ##STR17## wherein A is a spacing group having at least one carbon atom;
- B is a spacing group having at least two carbon atoms;
- and R' and R" are each an alkyl group having no more than 25 carbon atoms or an aryl group having no more than three ring members, said group being derived from a moiety containing at least one active hydrogen atom;
- and
- c. reacting the monomers to link the the R" and R' groups of the second monomer to the N atoms of the first monomer to form cross-linked polymers of formula:
- ##STR18##
8 more elements
A method of synthesizing a polymer, the method comprising the steps of:
- a. providing a first monomer of formulas ##STR19## wherein R is derived from a moiety containing a hydroxyl group on the nitrogen-bound carbon atom and is an alkyl group having no more than 20 carbon atoms or an aryl group having no more than three ring members;
- and B is a spacing group having at least two carbon atoms;
- b. providing a second monomer of formula:
- ##STR20## wherein A is a spacing groups having at least one carbon atom;
- B is a spacing group having at least two carbon atoms;
- and R' and R" are each an alkyl group having no more than 25 carbon atoms or an aryl group having no more than three ring members, said group being group derived from a moiety containing at least one active hydrogen atom;
- c. reacting the monomers to link the the R" groups of the second monomer to the N atoms of the first monomer;
- and
- d. reacting the monomers to link the N atoms of the first monomer with the R' groups of the second monomer to form cross-linked polymers of formula:
- ##STR21##
7 more elements
Dependencies are inferred from the claim text.