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US 12,331,188 B2Granted
Temperature stable polymeric blends for use in non-pneumatic tires
AssigneeBridgestone Americas Tire Operations, LLC
InventorsJared J. Griebel, Hyeonjae Kim
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Abstract
Disclosed herein are polymeric blends suitable for use in non-pneumatic tires, processes for preparing the polymeric blends, and non-pneumatic tires and components thereof incorporating the polymeric blend. The polymeric blends include a thermoplastic polyester elastomer, a high temperature thermoplastic polymer, a compatibilizer resin, a delayed crosslinking agent, and an activator.
Claims20
A temperature stable polymeric blend comprising:
- a. a thermoplastic polyester elastomer having at least one of:
- i. a Tg of about 50 to about 100° C., or
- ii. a melt temperature of about 200 to about 280,
- b. a high temperature thermoplastic polymer having at least one of:
- i. a Tg of about 200 to about 300° C., or
- ii. a melt temperature of about 300 to about 400° C.,
- c. a compatibilizer resin,
- d. a delayed crosslinking agent, and
- e. an activator,
- wherein the total amount of (a) and (b) is 100 parts, (a) is present in an amount of 30-95 parts, and (b) is present in an amount of 5-70 parts.
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A process for preparing a temperature stable polymeric blend comprising
- heating a high temperature thermoplastic polymer to melt the polymer, the high temperature thermoplastic polymer having at least one of:
- a. a Tg of about 200 to about 300° C., or
- b. a melt temperature of about 300 to about 400° C.,
- mixing (i) a thermoplastic polyester elastomer, (ii) a compatibilizer resin, (iii) a delayed crosslinking agent, and (iv) optionally an activator, with the melted polymer to form a blend,
- wherein the thermoplastic polyester elastomer meets at least one of the following:
- c. a Tg of about 50 to about 100° C., or
- d. a melt temperature of about 200 to about 280,
- wherein the heating and mixing occur in an extruder.
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Dependencies are inferred from the claim text.