US2014323632A1PendingUtilityA1

Additive composition and polymer composition comprising the same

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Assignee: MILLIKEN & COPriority: Jan 17, 2011Filed: Jul 10, 2014Published: Oct 30, 2014
Est. expiryJan 17, 2031(~4.5 yrs left)· nominal 20-yr term from priority
Inventors:K. David Lake, Jr.Normand P. Miron
C08K 3/02C08K 2003/3063C08K 3/22C08K 3/30C08K 2003/2227C08K 2003/2224C08K 2003/026C08K 3/20
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Claims

Abstract

An additive composition comprises a plurality of first particles and a metal hydroxide compound. A polymer composition comprises a polymer, a plurality of first particles, and a metal hydroxide compound. The first particles comprise a magnesium oxysulfate compound.

Claims

exact text as granted — not AI-modified
1 - 8 . (canceled) 
     
     
         9 . A polymer composition comprising:
 (a) a thermoplastic polymer;   (b) a plurality of first particles, the particles comprising a magnesium oxysulfate compound; and   (c) a metal hydroxide compound,   wherein the weight of the first particles present in the polymer composition is about 15% or more of the combined total weight of the first particles and the metal hydroxide compound present in the polymer composition, and wherein the polymer composition contains less than 1% by weight of red phosphorous based on the total weight of the polymer composition.   
     
     
         10 . (canceled) 
     
     
         11 . The polymer composition of  claim 9 , wherein the thermoplastic polymer is a polyolefin. 
     
     
         12 . The polymer composition of  claim 11 , wherein the polyolefin is selected from the group consisting of polypropylene, polyethylene, and mixtures thereof. 
     
     
         13 . The polymer composition of  claim 9 , wherein the polymer is selected from the group consisting of polypropylene homopolymers, polypropylene copolymers, polypropylene impact copolymers, and mixtures thereof. 
     
     
         14 . The polymer composition of  claim 9 , wherein the particles comprise a magnesium oxysulfate compound selected from the group consisting of 5Mg(OH) 2 .MgSO 4 .3H 2 O; 5Mg(OH) 2 .MgSO 4 .2H 2 O; 3Mg(OH) 2 .MgSO 4 .8H 2 O; Mg(OH) 2 .MgSO 4 .5H 2 O; Mg(OH) 2 .2MgSO 4 .3H 2 O; and mixtures thereof. 
     
     
         15 . The polymer composition of  claim 9 , wherein at least a portion of the particles are in the form of whiskers, the whiskers having an average aspect ratio of about 7 or more. 
     
     
         16 . The polymer composition of  claim 9 , wherein the metal hydroxide compound is selected from the group consisting of magnesium hydroxide, aluminum hydroxide, and mixtures thereof. 
     
     
         17 . The polymer composition of  claim 16 , wherein the metal hydroxide compound is magnesium hydroxide. 
     
     
         18 . The polymer composition of  claim 16 , wherein the metal hydroxide compound is aluminum hydroxide. 
     
     
         19 . The polymer composition of  claim 9 , wherein the weight of the first particles present in the polymer composition is about 20% or more of the combined total weight of the first particles and the metal hydroxide compound present in the polymer composition. 
     
     
         20 . The polymer composition of  claim 9 , wherein the polymer composition contains less than 0.3% by weight of red phosphorous based on the total weight of the polymer composition. 
     
     
         21 . The polymer composition of  claim 9 , wherein the combined weight of the first particles and the metal hydroxide compound present in the polymer composition is about 25% to about 75% of the total weight of the polymer composition. 
     
     
         22 . The polymer composition of  claim 21 , wherein the combined weight of the first particles and the metal hydroxide compound present in the polymer composition is about 30% to about 70% of the total weight of the polymer composition.

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