Mixtures of polydiorganosiloxane polyamide-containing components and organic polymers

Abstract

This invention relates to a mixture of a polydiorganosiloxane polyamide-containing material and an organic polymer.

1 . A mixture comprising: at least one copolymer comprising at least two repeat units of Formula I-a: 
     
       
         
         
             
             
         
       
     
     wherein:
 each R 1  is independently an aucyl, haloalkyl, aralkyl, alkenyl, aryl, or aryl substituted with an alkyl, alkoxy, or halo; 
 each Y is independently an alkylene, aralkylene, or a combination thereof; 
 G is a divalent residue equal to a diamine of fonnula R 3 HN—G—NHR 3  minus the two—NHR 3  groups; 
 R 3  is hydrogen or alkyl or R 3  taken together with G and to the nitrogen to which they are both attached form a heterocyclic group; 
 each group B is independently a covalent bond, an alkylene of 4-20 carbons, an aralkylene, an arylene, or a combination thereof; 
 n is independently an integer of 0 to 1500; 
 p is an integer of 1 to 10; and 
 at least one organic polymer selected from the group of a hot melt processable thermoplastic, a hot melt processable elastomeric thermoset, a silicone polymer, and mixtures thereof; 
 wherein the at least one organic polymer is not a copolymer comprising at least two repeat units of Formula I-a, is not a rackifying resin, and is not nylon in the form of fibers; and 
 wherein the mixture does not occur at the interface between two layers. 
 
   
   
       2 . The mixture of  claim 1 , wherein the copolymer comprises at least two repeat units of Formula I-b: 
     
       
         
         
             
             
         
       
     
     and wherein the at least one organic polymer is not a copolymer comprising at least two repeat units of Formula I-b. 
   
   
       3 . The mixture of  claim 2 , wherein each R 1  of the copolyiner is methyl. 
   
   
       4 . The mixture of  claim 2 , wherein at least 50 percent of the R 1  groups of the copolymer are phenyl, methyl, or combinations thereof. 
   
   
       5 . The mixture of  claim 2 , wherein each Y of the copolymer is an alkylene having 1 to 10 carbon atoms, phenylene bonded to an ailkylene having 1 to 10 carbon atoms, or phenylene bonded to a first alkylene having 1 to 10 carbon atoms and to a second alkylene having 1 to 10 carbon atoms. 
   
   
       6 . The mixture of  claim 5 , wherein Y is an alkylene having 1 to 4 carbon atoms. 
   
   
       7 . The mixture of  claim 2 , wherein the copolymer has a first repeat unit where p is equal to 1 and a second repeat unit where p is at least 2. 
   
   
       8 . The mixture of  claim 2 , wherein G of the copolymer is an alkylene, heteroalkylene, arylene, aralkylene, polydiorganosiloxane, or a combination thereof. 
   
   
       9 . The mixture of  claim 2 , wherein n of the copolymer is at least 40. 
   
   
       10 . The mixture of  claim 2 , wherein R 3  of the copolymer is hydrogen. 
   
   
       11 . A composition comprising a mixture of  claim 1  and at least one tackifying material. 
   
   
       12 . The composition of  claim 11  wherein the tackifying material is a silicate resin or an organic tackifier. 
   
   
       13 . A composition comprising a mixture of  claim 1  and one or more additives tat are not hot melt processable. 
   
   
       14 . A vibration damping constrained layer construction comprising at least one substrate having a stiffness and at least one layer comprising a tackified composition of  claim 11 , wherein the tackified composition is fixed to the substrate. 
   
   
       15 . A vibration damping composite comprising a flexible substrate and coated thereon a mixture of  claim 1 . 
   
   
       16 . A bi-directional vibration damping constrained layer construction comprising at least two rigid members, each rigid member having a broad surface proximate to a broad surface of another rigid member and closely spaced therefrom and a tackified composition of  claim 11 , wherein the tackified composition is contained between the closely spaced rigid members and adhered to the members. 
   
   
       17 . A pressure sensitive adhesive article comprising a flexible substrate and coated thereon a tackified composition of  claim 11 . 
   
   
       18 . A pressure sensitive adhesive article comprising a layer comprising a mixture of  claim 1  having a surface that is non-tacky and a surface that is tacky. 
   
   
       19 . A release coated article comprising a flexible substrate and coated thereon a mixture of  claim 1 . 
   
   
       20 . An article comprising a mixture of  claim 1 . 
   
   
       21 . The article of  claim 20 , further comprising a substrate, wherein the mixture comprising the copolymer is in a layer adjacent to the substrate. 
   
   
       22 . The article of  claim 21 , further comprising a first substrate and a second substrate, wherein the mixture comprising the copolymer is in a layer positioned between the first substrate and the second substrate. 
   
   
       23 . A multilayer film comprising one or more layers comprising a mixture of  claim 1 . 
   
   
       24 . A process for producing the mixture of  claim 1 , wherein the process comprises:
 continuously providing at least one polydiorganosiloxane polyamide-containing component and at least one organic polymer to a vessel;   mixing the components to fonn a mixture; and   conveying the mixture from the vessel.   
   
   
       25 . The process of  claim 24  wherein the mixing is under substantially solventless conditions. 
   
   
       26 . A process for producing the mixture of  claim 1 , wherein the process comprises:
 continuously providing reactant components for making at least one polydiorganosiloxane polyamide and at least one organic polymer that is not reactive with the reactant components;   mixing the components;   allowing the reactant components to react to form a polydiorganosiloxane amide segmented copolymer, and   conveying the mixture from the reactor.   
   
   
       27 . The mixture according to  claim 1  wherein the mixture comprises 0.05 to 80 weight % of the copolymer of Fonnula I-a. 
   
   
       28 . The mixture according to  claim 1  wherein the mixture comprises 0.05 to 2.5 weight % of the copolymer of Formula I-a. 
   
   
       29 . The mixture according to  claim 1  wherein the mixture is a polymer processing aid. 
   
   
       30 . A method for modifying the processability of a polymeric material, the method comprising combining components comprising:
 an organic polymer; and   a copolymer comprising at least two repeat units of Formula I-a:   
     
       
         
         
             
             
         
       
     
     wherein:
 each R 1  is independently an alkyl, haloalkyl, aralkyl, alkenyl, aryl, or aryl substituted with an alkyl, alkoxy, or halo; 
 each Y is independently an alkylene, aralkylene, or a combination thereof; 
 G is a divalent residue equal to a diamine of formula R 3 HN—G—NHR 3  minus the two—NHR 3  groups; 
 R 3  is hydrogen or alkyl or R 3  taken together with G and to the nitrogen to which they are both attached form a heterocyclic group; 
 each group B is independently a covalent bond, an alkylene of 4-20 carbons, an aralkylene, an arylene, or a combination thereof; 
 n is independently an integer of 0 to 1500; and 
 p is an integer of 1 to 10. 
 
   
   
       31 . The method of  claim 30  wherein the copolymer comprises at least two repeat units of Formula I-b: 
     
       
         
         
             
             
         
       
     
   
   
       32 . The method of  claim 30  wherein the organic polymer is a thermoplastic polymer. 
   
   
       33 . The method of  claim 32  wherein the thermoplastic polymer is hot melt processable. 
   
   
       34 . The method of  claim 30  wherein combining components forms a mixture. 
   
   
       35 . The method of  claim 34  further comprising extruding the mixture. 
   
   
       36 . The method of  claim 35  wherein the mixture comprises 0.05 to 2.5 weight % of the copolymer of Formula I-a. 
   
   
       37 . The method of  claim 36  wherein the mixture comprises 0.05 to 1 weight % of the copolymer of Formula I-a. 
   
   
       38 . The method of  claim 37  wherein the mixture comprises 0.05 to 0.1 weight % of the copolymer of Formula I-a. 
   
   
       39 . The method of  claim 36 , wherein the conditions for extruding the mixture comprise conditions selected from the group consisting of lower pressure, lower power, lower torque, lower temperature, and combinations thereof, compared to conditions for extruding the organic polymer without the copolymer of Formula I-a.