Defoamer for water reducer admixture

Details Defoamer for water reducer admixture Defoamer for water reducer admixture

2005-02-22

2005-02-22

Cheung, William K. (Department: 1713)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C106S823000, C106S808000, C106S727000

Reexamination Certificate

active

06858661

ABSTRACT:
An exemplary admixture system for cementitious compositions, comprises a polycarboxylic acid type water reducer and a tertiary amine defoamer having an average molecular weight of 100-1500 and more preferably 200-750. The defoamer permits a stable admixture formulation and helps to achieve a controllable level of entrained air in a concrete mix. Cementitious compositions and methods for modifying the same, using the tertiary amine defoamers, are also described herein.

REFERENCES:
patent: 4471100 (1984-09-01), Tsubakimoto et al.
patent: 4589995 (1986-05-01), Fukumoto et al.
patent: 4870120 (1989-09-01), Tsubakimoto et al.
patent: 5369198 (1994-11-01), Albrecht et al.
patent: 5393343 (1995-02-01), Darwin et al.
patent: 5661206 (1997-08-01), Tanaka et al.
patent: 6139623 (2000-10-01), Darwin et al.
patent: 6187841 (2001-02-01), Tanaka et al.
patent: 6214958 (2001-04-01), Fukumoto et al.
patent: 28514088 (1988-11-01), None
patent: 16310890 (1990-06-01), None
International Search Report, Applicaion No. PCT/US02/13226, Sep. 5, 2003.

Affiliated with

Also associated with

Rating

Defoamer for water reducer admixture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Defoamer for water reducer admixture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Defoamer for water reducer admixture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3443205