Viscosity index improver for lubricant compositions

Details Viscosity index improver for lubricant compositions Viscosity index improver for lubricant compositions

2006-03-15

2010-02-16

Harlan, Robert D. (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S502000, C524S230000, C525S088000, C525S191000

Reexamination Certificate

active

07662881

ABSTRACT:
A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/α-olefin interpolymer. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block copolymer has a number of unique characteristics disclosed here. Such block copolymers offer the possibility of improved low temperature performance and flexibility in formulating motor oil, gear lubricants and greases, etc.

REFERENCES:
patent: 2973344 (1961-02-01), Fasce
patent: 2997432 (1961-08-01), Koble et al.
patent: 3873642 (1975-03-01), Jezl
patent: 4146492 (1979-03-01), Cusano et al.
patent: 4299931 (1981-11-01), Coran et al.
patent: 4429079 (1984-01-01), Shibata et al.
patent: 4510031 (1985-04-01), Matsumura et al.
patent: 4780228 (1988-10-01), Gardiner et al.
patent: 4798081 (1989-01-01), Hazlitt et al.
patent: 5068047 (1991-11-01), Chung et al.
patent: 5266626 (1993-11-01), Hert et al.
patent: 5322728 (1994-06-01), Davey et al.
patent: 5391629 (1995-02-01), Turner et al.
patent: 5468810 (1995-11-01), Hayakawa et al.
patent: 5594080 (1997-01-01), Waymouth et al.
patent: 5597881 (1997-01-01), Winter et al.
patent: 5610253 (1997-03-01), Hatke et al.
patent: 5624991 (1997-04-01), Harada et al.
patent: 5733980 (1998-03-01), Cozewith et al.
patent: 5783531 (1998-07-01), Andrew et al.
patent: 5798420 (1998-08-01), Cozewith et al.
patent: 5868984 (1999-02-01), Winter et al.
patent: 5892076 (1999-04-01), Nickias
patent: 5916953 (1999-06-01), Jacoby et al.
patent: 5969070 (1999-10-01), Waymouth et al.
patent: 5994255 (1999-11-01), Nickias et al.
patent: 6008262 (1999-12-01), McKay et al.
patent: 6025448 (2000-02-01), Swindoll et al.
patent: 6096668 (2000-08-01), Abuto et al.
patent: 6110880 (2000-08-01), Verstrate et al.
patent: 6114457 (2000-09-01), Markel et al.
patent: 6121402 (2000-09-01), Machida et al.
patent: 6136937 (2000-10-01), Lai et al.
patent: 6147180 (2000-11-01), Markel et al.
patent: 6160029 (2000-12-01), Chaudhary et al.
patent: 6187424 (2001-02-01), Kjellqvist et al.
patent: 6197404 (2001-03-01), Varona
patent: 6262203 (2001-07-01), Chien et al.
patent: 6362252 (2002-03-01), Prutkin
patent: 6455638 (2002-09-01), Laughner et al.
patent: 6537472 (2003-03-01), Masubuchi
patent: 6566446 (2003-05-01), Parikh et al.
patent: 6566544 (2003-05-01), Waymouth et al.
patent: 6815023 (2004-11-01), Tatarka et al.
patent: 7005395 (2006-02-01), Zafiroglu et al.
patent: 2003/0027954 (2003-02-01), Becke et al.
patent: 2003/0195128 (2003-10-01), Deckman et al.
patent: 2003/0216518 (2003-11-01), Tau et al.
patent: 2004/0082750 (2004-04-01), Tau et al.
patent: 2004/0092662 (2004-05-01), Goto et al.
patent: 2004/0121922 (2004-06-01), Okada et al.
patent: 2004/0158011 (2004-08-01), Jain et al.
patent: 2004/0192147 (2004-09-01), Smith et al.
patent: 2005/0009993 (2005-01-01), Morioka et al.
patent: 2006/0030667 (2006-02-01), Yalvac et al.
patent: 2006/0199896 (2006-09-01), Walton et al.
patent: 2008/0299857 (2008-12-01), Harding et al.
patent: 0 274 906 (1988-07-01), None
patent: 0 877 050 (1998-11-01), None
patent: 1 026 184 (2000-08-01), None
patent: 0 958 313 (2002-09-01), None
patent: 1 262 498 (2002-12-01), None
patent: 1262498 (2002-12-01), None
patent: 2002-206007 (2002-07-01), None
patent: 2004-204058 (2004-07-01), None
patent: 2004-204058 (2004-07-01), None
patent: WO 95/27745 (1995-10-01), None
patent: WO 95/27746 (1995-10-01), None
patent: WO 98/34970 (1998-08-01), None
patent: WO 99/35171 (1999-07-01), None
patent: WO 00/37514 (2000-06-01), None
patent: WO 02/066540 (2002-08-01), None
patent: WO 02/079322 (2002-10-01), None
patent: WO 03/014046 (2003-02-01), None
patent: WO 2005/090425 (2005-09-01), None
patent: WO 2005/090426 (2005-09-01), None
patent: WO 2005/090426 (2005-09-01), None
patent: WO 2005/090427 (2005-09-01), None

Affiliated with

Also associated with

Rating

Viscosity index improver for lubricant compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Viscosity index improver for lubricant compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Viscosity index improver for lubricant compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4223348