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US 2001/0056153 A1Published application
Blend composition of acrylic type polymers and process for producing the same
AssigneeNok Corporation
InventorSeiji Nakagome
Life of this patent
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AssigneeNok Corporation
InventorSeiji Nakagome
Estimating the term…
To provide a method for producing a blend composition of an acrylic type polymer having an excellent mechanical characteristic as well as a low temperature characteristic, and to provide a blend composition of an acrylic type polymer, and also to provide a blend composition of an acrylic type polymer for sealing materials having an excellent abrasion resistance which is important for sealing materials. To prepare a blend composition of an acrylic type polymer by co-precipitation after mixing (A) an aqueous latex of a copolymer—showing about −10° C. to −65° C. of a glass transition temperature Tg—obtained by emulsion polymerization or suspension polymerization of at least one of an acrylic ester and methacrylic ester with a vinyl monomer containing crosslinking group with (B) an aqueous latex of copolymer—showing about 0° C. of a glass transition temperature Tg or a softening point—obtained by emulsion polymerization or suspension polymerization of at least one of an acrylic ester and methacrylic ester with a vinyl monomer having crosslinking group.
A method for producing a blend composition of an acrylic type polymer comprising the following steps of,
A blend composition of an acrylic type polymer comprising (A) component and (B) component, wherein (A) component comprising an acrylic type copolymer having at least one kind of monomer selected from the group of an acrylic ester and a methacrylic ester and a vinyl monomer having a crosslinkable group, and having a glass transition temperature or a softening point of about −10- −65° C., and the (B) component comprising a copolymer having at least one kind of monomer selected from the group of an acrylic ester and a methacrylic ester and a vinyl monomer having a crosslinkable group, and having a glass transition temperature or a softening point not less than 0° C.
A polymer composition for sealing materials comprising (A) component, (B) component and ciratives, wherein (A) component comprising an acrylic type copolymer having at least one kind of monomer selected from the group of an acrylic ester and a methacrylic ester and a vinyl monomer having a crosslinkable group, and having a glass transition temperature or a softening point of about −10- −65° C., and the (B) component comprising a copolymer having at least one kind of monomer selected from the group of an acrylic ester and a methacrylic ester and a vinyl monomer having a crosslinkable group, and having a glass transition temperature or a softening point not less than 0° C.
A polymer composition for the materials of oil seals comprising (A) component, (B) component and ciratives, wherein (A) component comprising an acrylic type copolymer having at least one kind of monomer selected from the group of an acrylic ester and a methacrylic ester and a vinyl monomer having a crosslinkable group, and having a glass transition temperature or a softening point of about −10-−65° C., and the (B) component comprising a copolymer having at least one kind of monomer selected from the group of an acrylic ester and a methacrylic ester and a vinyl monomer having a crosslinkable group, and having a glass transition temperature or a softening point not less than 0° C.
Dependencies are inferred from the claim text.