Polymeric compositions having low glass transition temperatures
First Claim
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1. A method for improving the processability of a matrix resin, comprising adding to said matrix resin a polymeric composition having a Polymer Size Index of 2 or higher and a glass transition temperature (Tg) of at most 20°
- C., wherein said polymeric composition comprises a first polymeric stage, wherein at least 50 weight percent of said first polymeric stage comprises a first polymeric component having units derived from one or more monomers selected from the group consisting of butadiene and C1 to C18 alkyl (meth)acrylates.
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Abstract
The present invention provides polymeric compositions having a high polymer size and a low Tg. These novel compositions are useful as plastic additives. Also provided is a method of improving the processing of a matrix resin by adding one or more of the novel polymeric compositions.
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14 Claims
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1. A method for improving the processability of a matrix resin, comprising adding to said matrix resin a polymeric composition having a Polymer Size Index of 2 or higher and a glass transition temperature (Tg) of at most 20°
- C., wherein said polymeric composition comprises a first polymeric stage, wherein at least 50 weight percent of said first polymeric stage comprises a first polymeric component having units derived from one or more monomers selected from the group consisting of butadiene and C1 to C18 alkyl (meth)acrylates.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A multi modal polymeric composition that can be used as a plastic additive, said multi modal polymeric composition comprising:
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a) a first ingredient comprising at least one polymer with Tg of 30°
C. or higher and polymeric particles of at least 30 nm, andb) a second ingredient comprising polymeric particles having an average particle size of at least 30 nm, a Polymer Size Index of 2 or higher and a Tg of at most 20°
C., said processing aid particles comprising a first polymeric stage, wherein at least 50 weight percent of said first polymeric stage comprises a first polymeric component having units derived from at least one monomer selected from the group consisting of butadiene and C1 to C18 alkyl (meth)acrylates;
wherein the weight ratio of said first component to said processing aid particles is from about 99.5/0.5 to about 50/50. - View Dependent Claims (11, 14)
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12. A polymeric composition having Polymer Size Index of 2 or higher and a glass transition temperature (Tg) of at most 20°
- C., said composition comprises a first polymeric stage, wherein at least 50 weight percent of the first polymeric stage comprises a first polymeric component having units derived from one or more monomers selected from the group consisting of butadiene and C1 to C18 alkyl (meth)acrylates.
- View Dependent Claims (13)
Specification