Flexible polyurea foams having controlled load bearing qualities

Details Flexible polyurea foams having controlled load bearing qualities Flexible polyurea foams having controlled load bearing qualities

1988-10-28

1992-04-21

Lovering, Richard D.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

25218313, 252350, C08J 912, C08K 316, C09K 300

Patent

active

051068842

ABSTRACT:
The invention includes a process for preparing a flexible, water-blown polyurea foam by reacting a reaction mixture containing at least one polyisocyanate component and an active hydrogen component, wherein active hydrogen compounds of relatively high equivalent weight have an average of about 1.5 to about 4 active hydrogen-containing groups per molecule, of which active hydrogen-containing groups: an average of (a) from about 5 to about 60 percent are primary aliphatic amine groups or (b) at least about 25 percent are primary aromatic, secondary aliphatic, Lewis acid-blocked primary or secondary aliphatic or aromatic amine groups or mixtures of such groups. An amount of at least one alkali metal halide salt effective to increase load bearing strength of the foam is incorporated into the reaction mixture. Differing amounts of alkali metal halide salts are suitably incorporated into different areas of the foam to produce areas having differing load bearing strengths. The invention includes the foams formed by the processes of the invention as well as active hydrogen compositions containing the alkali metal halide salts and useful in the processes.

REFERENCES:
patent: 3068188 (1962-12-01), Beste et al.
patent: 3526531 (1970-09-01), Asano et al.
patent: 3531512 (1970-09-01), Hardt et al.
patent: 3573247 (1971-03-01), Minobe et al.
patent: 3574148 (1971-04-01), Windemuth et al.
patent: 3645976 (1972-02-01), Suzuki et al.
patent: 3743620 (1973-07-01), Frye
patent: 3753933 (1973-08-01), Olstowski et al.
patent: 3773695 (1973-11-01), Argabright et al.
patent: 3838076 (1974-09-01), Moss et al.
patent: 3871911 (1975-03-01), Conacher, Jr.
patent: 3876604 (1975-04-01), Caruso et al.
patent: 3888831 (1975-06-01), Kogon
patent: 3891606 (1975-06-01), Kogon
patent: 3899438 (1975-08-01), Kalil
patent: 3900447 (1975-08-01), van Gulick
patent: 3917792 (1975-11-01), Conacher, Jr.
patent: 4029730 (1977-06-01), Schroeder
patent: 4052613 (1977-10-01), Murphy et al.
patent: 4071279 (1978-01-01), Chung
patent: 4071492 (1978-01-01), Bethea et al.
patent: 4073858 (1978-02-01), Chung
patent: 4075150 (1978-02-01), Hoeschele
patent: 4080345 (1978-03-01), Riemhofer
patent: 4095637 (1978-06-01), Krishnan
patent: 4282344 (1981-08-01), Caruso
patent: 4330454 (1982-05-01), Kimball
patent: 4357401 (1982-11-01), Andre et al.
patent: 4391742 (1983-07-01), Steigerwald et al.
patent: 4436841 (1984-03-01), Rasshofer et al.
patent: 4438223 (1984-03-01), Hunter
patent: 4546116 (1985-10-01), Muller et al.
patent: 4575518 (1986-03-01), Rasshofer et al.
patent: 4618630 (1986-10-01), Knobel et al.
patent: 4686240 (1987-08-01), Bailey et al.
patent: 4714574 (1987-12-01), Tenhagen
patent: 4743624 (1988-05-01), Blount
patent: 4845133 (1989-07-01), Priester, Jr. et al.
patent: 4980388 (1990-12-01), Herrington et al.
Hawley's Condensed Chemical Dictionary, 11th Edition, Revised by N. I. Sax et al., Van Nostrand Reinhold, New York, (1987), p. 433.
The American Heritage Dictionary, 2nd College Edition, Houghton Mifflin Co., Boston, Mass., (1985), p. 215.
"The Industrial Production . . . ", by M. J. Brown, pp. 538-543, Polyurethanes World Congress 1987--Sep. 29-Oct. 2, 1987.
"Anlage fur Weichschaumsitze . . . ", by A. Bauer, W. Dausch and A. Daniel, pp. 544-552, Polyurethanes World Congress 1987--Sep. 29-Oct. 2, 1987.
"Effect of Certain Additives on the Properties of Polyurethane Foam", by G. A. Razuvaev et al., pp. 11-12, (1981).
Derwent 35771K/15, Chemical Abstract 85:33857t, Chemical Abstract 78:73140r, and Derwent 86-129274/20.
Chemical Abstracts 104:51350a, 102:186443z, 95:133759n.

Affiliated with

Also associated with

Rating

Flexible polyurea foams having controlled load bearing qualities does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flexible polyurea foams having controlled load bearing qualities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible polyurea foams having controlled load bearing qualities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1586646