公开(公告)号：DE69921083T2

公开(公告)日：2006-03-09

申请号：DE69921083

申请日：1999-07-29

Applicant: BASELL POLIOLEFINE SPA

Inventor： NIYOGI G

IPC: C08F255/00 ,  C08F255/02 ,  C08F255/04

Abstract: The thermal oxidative stability of acrylic grafted polymers is improved by (a) graft polymerizing monomers selected from the group consisting of (i) an ester or salt of an unsubstituted or 1-3 C alkyl-substituted acrylic acid and (ii) an ester or salt of an unsubstituted or 1-3 C alkyl-substituted acrylic acid and about 1 to about 10 mole %, based on the total monomers added, of an unsubstituted or 1-3 C alkyl-substituted acrylic acid, to a backbone of a propylene polymer material in the presence of a 4-vinyl-substituted 5-12 C cyclic 1-alkene, wherein the total amount of polymerized monomer is about 20 to about 200 parts per hundred parts of the propylene polymer material and the vinyl-substituted cyclic alkene is present in an amount of about 1 mole % to about 30 mole %, based on the total moles of monomer added, and (b) removing any unreacted grafting monomer from the resulting grafted propylene polymer material, decomposing any unreacted initiator, and deactivating any residual free radicals in the material, wherein steps (a) and (b) are carried out in a substantially non-oxidizing environment.

公开(公告)号：DE60106747D1

公开(公告)日：2004-12-02

申请号：DE60106747

申请日：2001-06-08

Applicant: BASELL POLIOLEFINE SPA

Inventor： NIYOGI G

IPC: C08L51/06 ,  C08F255/02 ,  C08J5/00 ,  C08K3/34 ,  C08K9/04

Abstract: A nanocomposite material comprises a smectite clay having exhangeable cations that has been treated with at least one organic swelling agent, uniformly dispersed in a graft copolymer having a backbone of a porous propylene polymer material, to which is graft polymerized at least one grafting monomer capable of being polymerized by free radicals, wherein the total inorganic content of the composite material is about 0.5% to about 10%, based on the total weight of the composite. The nanocomposite material is made by graft polymerizing at least one liquid monomer capable of being polymerized by free radicals onto a porous propylene polymer material in a non-oxidizing environment in the presence of a smectite clay and an organic free radical polymerization initiator, whereby the chains of polymerized monomer that are formed intercalate the clay and produce a uniform dispersion of clay particles within the particulate propylene polymer material.

公开(公告)号：DE60106747T2

公开(公告)日：2005-12-22

申请号：DE60106747

申请日：2001-06-08

Applicant: BASELL POLIOLEFINE SPA

Inventor： NIYOGI G

IPC: C08L51/06 ,  C08F255/02 ,  C08J5/00 ,  C08K3/34 ,  C08K9/04

Abstract: A nanocomposite material comprises a smectite clay having exhangeable cations that has been treated with at least one organic swelling agent, uniformly dispersed in a graft copolymer having a backbone of a porous propylene polymer material, to which is graft polymerized at least one grafting monomer capable of being polymerized by free radicals, wherein the total inorganic content of the composite material is about 0.5% to about 10%, based on the total weight of the composite. The nanocomposite material is made by graft polymerizing at least one liquid monomer capable of being polymerized by free radicals onto a porous propylene polymer material in a non-oxidizing environment in the presence of a smectite clay and an organic free radical polymerization initiator, whereby the chains of polymerized monomer that are formed intercalate the clay and produce a uniform dispersion of clay particles within the particulate propylene polymer material.

公开(公告)号：DE69921083D1

公开(公告)日：2004-11-18

申请号：DE69921083

申请日：1999-07-29

Applicant: BASELL POLIOLEFINE SPA

Inventor： NIYOGI G

IPC: C08F255/00 ,  C08F255/02 ,  C08F255/04

Abstract: The thermal oxidative stability of acrylic grafted polymers is improved by (a) graft polymerizing monomers selected from the group consisting of (i) an ester or salt of an unsubstituted or 1-3 C alkyl-substituted acrylic acid and (ii) an ester or salt of an unsubstituted or 1-3 C alkyl-substituted acrylic acid and about 1 to about 10 mole %, based on the total monomers added, of an unsubstituted or 1-3 C alkyl-substituted acrylic acid, to a backbone of a propylene polymer material in the presence of a 4-vinyl-substituted 5-12 C cyclic 1-alkene, wherein the total amount of polymerized monomer is about 20 to about 200 parts per hundred parts of the propylene polymer material and the vinyl-substituted cyclic alkene is present in an amount of about 1 mole % to about 30 mole %, based on the total moles of monomer added, and (b) removing any unreacted grafting monomer from the resulting grafted propylene polymer material, decomposing any unreacted initiator, and deactivating any residual free radicals in the material, wherein steps (a) and (b) are carried out in a substantially non-oxidizing environment.