Graft Polymers with cross-linked polyester elastomers
First Claim
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1. In a polymeric composition comprising from 80 to 30 wt% of at least one vinyl monomer graft polymerized in the presence of from 20 to 70 wt% of a polyester, the improvement wherein said polyester is a cross-linked, aliphatic polyester elastomer prepared by the steps ofA. Providing a solution comprising from 95 to 80 parts by weight of a water-immiscible organic solvent, from 5 to 20 parts by weight of an aliphatic, polyester elastomer and from 0.5 to 5 wt%, based on polyester, of an organic peroxide;
- B. Mixing said solution with an equal volume of water containing from 1 to 10 wt%, based on polyester, of a surfactant;
C. Passing said mixture through a homogenizer to form an emulsion;
D. Heating said emulsion to remove said solvent; and
E. Further heating said emulsion to cross-link said polyester and form a stable latex.
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Abstract
Graft polymers comprising at least one monomer selected from vinyl aromatic monomers and acrylic monomers polymerized in the presence of a cross-linked, aliphatic polyester elastomer.
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5 Claims
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1. In a polymeric composition comprising from 80 to 30 wt% of at least one vinyl monomer graft polymerized in the presence of from 20 to 70 wt% of a polyester, the improvement wherein said polyester is a cross-linked, aliphatic polyester elastomer prepared by the steps of
A. Providing a solution comprising from 95 to 80 parts by weight of a water-immiscible organic solvent, from 5 to 20 parts by weight of an aliphatic, polyester elastomer and from 0.5 to 5 wt%, based on polyester, of an organic peroxide; -
B. Mixing said solution with an equal volume of water containing from 1 to 10 wt%, based on polyester, of a surfactant; C. Passing said mixture through a homogenizer to form an emulsion; D. Heating said emulsion to remove said solvent; and E. Further heating said emulsion to cross-link said polyester and form a stable latex. - View Dependent Claims (2, 3, 4, 5)
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Specification