Polymeric urea-urethane rheology control agents and a...

Details Polymeric urea-urethane rheology control agents and a... Polymeric urea-urethane rheology control agents and a...

2005-03-22

2005-03-22

Gorr, Rachel (Department: 1711)

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S059000, C528S075000, C525S123000, C525S126000, C525S128000, C525S453000, C525S459000

Reexamination Certificate

active

06870024

ABSTRACT:
The invention relates to a polymeric urea-urethane obtainable by first reacting a diisocyanate with a polyol to form a doubly NCO-terminated urethane prepolymer. Further reaction is subsequently carried out with a mixture of a primary monoamine and a primary diamine. After the second reaction the polymeric urea-urethane present is substantially free of isocyanate and of the monoamine and diamine used. It can be used as an agent for controlling the rheology of liquid polymers or polymer solutions.

REFERENCES:
patent: 4882408 (1989-11-01), Blum
patent: 6420466 (2002-07-01), Haubennestel et al.
patent: 0007594 (1980-02-01), None
patent: 1188779 (2002-03-01), None
patent: 1408165 (1975-10-01), None
patent: WO 0049063 (2000-08-01), None
PCT Search Report, Jan. 13, 2004.

Affiliated with

Also associated with

Rating

Polymeric urea-urethane rheology control agents and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymeric urea-urethane rheology control agents and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymeric urea-urethane rheology control agents and a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3399207