초록 ▼

A method for preparing a thermoplastic elastomer is disclosed, said method comprising(I) mixing(A) a rheologically stable polyamide resin having a melting point or glass transition temperature of 25.degree. C. to 275.degree. C.,(B) a silicone base comprising(B') 100 parts by weight of a diorganopoly

A method for preparing a thermoplastic elastomer is disclosed, said method comprising(I) mixing(A) a rheologically stable polyamide resin having a melting point or glass transition temperature of 25.degree. C. to 275.degree. C.,(B) a silicone base comprising(B') 100 parts by weight of a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl groups in its molecule and(B′) 5 to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone base to said polyamide resin being greater than 35:65 to 85:15,(C) a compatibilizer selected from (i) a coupling agent, (ii) a functional diorganopolysiloxane or (iii) a copolymer comprising at least one diorganopolysiloxane block and at least one block selected from polyamide, polyether, polyurethane, polyurea, polycarbonate or polyacrylate,(D) an organohydrido silicon compound which contains an average of at least 2 silicon-bonded hydrogen groups in its molecule and(E) a hydrosilation catalyst,components (D) and (E) being present in an amount sufficient to cure said diorganopolysiloxane (B'); and(II) dynamically curing said diorganopolysiloxane (B').

대표청구항 ▼

1. A method for preparing a thermoplastic elastomer, said method comprising:(I) mixing (A) a rheologically stable polyamide resin having a melting point or glass transition temperature of 25.degree. C. to 275.degree. C., (B) a silicone base comprising (B') 100 parts by weight of a diorganopolysiloxa

1. A method for preparing a thermoplastic elastomer, said method comprising:(I) mixing (A) a rheologically stable polyamide resin having a melting point or glass transition temperature of 25.degree. C. to 275.degree. C., (B) a silicone base comprising (B') 100 parts by weight of a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl groups in its molecule and (B′) 5 to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone base to said polyamide resin being greater than 35:65 to 85:15, (C) for each 100 parts by weight of said polyamide resin, a compatibilizer selected from (i) from 0.1 to 5 parts by weight of a coupling agent having a molecular weight of less than 800 which contains at least two groups independently selected from ethylenically unsaturated group, epoxy, anhydride, silanol, carboxyl, hydroxyl, alkoxy, having 1 to 20 carbon atoms or oxazoline in its molecule, (ii) from 0.1 to 10 parts by weight of a functional diorganopolysiloxane having at least one group selected from epoxy, anhydride, silanol, carboxyl, amine, alkoxy having 1 to 20 carbon atoms or oxazoline in its molecule, or (iii) from 0.1 to 10 parts by weight of a copolymer comprising at least one diorganopolysiloxane block and at least one block selected from polyamide, polyether, polyurethane, polyurea, polycarbonate or polyacrylate, (D) an organohydrido silicon compound which contains an average of at least 2 silicon-bonded hydrogen groups in its molecule and (E) a hydrosilation catalyst, components (D) and (E) being present in an amount sufficient to cure said diorganopolysiloxane (B'); and (II) dynamically curing said diorganopolysiloxane (B').