Process to make storage stable polymer formulations

Patent metadata

Field	Value
Publication number	US-2016304676-A1
Application number	US-201415102078-A
Country	US
Kind code	A1
Filing date	Dec 15, 2014
Priority date	Dec 16, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

Disclosed is a process for making stable and consistent polymer formulations with desirable sensorial qualities.

First claim

1 . A method for making a polymer formulation, comprising:
forming a heated mixture comprising a polymer and an oil, wherein the temperature of the heated mixture is at least about the melting temperature of the polymer; cooling the mixture at a cooling rate less than or equal to about 0.7° C./minute.

2 . The method of claim 1 , further comprising cooling the heated mixture to a temperature between about 50° C. to about 80° C.

3 . The method of claim 1 , further comprising transferring the cooled mixture to one or more containers when the temperature of the cooled mixture is between about 50° C. to about 80° C.

4 . The method of claim 3 , wherein the temperature of the cooled mixture is about 60° C. to about 70° C.

5 . The method of claim 1 , wherein the polymer comprises at least one metallocene catalyzed polyolefin with a density greater than 0.90 g/cm 3 , and at least one metallocene catalyzed polyolefin with a density lesser than or equal to 0.90 g/cm 3 .

6 . The method of claim 5 , wherein the weight ratio of at least one metallocene catalyzed polyolefin with a density greater than 0.90 g/cm 3 and at least one metallocene catalyzed polyolefin with a density lesser than or equal to 0.90 g/cm 3 is about 3:1 to about 1:1.

7 . The method of claim 1 , wherein the average melt index of the polymer is between about 1 and about 20.

8 . The method of claim 1 , wherein the oil is a natural oil comprising one or more fatty acids.

9 . The method of claim 1 , wherein the oil is a synthetic oil.

10 . The method of claim 1 , wherein the oil is C 14 to C 22 hydrocarbon oil.

11 . The method of claim 1 , wherein the heated mixture is formed by adding the polymer to an oil at ambient temperature and heating the resulting mixture.

12 . The method of claim 1 , wherein the heated mixture is formed by adding the polymer to a pre-heated oil and heating the resulting mixture.

13 . The method of claim 12 , wherein the pre-heated oil is heated to a temperature greater than or equal to about 110° C.

14 . The method of claim 1 , wherein the cooling rate is about 0.35° C./minute.

15 . The method of claim 1 , wherein the cooling rate is about 0.20° C./minute.

16 . A method for making a polyolefin formulation, comprising:
forming a heated mixture comprising a polyolefin and an oil, wherein the temperature of the heated mixture is at least about the melting temperature of the polymer; cooling the mixture at a cooling rate less than or equal to about 0.7° C./minute,
wherein the polyolefin comprises at least one metallocene catalyzed polyolefin with a density greater than 0.90 g/cm 3 , and at least one metallocene catalyzed polyolefin with a density lesser than or equal to 0.90 g/cm 3 .

17 . A method according to claim 1 , wherein the polymer comprises an ethylene/octene copolymer, ethylene/butene copolymer, ethylene/hexene copolymer, ethylene/butene/hexene terpolymer, ethylene/hexene copolymer, ethylene/propylene/hexene copolymer, ethylene/butene/hexene terpolymer, or propylene/alpha-olefin copolymer.

18 . A method for making a polymer formulation having a viscosity of between about 100,000 and about 1,000,000 cP, comprising:
forming a heated mixture comprising a polymer and an oil, wherein the temperature of the heated mixture is at least about the melting temperature of the polymer; cooling the mixture at a cooling rate less than or equal to about 0.7° C./minute.

19 . A method according to claim 18 , wherein the polymer formulation has a viscosity of between about 400,000 and about 500,000 cP.

20 . A method according to claim 18 , wherein the polymer formulation is a gel.

Assignees

• Dow Global Technologies Llc

Inventors

• Trauth Daniel M
• Wan Qichun
• Kar Kishore K
• Walker Justin J
• Neubauer Anthony
• Malotky David L

Classifications

• C08J3/092 Primary

  Hydrocarbons · CPC title

• C08J2323/16

  Ethene-propene or ethene-propene-diene copolymers · CPC title

• A61K2800/10

  General cosmetic use · CPC title

• C08J2323/14

  Copolymers of propene (C08J2323/16 takes precedence) · CPC title

• A61K8/8111

  Homopolymers or copolymers of aliphatic olefines, e.g. polyethylene, polyisobutene; Compositions of derivatives of such polymers · CPC title