Functionalized block composite and crystalline block composite compositions

Abstract

The invention provides functionalized block composites and crystalline block composites. In particular, the invention provides a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent or a functionalized olefin-based polymer formed from at least (A) and (B): (A) a crystalline block composite comprising: a block copolymer comprising a propylene-based crystalline block and crystalline ethylene-based block; a propylene-based crystalline polymer; and, a crystalline ethylene-based polymer; and (B) at least one functionalization agent.

1 . A composition comprising a functionalized olefin-based polymer formed from at least (A) and (B):
 (A) a block composite comprising:
 i) a block copolymer comprising a crystalline propylene-based block and an ethylene/α-olefin block; 
 ii) a crystalline propylene-based polymer; and, 
 iii) an ethylene/α-olefin polymer; and 
   (B) at least one functionalization agent.   
     
     
         2 . A composition comprising a functionalized olefin-based polymer formed from at least (A) and (B):
 (A) a crystalline block composite comprising:
 i) a block copolymer comprising a crystalline propylene-based block and an crystalline ethylene-based block; 
 ii) a crystalline propylene-based polymer; and, 
 iii) an crystalline ethylene-based polymer; and 
   (B) at least one functionalization agent.   
     
     
         3 . The composition of  claim 1  wherein the functionalization agent is selected from silane, maleic anhydride, peroxide, and amine. 
     
     
         4 . The composition of  claim 2  wherein the functionalization agent is selected from silane, maleic anhydride, peroxide, and amine. 
     
     
         5 . The composition of  claim 1  wherein the crystalline propylene-based block comprises an amount greater than 90 mol % of propylene, the ethylene/α-olefin block comprises an amount of 10 mol % to 90 mol % of ethylene, and the functionalization agent is a silane for grafting onto polymers in the block composite and having the formula CH 2 ═CR—(COO) x (C n H 2n ) y SiR′ 3 , where R is a hydrogen atom or methyl group; x and y are 0 or 1, with the proviso that when x is 1, y is 1; n is an integer from 1 to 12 inclusive, and each R′ independently is an organic group. 
     
     
         6 . The composition of  claim 2  wherein the crystalline propylene-based block comprises an amount greater than 90 mol % of propylene, the crystalline ethylene/α-olefin block comprises an amount of 10 mol % to 90 mol % of ethylene, and the functionalization agent is a silane for grafting onto polymers in the crystalline block composite and having the formula CH 2 ═CR—(COO) x (C n H 2n ) y SiR′ 3 , where R is a hydrogen atom or methyl group;
 x and y are 0 or 1, with the proviso that when x is 1, y is 1; n is an integer from 1 to 12 inclusive, and each R′ independently is an organic group. 
 
     
     
         7 . The composition of  claim 1  wherein the crystalline propylene-based block comprises an amount greater than 90 mol % of propylene, the ethylene/α-olefin block comprises an amount of 10 mol % to 90 mol % of ethylene, and the functionalization agent is maleic anhydride for grafting onto polymers in the block composite. 
     
     
         8 . The composition of  claim 2  wherein the crystalline propylene-based block comprises an amount greater than 90 mol % of propylene, the crystalline ethylene/α-olefin block comprises an amount of 10 mol % to 90 mol % of ethylene, and the functionalization agent is maleic anhydride for grafting onto polymers in the crystalline block composite. 
     
     
         9 . The composition of  claim 1  wherein the crystalline propylene-based block comprises an amount greater than 90 mol % of propylene, the ethylene/α-olefin block comprises an amount of 10 mol % to 90 mol % of ethylene, and the functionalization agent is amine for grafting onto polymers in the block composite. 
     
     
         10 . The composition of  claim 2  wherein the crystalline propylene-based block comprises an amount greater than 90 mol % of propylene, the crystalline ethylene/α-olefin block comprises an amount of 10 mol % to 90 mol % of ethylene, and the functionalization agent is amine for grafting onto polymers in the crystalline block composite.