IP Library › Granted Patent US 7,153,895
Granted Patent B2
US 7,153,895 · App. 09/951,018 · Granted Dec 26, 2006

Blending of rubber compounds, fillers and plasticizers

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Quick Facts
Patent No.
US 7,153,895
App. No.
09/951,018
Granted
Dec 26, 2006
Kind
B2
Abstract

Disclosed are methods for the formation of a rubber/filler/curative/plasticizer compacted masterbatch which may be performed in two ways. In one embodiment, a rubber and a filler are intimately mixed for a time and under shear conditions sufficient to form a free flowing associated composition, then the composition is mixed with a plasticizer and a curative to form the compacted masterbatch. Alternatively, the starting material may be an already-formed free flowing associated composition of rubber, filler and optional curative, which is mixed with a plasticizer and optional curative to form the compacted masterbatch.

Claims (39)

1. A method for the formation of a solid non-powdery rubber/filler compacted masterbatch compound, which method comprises a) introducing into a mixing vessel a rubber, a filler and optionally a curative; b) intimately mixing said rubber, filler and optional curative for a time and under shear conditions sufficient to convert the components into a free flowing associated composition of rubber, filler and optional curative; c) adding a plasticizer and optionally a curative to said associated composition in said mixing vessel; and d) mixing said plasticizer, optional curative and said associated composition for a time sufficient to form a solid non-powdery compacted masterbatch compound; wherein a curative is added during at least one of steps a) and c).

2. The method of claim 1 , wherein the rubber is selected from the group consisting of natural rubber and synthetic rubbers.

3. The method of claim 2 , wherein the rubber is natural rubber.

4. The method of claim 2 , wherein the synthetic rubber is selected from the group consisting of ethylene-propylene-diene terpolymer (EPDM) rubber, ethylene-propylene rubber (EPR), styrene/butadiene rubber, acrylonitrile/butadiene rubber, polychloroprene, polybutadiene rubber, isobutylene-isoprene copolymer, and mixtures thereof.

5. The method of claim 4 , wherein the rubber is an EPDM rubber.

6. The method of claim 4 , wherein the rubber is an acrylonitrile/butadiene rubber.

7. The method of claim 4 , wherein the rubber is a styrene-butadiene rubber.

8. The method of claim 4 , wherein the rubber is a polybutadiene rubber.

9. The method of claim 1 , wherein the filler is selected from the group consisting of carbon black, hydrated amorphous silica, fumed silica, diatomaceous earth, talc, calcium carbonate, and mixtures thereof.

10. The method of claim 9 , wherein the filler is carbon black.

11. The method of claim 1 , wherein the plasticizer is a paraffinic, aromatic, or naphthenic extender oil; a monomeric phthalate, adipate or sebacate; a polyester adipate or sebacate oil; or mixtures thereof.

12. The method of claim 1 , wherein the weight ratio of rubber to filler is from about 1:0.15 to about 1:10.

13. The method of claim 12 , wherein the weight ratio of rubber to filler is from about 1:0.15 to about 1:1.5.

14. The method of claim 1 , wherein the rubber is substantially free of filler prior to step b) and wherein the rubber is in a substantially dry state prior to step b).

15. The method of claim 1 , wherein the rubber comprises a mixture of at least two different rubbers.

16. The method of claim 1 , wherein the filler comprises a mixture of at least two different fillers.

17. The method of claim 1 , wherein the curative is selected from the group consisting of N-cyclohexyl-2-benzothiazole sulfonamide; N-t-butyl-2-benzothiazole sulfenamide; 2-(morpholinothio)benzothiazole; 2-mercaptobenzothiazole; tetraethylthiuram disulfide; tetramethyithiuram monosulfide; tetramethyithiuram disulfide; zinc dimethyldithio carbamate; diphenyl guanidine; sulfur; insoluble sulfur; 4,4′ dithiodimorpholine; dipentamethylene thiuram tetrasulfide; dicumyl peroxide; 2,2′-bis(tert-butylperoxy)diisopropyl benzene; p-quinone dioxime, and combinations thereof.

18. The method of claim 1 , wherein the rubber introduced into the mixing vessel has an average particle size of less than 10 mm.

19. The method of claim 1 , wherein the plasticizer is present in an amount of from about 10 to about 160 parts per hundred parts of rubber.

20. The method of claim 1 , wherein the rubber of step a) is in bale form.

21. The method of claim 20 , wherein the rubber of step a) has a minimum particle size of at least 20 cm.

22. A method for the formation of a solid non-powdery rubber/filler compacted masterbatch compound, which method comprises a) introducing into a mixing vessel i) a free flowing associated composition of a rubber, a filler and optionally a curative; and ii), a plasticizer and optionally a curative, wherein a curative is added to the vessel in this step; and b) mixing said plasticizer, curative and said associated composition for a time sufficient to form a solid non-powdery compacted masterbatch compound.

23. The method of claim 22 , wherein the rubber is selected from the group consisting of natural rubber and synthetic rubbers.

24. The method of claim 7 , wherein the rubber is natural rubber.

25. The method of claim 23 , wherein the synthetic rubber is selected from the group consisting of EPDM rubber, EPR rubber, styrene/butadiene rubber, acrylonitrile/butadiene rubber, polychioroprene, polybutadiene rubber, isobutylene-isoprene copolymer, and mixtures thereof.

26. The method of claim 25 , wherein the rubber is an EPDM rubber.

27. The method of claim 25 , wherein the rubber is an acrylonitrile/butadiene rubber.

28. The method of claim 25 , wherein the rubber is a styrene-butadiene rubber.

29. The method of claim 25 , wherein the rubber is a polybutadiene rubber.

30. The method of claim 22 , wherein the filler is selected from the group consisting of carbon black, hydrated amorphous silica, fumed silica, diatomaceous earth, talc, calcium carbonate, and mixtures thereof.

31. The method of claim 30 , wherein the filler is carbon black.

32. The method of claim 22 , wherein the plasticizer is a paraffinic, aromatic, or naphthenic extender oil; a monomeric phthalate, adipate or sebacate; a polyester adipate or sebacate oil; or mixtures thereof.

33. The method of claim 22 , wherein the weight ratio of rubber to filler is from about 1:0.15 to about 1:10.

34. The method of claim 33 , wherein the weight ratio of rubber to filler is from about 1:0.15 to about 1:1.5.

35. The method of claim 22 , wherein the rubber comprises a mixture of at least two different rubbers.

36. The method of claim 22 , wherein the filler comprises a mixture of at least two different fillers.

37. The method of claim 22 , wherein the curative is selected from the group consisting of N-cyclohexyl-2-benzothiazole sulfenamide; N-t-butyl-2-benzothiazole sulfenamide; 2-(morpholinothio)benzothiazole; 2-mercaptobenzothiazole; tetraethylthiuram disulfide; tetramethylthiuram monosulfide; tetramethyithiuram disulfide; zinc dimethyldithio carbamate; diphenyl guanidine; sulfur; insoluble sulfur; 4,4′ dithiodimorpholine; dipentamethylene thiuram tetrasulfide; dicumyl peroxide; 2,2′-bis(tert-butylperoxy)diisopropyl benzene; p-quinone dioxime, and combination thereof.

38. The method of claim 22 , wherein the plasticizer is present in an amount of from about 10 to about 160 parts per hundred parts of rubber.

39. The method of claim 22 , wherein the rubber of step a) has a maximum particle size of about 10 mm.

Assignments (17)
RELEASE OF SECURITY INTEREST RECORDED AT REEL 030872 FRAME 0810 Recorded Oct 16, 2018
From: WELLS FARGO BANK
To: ADDIVANT USA, LLC
Reel/Frame 047240/0580 →
RELEASE OF FIRST LIEN INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded May 11, 2017
From: BANK OF AMERICA, N.A.
To: CHEMTURA CORPORATION; BIOLAB FRANCHISE COMPANY, LLC; BIO-LAB, INC.; CROMPTON COLORS INCORPORATED; CROMPTON HOLDING CORPORATION; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GREAT LAKES CHEMICAL GLOBAL, INC.; GT SEED TREATMENT, INC.; HOMECARE LABS, INC.; LAUREL INDUSTRIES HOLDINGS, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC
Reel/Frame 042447/0508 →
RELEASE OF SECOND LIEN INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded May 11, 2017
From: BANK OF AMERICA, N.A.
To: CHEMTURA CORPORATION; BIOLAB FRANCHISE COMPANY, LLC; BIO-LAB, INC.; CROMPTON COLORS INCORPORATED; CROMPTON HOLDING CORPORATION; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GREAT LAKES CHEMICAL GLOBAL, INC.; GT SEED TREATMENT, INC.; HOMECARE LABS, INC.; LAUREL INDUSTRIES HOLDINGS, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC
Reel/Frame 042449/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 1, 2014
From: CHEMTURA CORPORATION
To: ADDIVANT USA LLC
Reel/Frame 031895/0895 →
SECURITY INTEREST Recorded Jul 19, 2013
From: ADDIVANT USA, LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 030872/0810 →
PARTIAL RELEASE OF IP SECURITY AGREEMENT ABL Recorded May 8, 2013
From: BANK OF AMERICA, N.A.
To: CHEMTURA CORPORATION; BIO-LAB INC.; CROMPTON COLORS INCORPORATED; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; HOMECARE LABS, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC; AQUA CLEAR INDUSTRIES, LLC; ASEPSIS, INC.; NAUGATUCK TREATMENT COMPANY; CNK CHEMICAL REALTY CORPORATION; KEM MANUFACTURING CORPORATION
Reel/Frame 030407/0063 →
PARTIAL RELEASE OF IP SECURITY AGREEMENT TL Recorded May 8, 2013
From: BANK OF AMERICA, N.A.
To: CHEMTURA CORPORATION; BIO-LAB INC.; CROMPTON COLORS INCORPORATED; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; HOMECARE LABS, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC; AQUA CLEAR INDUSTRIES, LLC; ASEPSIS, INC.; NAUGATUCK TREATMENT COMPANY; CNK CHEMICAL REALTY CORPORATION; KEM MANUFACTURING CORPORATION
Reel/Frame 030411/0062 →
MERGER AND CHANGE OF NAME Recorded Jan 14, 2013
From: UNIROYAL CHEMICAL COMPANY, INC.
To: CHEMTURA CORPORATION
Reel/Frame 029699/0299 →
FIRST LIEN INTELLECTUAL PROPERTY SECURITY AGREEMENT. Recorded Mar 21, 2011
From: CHEMTURA CORPORATION; BIOLAB FRANCHISE COMPANY, LLC; BIO-LAB, INC.; CROMPTON COLORS INCORPORATED; CROMPTON HOLDING CORPORATION; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GREAT LAKES CHEMICAL GLOBAL, INC.; GT SEED TREATMENT, INC.; HOMECARE LABS, INC.; LAUREL INDUSTRIES HOLDINGS, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 026028/0622 →
INTELLECTUAL PROPERTY SECURITY RELEASE AGREEMENT Recorded Mar 21, 2011
From: CITIBANK, N.A.
To: CHEMTURA CORPORATION; A & M CLEANING PRODUCTS, LLC; ASCK, INC; BIOLAB COMPANY STORE, LLC; AQUA CLEAR INDUSTRIES, LLC; ASEPSIS, INC.; BIOLAB TEXTILES ADDITIVES, LLC; BIOLAB, INC.; CROMPTON COLORS INCORPORATED; CROMPTON MONOCHEM, INC.; CNK CHEMICAL REALTY CORPORATION; CROMPTON HOLDING CORPORATION; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GT SEED TREATMENT, INC.; ISCI, INC; GREAT LAKES CHEMICAL GLOBAL, INC.; HOMECARE LABS, INC.; KEM MANUFACTURING CORPORATION; LAUREL INDUSTRIES HOLDINGS, INC.; NAUGATUCK TREATMENT COMPANY; UNIROYAL CHEMICAL COMPANY LIMITED (DELAWARE); MONOCHEM, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC; WRL OF INDIANA, INC.; BIOLAB FRANCHISE COMPANY, LLC
Reel/Frame 026039/0142 →
SECDOND LIEN INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Mar 21, 2011
From: CHEMTURA CORPORATION; BIOLAB FRANCHISE COMPANY, LLC; BIO-LAB, INC.; CROMPTON COLORS INCORORATED; CROMPTON HOLDING CORPORATION; CLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GREAT LAKES CHEMICAL GLOBAL, INC.; GT SEED TREATMENT, INC.; HOMECARE LABS, INC.; HAOMECARE LABS, INC.; LAUREL INDUSTRIES HOLDINGS, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC
To: BANK OF AMERICA, N. A.
Reel/Frame 027881/0347 →
AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Feb 22, 2010
From: CHEMTURA CORPORATION; A & M CLEANING PRODUCTS, LLC; AQUA CLEAR INDUSTRIES, LLC; ASCK, INC.; ASEPSIS, INC.; BIOLAB COMPANY STORE, LLC; BIOLAB FRANCHISE COMPANY, LLC; BIOLAB TEXTILE ADDITIVES, LLC; BIO-LAB, INC.; CNK CHEMICAL REALTY CORPORATION; CROMPTON COLORS INCORPORATED; CROMPTON HOLDING CORPORATION; CROMPTON MONOCHEM, INC.; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GREAT LAKES CHEMICAL GLOBAL, INC.; GT SEED TREATMENT, INC.; HOMECARE LABS, INC.; ISCI, INC.; KEM MANUFACTURING CORPORATION; LAUREL INDUSTRIES HOLDINGS, INC.; MONOCHEM, INC.; NAUGATUCK TREATMENT COMPANY; RECREATIONAL WATER PRODUCTS, INC.; UNIROYAL CHEMICAL COMPANY LIMITED (DELAWARE); WEBER CITY ROAD LLC; WRL OF INDIANA, INC.
To: CITIBANK, N.A.
Reel/Frame 023998/0001 →
SECURITY AGREEMENT Recorded May 12, 2009
From: CHEMTURA CORPORATION; A & M CLEANING PRODUCTS, LLC; AQUA CLEAR INDUSTRIES, LLC; ASCK, INC.; ASEPSIS, INC.; BIOLAB TEXTILE ADDITIVES, LLC; BIO-LAB, INC.; CNK CHEMICAL REALTY CORPORATION; CROMPTON HOLDING CORPORATION; CROMPTON COLORS INCORPORATED; CROMPTON MONOCHEM, INC.; GREAT LAKES CHEMICAL CORPORATION; GREAT LAKES CHEMICAL GLOBAL, INC.; GT SEED TREATMENT, INC.; HOMECARE LABS, INC.; ISCI, INC.; KEM MANUFACTURING CORPORATION; LAUREL INDUSTRIES HOLDINGS, INC.; MONOCHEM, INC.; NAUGATUCK TREATMENT COMPANY; RECREATIONAL WATER PRODUCTS, INC.; UNIROYAL CHEMICAL COMPANY LIMITED (DELAWARE); WEBER CITY ROAD LLC; WRL OF INDIANA, INC.; BIOLAB COMPANY STORE, LLC; BIOLAB FRANCHISE COMPANY, LLC; GLCC LAUREL, LLC
To: CITIBANK, N.A.
Reel/Frame 022668/0658 →
RELEASE OF LIEN IN PATENTS Recorded Jul 13, 2005
From: DEUTSCHE BANK AG, NEW YORK BRANCH
To: UNIROYAL CHEMICAL COMPANY
Reel/Frame 016522/0117 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 10, 2004
From: UNIROYAL CHEMICAL COMPANY, INC.
To: DEUTSCHE BANK AG NEW YORK BRANCH
Reel/Frame 015377/0437 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 24, 2002
From: HOCHHEISER, JOSEPH M.; KONTOS, EMMANUEL G.; TOMLINSON, RICHARD W.
To: UNIROYAL CHEMICAL COMPANY, INC.
Reel/Frame 012548/0761 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2001
From: HOCHHEISER, JOSEPH M.; KONTOS, EMMANUEL G.; TOMLINSON, RICHARD W.
To: CROMPTON CORPORATION
Reel/Frame 012184/0930 →