Biodegradable plastic composition
AssigneeChestnut Natural Capital Limited
InventorIan E. Brown
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Abstract
The present invention relates to a biodegradable plastic composition comprising poly(butylene succinate) (PBS) in an amount between 28 to 90 wt. %; poly(3-hydroxybutyrate-co-valerate) (PHBV) in an amount between 5 to 35 wt. %; and at least one of: a) a biodegradation delay polymer (BDP) in the amount of 10 wt. % or less; and b) a plasticiser in an amount of 13 wt. % or less. The present invention further relates to the use of the biodegradable plastic composition in disposable products, for example, a tree guard, a cable tie and other articles formed from said biodegradable plastic composition
Claims28
A biodegradable plastic composition, comprising:
- poly(butylene succinate) (PBS) in an amount between 28 to 90 wt. %;
- poly(3-hydroxybutyrate-co-valerate) (PHBV) in an amount between 5 to 35 wt. %;
- and
- at least one of:
- a) a biodegradation delay polymer (BDP) in the amount of 10 wt. % or less;
- and
- b) a plasticiser in an amount of 13 wt. % or less.
The biodegradable plastic composition of any preceding claim, further comprising one or more antidegradation agents.
The biodegradable plastic composition of any preceding claim, further comprising a reinforcing filler.
The biodegradable plastic composition of any preceding claim, further comprising an animal repellent
The biodegradable plastic composition of any preceding claim, wherein the biodegradable plastic composition is substantially free of polylactic acid (PLA).
The biodegradable plastic composition of any preceding claim, wherein the biodegradation plastic composition is non-toxic.
A tree guard formed from a biodegradable plastic composition comprising:
- poly(butylene succinate) (PBS) in an amount between 28 to 90 wt. %;
- poly(3-hydroxybutyrate-co-valerate) (PHBV) in an amount between 5 to 35 wt. %;
- and a biodegradation delay polymer (BDP) in the amount of 10 wt. % or less.
A cable tie formed from a biodegradable plastic composition comprising poly(butylene succinate) (PBS) in an amount between 28 to 90 wt. %;
- poly(3-hydroxybutyrate-co-valerate) (PHBV) in an amount between 5 to 35 wt. %;
- and;
- a plasticiser comprising a citric acid ester, glycerol or glycerol triacetate in an amount of 13 wt. % or less.
Dependencies are inferred from the claim text.