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US 5,834,582 AGranted
Degradable polymer composition
AssigneeChronopol, Inc.
InventorsRichard G. Sinclair, Edward S. Lipinsky
Life of this patent
Estimating the term…
Abstract
Disclosed are degradable materials which-include a nontoxic hydrolytically degradable polymer and nontoxic modifier, wherein the modifier is compatible with the polymer and the modifier is nonvolatile and nonfugitive. Also disclosed are processes for forming the various degradable materials, which include films, molded products, laminates, foams, powders, nonwovens, adhesives and coatings. The disclosed materials and processes are particularly useful for the production of commercial and consumer products in high volumes which are suitable for recycling after use or which are discarded into the environment in large volumes.
Claims96
A degradable molded article comprising:
- a) a nontoxic hydrolytically degradable polymer, comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR6## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- c) wherein said molded article has a tensile strength of less than about 20,000 psi;
- and
- d) wherein said polymer has a weight average molecular weight from about 100,000 to about 500,000.
4 more elements
A laminated composite material comprising a resin comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR8## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said resin has a tensile strength of less than about 20,000 psi.
3 more elements
A coextrudate material comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR10## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said polymer has a tensile strength of less than about 20,000 psi.
3 more elements
A foam material comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR12## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said foam material has a weight average molecular weight of between about 50,000 and about 500,000.
3 more elements
An adhesive material comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR14## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said adhesive material has a weight average molecular weight of between about 5,000 and about 200,000.
3 more elements
A coating material comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR16## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said coating material has a molecular weight in the range of from about 10,000 to about 100,000.
3 more elements
A spun-bonded nonwoven material comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR18## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said polymer has a tensile strength of less than about 20,000 psi.
3 more elements
A garbage bag comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR20## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said garbage bag has a tensile strength of less than about 20,000 psi.
3 more elements
A flexible bottle comprising:
- a) a nontoxic hydrolytically degradable polymer comprising repeating monomer or comonomer units selected from the group consisting of:
- ##STR21## wherein X is the same or different and is O or NR' with R' being the same or different and being H, hydrocarbyl, or substituted hydrocarbyl;
- R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be the same or different and are hydrogen, hydrocarbyl containing 1 to 24 carbon atoms, or substituted hydrocarbyl containing 1 to 24 carbon atoms, and where n.sub.1 and n.sub.2 can be the same or different and are an integer of from 1-12;
- b) a nontoxic modifier, wherein said modifier is compatible with said polymer and said modifier is nonvolatile and nonfugitive;
- and
- c) wherein said flexible bottle has a tensile strength of less than about 20,000 psi.
3 more elements
Dependencies are inferred from the claim text.