Blends of biodegradable thermoplastic oxyalkanoyl polymer, a naturally occurring biodegradable product, filler and plastic additive
First Claim
1. A blend comprising (i) from about 3 to about 97 weight percent of biodegradable thermoplastic oxyalkanoyl polymer, said polymer having a reduced viscosity value of at least about 0.1 and upwards to about 12 and being further characterized in that at least about 10 weight percent of said thermoplastic oxyalkanoyl polymer is attributable to recurring oxyalkanoyl units of the formula ##EQU15## wherein x is an integer having a value of 2 to 7, with the proviso that x does not equal 3;
- (ii) from less than 97 to about 3 weight percent of naturally occurring biodegradable product; and
(iii) more than 0 to about 75 weight percent of ingredients of the group consisting of plastic additives, fillers, and mixtures thereof, based on the total weight of said blend.
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Accused Products
Abstract
Blends comprising biodegradable thermoplastic oxyalkanoyl polymer, e.g., epsilon-caprolactone polymer, and naturally occurring biodegradable product, e.g., tree bark. These novel blends are useful in the production of shaped articles such as mulch film, transplanter containers, package containers, and the like.
44 Citations
28 Claims
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1. A blend comprising (i) from about 3 to about 97 weight percent of biodegradable thermoplastic oxyalkanoyl polymer, said polymer having a reduced viscosity value of at least about 0.1 and upwards to about 12 and being further characterized in that at least about 10 weight percent of said thermoplastic oxyalkanoyl polymer is attributable to recurring oxyalkanoyl units of the formula ##EQU15## wherein x is an integer having a value of 2 to 7, with the proviso that x does not equal 3;
- (ii) from less than 97 to about 3 weight percent of naturally occurring biodegradable product; and
(iii) more than 0 to about 75 weight percent of ingredients of the group consisting of plastic additives, fillers, and mixtures thereof, based on the total weight of said blend. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- (ii) from less than 97 to about 3 weight percent of naturally occurring biodegradable product; and
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20. A blend comprising (i) from about 3 to about 97 weight percent of biodegradable thermoplastic oxyalkanoyl polymer, said polymer having a reduced viscosity value of at least about 0.1 and upwards to about 12 and being further characterized in that at least about 10 weight percent of said thermoplastic oxyalkanoyl polymer is attributable to recurring oxyalkanoyl units of the formula ##EQU17## wherein x is an integer having a value of 2 to 7, with the proviso that x does not equal 3;
- (ii) from less than 97 to about 3 weight percent of soybean meal; and
, (iii) more than 0 to about 75 weight percent of ingredients of the group consisting of plastic additives, fillers, and mixtures thereof, based on the total weight of said blend. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
- (ii) from less than 97 to about 3 weight percent of soybean meal; and
Specification