Back to results
US 11,535,743 B2Granted
Thermoplastic compounds bondable to rigid substrates
AssigneeAvient Corporation
InventorsHaiping Zhang, Dirk Von Falkenhayn
Life of this patent
Estimating the term…
Abstract
Thermoplastic compounds include elastomer, modified polyolefin polymer including a polar functional group, and unmodified polyolefin polymer. The melt flow rate of the modified polyolefin polymer is greater than the melt flow rate of the unmodified polyolefin polymer. The thermoplastic compounds exhibit excellent bonding when overmolded onto rigid substrates such as metals, while also providing desirable aesthetic properties and good processability.
Claims19
A thermoplastic compound comprising:
- (a) from about 1 to about 30 weight percent, by weight of the thermoplastic compound, of an elastomer;
- (b) from about 10 to about 50 weight percent, by weight of the thermoplastic compound, of a modified polyolefin polymer comprising a polar functional group;
- and
- (c) from about 10 to about 90 weight percent, by weight of the thermoplastic compound, of an unmodified polyolefin polymer;
- wherein the unmodified polyolefin polymer is selected from polypropylene homopolymer, polypropylene copolymer, and combinations thereof;
- wherein the modified polyolefin polymer includes one type or multiple types of modified polyolefin polymer and the unmodified polyolefin polymer includes one type or multiple types of unmodified polyolefin polymer;
- and
- wherein each type of the modified polyolefin polymer and each type of the unmodified polyolefin polymer has a Melt Flow Rate;
- wherein the one type of modified polyolefin polymer or a combination of the multiple types of modified polyolefin polymer has a Melt Flow Rate (190° C., 2.16 kg) of at least about 100 g/10 min;
- and
- wherein the Melt Flow Rate for the one type of modified polyolefin polymer or the combination of the multiple types of modified polyolefin polymers present in the thermoplastic compound is greater than the Melt Flow Rate for the one type of unmodified polyolefin polymer or the combination of the multiple types of unmodified polyolefin polymers present in the thermoplastic compound.
8 more elements
A thermoplastic compound comprising:
- (a) from about 1 to about 30 weight percent, by weight of the thermoplastic compound, of an elastomer;
- (b) from about 5 to about 50 weight percent, by weight of the thermoplastic compound, of a modified polyolefin polymer comprising a polar functional group;
- (c) from about 10 to about 90 weight percent, by weight of the thermoplastic compound, of an unmodified polyolefin polymer;
- (d) from 0 to about 30 weight percent, by weight of the thermoplastic compound, of plasticizer;
- (e) from 0 to about 10 weight percent, by weight of the thermoplastic compound, of filler;
- and
- (f) from 0 to about 2 weight percent, by weight of the thermoplastic compound, of antioxidant;
- wherein the unmodified polyolefin polymer is selected from polypropylene homopolymer, polypropylene copolymer, and combinations thereof;
- wherein the modified polyolefin polymer includes one type or multiple types of modified polyolefin polymer and the unmodified polyolefin polymer includes one type or multiple types of unmodified polyolefin polymer;
- and
- wherein each type of the modified polyolefin polymer and each type of the unmodified polyolefin polymer has a Melt Flow Rate;
- wherein the one type of modified polyolefin polymer or a combination of the multiple types of modified polyolefin polymer has a Melt Flow Rate (190° C., 2.16 kg) of at least about 100 g/10 min;
- and
- wherein the Melt Flow Rate for the one type of modified polyolefin polymer or the combination of the multiple types of modified polyolefin polymers present in the thermoplastic compound is greater than the Melt Flow Rate for the one type of unmodified polyolefin polymer or the combination of the multiple types of unmodified polyolefin polymers present in the thermoplastic compound.
11 more elements
Dependencies are inferred from the claim text.