Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1995-02-17
1996-07-02
Nutter, Nathan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521131, 521137, 521142, 521155, C08G 1814
Patent
active
055322840
ABSTRACT:
An improved closed cell polymer foam and foaming agent involving the use of a halocarbon blowing agent (e.g., HCFC-22, HCFC-123, HCFC-123a, and HCFC-141b) in combination with an effective amount of a gas barrier resin (e.g., an ethylene/vinyl acetate copolymer, ethylene/acrylic ester copolymer or acrylic ester polymer) uniformly dispersed in the continuous polymeric phase. The presence of the gas barrier resin is shown to significantly reduce the escape of blowing agent from and/or entry of air into the foam resulting in low thermal conductivity over a longer period of time and improved thermal insulation value.
REFERENCES:
patent: 3222304 (1965-12-01), Ingram
patent: 3344221 (1968-08-01), Moody et al.
patent: 3984597 (1976-10-01), Haack et al.
patent: 4075139 (1978-02-01), Greer
patent: 4119584 (1978-10-01), Papa et al.
patent: 4156703 (1979-05-01), Harrop
patent: 4243717 (1981-01-01), Gahmig
patent: 4251584 (1981-02-01), Engelen et al.
patent: 4283500 (1981-08-01), Armstrong et al.
patent: 4359539 (1982-11-01), Hoki et al.
patent: 4370378 (1983-01-01), Zabrocki et al.
patent: 4379859 (1983-04-01), Hirosawa et al.
patent: 4427795 (1984-01-01), Dorrestijn et al.
patent: 4515407 (1985-05-01), McCullough et al.
patent: 4515907 (1985-05-01), McCullough et al.
patent: 4572865 (1986-02-01), Gluck et al.
patent: 4636529 (1987-01-01), Crooker
patent: 4640933 (1987-02-01), Park
patent: 4663361 (1987-05-01), Park
patent: 4694026 (1987-09-01), Park
patent: 4694027 (1987-09-01), Park
patent: 4789690 (1988-12-01), Milovanovic-Lerik et al.
patent: 4795763 (1989-01-01), Gluck et al.
patent: 4894395 (1990-01-01), Park
patent: 4898893 (1990-02-01), Ashida
patent: 4927863 (1990-05-01), Bartlett et al.
patent: 4931484 (1990-06-01), Hovis et al.
patent: 4945119 (1990-07-01), Smits et al.
patent: 4972002 (1990-11-01), Volkert
patent: 4972003 (1990-11-01), Grunbauer et al.
patent: 4997706 (1991-03-01), Smits et al.
patent: 5001164 (1991-03-01), Smits et al.
patent: 5032623 (1991-07-01), Keske et al.
"A Fundament Study of the Thermal Conductivity Ageing of Rigid PUR Foam . . . " Cunningham et al. 32nd Annual Polurethane Technical/Marketing Conf., Oct. 1-4, 1989 pp. 56-62.
"Permeation Studies For HCFC In Rigid Polyurethane Foams" Du Pont brochure Dec. 1989.
* Copy of 88849 reference is not attached. However, a copy of the English equivalent 1,079,256 is attached.
Dishart, Grazzo, and Ascough; The Dupont Program of Fluorocarbon Alternative Blowing Agents for Polyurethane Foams, Polyurethane World Congress, Oct. 1987.
Dishart, Creazzo, and Ascough; The DuPont Program on Fluorocarbon Alternative Blowing Agents for Polyurethane Foams; Polyurethane World Congress, 1987--Sep.--Oct.
Bartlett Philip L.
Creazzo Joseph A.
Hammel Howard S.
Boyer Michael K.
Cooney Jr. John M.
E. I. Du Pont de Nemours and Company
Nutter Nathan M.
LandOfFree
Polymer foams containing gas barrier resins does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymer foams containing gas barrier resins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer foams containing gas barrier resins will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1506897