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US 10,724,154 B2Granted
Phosphonate polymers, copolymers, and their respective oligomers as flame retardants for polyester fibers
AssigneeFrx Polymers, Inc.
InventorsMarc-Andre Lebel, Lawino Kagumba, Pin Go
Life of this patent
Estimating the term…
Abstract
The invention relates to the use of polyphosphonates, copoly(phosphonate ester)s, copoly(phosphonate carbonate)s, and their respective oligomers, as flame retardant additives for polyester fibers to impart fire resistance while maintaining or improving processing characteristics for melt spinning fibers.
Claims27
A polymer fiber comprising:
- a thermoplastic polyester selected from the group consisting of poly(butylene terephthalate) (PBT), poly(ethylene terephthalate) (PET), poly(trimethylene terephthalate) (PTT), poly(ethylene naphthalate) (PEN), or combinations thereof;
- and
- about 1 wt. % to about 25 wt. % of at least one phosphonate containing polymer, copolymer, oligomer, or combination thereof, chemically incorporated into the thermoplastic polyester via transesterification,
- wherein the phosphonate containing polymer, copolymer, oligomer, or combination thereof, comprises at least one polyphosphonate, copoly(phosphonate ester), copoly(phosphonate carbonate), oligomeric phosphonate, oligomeric cophosphonate ester, oligomeric cophosphonate carbonates, and combinations thereof.
1 more element
A method for producing a polymer fiber comprising:
- melt blending a thermoplastic polyester selected from the group consisting of poly(butylene terephthalate) (PBT), poly(ethylene terephthalate) (PET), poly(trimethylene terephthalate) (PTT), poly(ethylene naphthalate) (PEN), or combinations thereof;
- and about 1 wt. % to about 25 wt. % of at least one phosphonate containing polymer, copolymer oligomer, or combination thereof, chemically incorporated into the thermoplastic polyester via transesterification to produce a polymer composition;
- and
- fiber spinning the polymer composition to produce the polymer fiber,
- wherein the phosphonate containing polymer, copolymer, oligomer, or combination thereof, comprises at least one polyphosphonate, copoly(phosphonate ester), copoly(phosphonate carbonate), oligomeric phosphonate, oligomeric cophosphonate ester, oligomeric cophosphonate carbonates, and combinations thereof.
2 more elements
An article of manufacture comprising a flame retardant polyester comprising:
- a thermoplastic polyester selected from the group consisting of poly(butylene terephthalate) (PBT), poly(ethylene terephthalate) (PET), poly(trimethylene terephthalate) (PTT), poly(ethylene naphthalate) (PEN), or combinations thereof;
- and
- about 1 wt. % to about 25 wt. % of at least one phosphonate containing polymer, copolymer, oligomer, or combination thereof, chemically incorporated into the thermoplastic polyester via transesterification,
- wherein the phosphonate containing polymer, copolymer, oligomer, or combination thereof, comprises at least one polyphosphonate, copoly(phosphonate ester), copoly(phosphonate carbonate), oligomeric phosphonate, oligomeric cophosphonate ester, oligomeric cophosphonate carbonates, and combinations thereof.
1 more element
A method for producing an article of manufacture comprising:
- melt blending a thermoplastic polyester selected from the group consisting of poly(butylene terephthalate) (PBT), poly(ethylene terephthalate) (PET), poly(trimethylene terephthalate) (PTT), poly(ethylene naphthalate) (PEN), or combinations thereof;
- and about 1 wt. % to about 25 wt. % of at least one phosphonate containing polymer, copolymer, oligomer, or combination thereof, chemically incorporated into the thermoplastic polyester via transesterification to produce a polymer composition;
- and
- fiber spinning the polymer composition to produce polymer fibers,
- wherein the phosphonate containing polymer, copolymer, oligomer, or combination thereof comprises at least one polyphosphonate, copoly(phosphonate ester), copoly(phosphonate carbonate), oligomeric phosphonate, oligomeric cophosphonate ester, oligomeric cophosphonate carbonates, and combinations thereof.
2 more elements
Dependencies are inferred from the claim text.