Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2006-04-18
2006-04-18
Cameron, Erma (Department: 1762)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C427S393400, C427S393600, C427S397000
Reexamination Certificate
active
07029725
ABSTRACT:
The invention relates to an improvement in a process for imparting barrier properties to porous substrates, such as, concrete, masonry products, and wood products. The process comprises the steps of: applying an aqueous based sealing composition comprising a polymeric resin to said porous substrate, evaporating the water and forming a water repellent coating of said polymeric resin on said porous substrate. The improvement comprises: deriving the polymeric resin from an aqueous based polymer emulsion comprising a polymer comprised of emulsion polymerized units of vinyl acetate and ethylene, preferably with a carboxylic acid monomer, the polymer containing amorphous and crystalline ethylene segments and having:(a) a crystalline melting point (Tm) ranging from 35 to 110° C., preferably 50 to 100° C.; measured at a heat rate of 20° C./minute; and,(b) a tensile storage modulus of at least 1×105dynes/cm2at 115° C. measured at 6.28 rad/sec.
REFERENCES:
patent: 3355322 (1967-11-01), Worrall et al.
patent: 3754983 (1973-08-01), Parker
patent: 3900620 (1975-08-01), Gilman et al.
patent: 4229507 (1980-10-01), Kai et al.
patent: 4276329 (1981-06-01), Vasishth et al.
patent: 4285997 (1981-08-01), Vasishth et al.
patent: 4702957 (1987-10-01), Mudge
patent: 5051129 (1991-09-01), Cuthbert et al.
patent: 5369168 (1994-11-01), Famili et al.
patent: 5702509 (1997-12-01), Pellerite et al.
patent: 5872181 (1999-02-01), Daniels et al.
patent: 6063858 (2000-05-01), Daniels et al.
patent: 6166113 (2000-12-01), Haerzschel et al.
patent: 6319978 (2001-11-01), Daniels et al.
patent: 6395817 (2002-05-01), Rabasco et al.
patent: 6555641 (2003-04-01), Parker et al.
patent: 6559259 (2003-05-01), Kohlhammer et al.
patent: 6593412 (2003-07-01), Rabasco et al.
patent: 2003/0073777 (2003-04-01), Eknoian et al.
patent: 2003/0121445 (2003-07-01), Herbert et al.
patent: 2004/0096683 (2004-05-01), Ikeda et al.
patent: 2004/0241475 (2004-12-01), Morabito
patent: 1069169 (2001-01-01), None
patent: 09087061 (1995-09-01), None
patent: 2000-238011 (1999-02-01), None
Abstract of Mizumachi et al, Mokuzai Gakkaishi, 25(4), pp 288-295, 1979.
Hegedus Charles Raymond
Pepe Frank Ralph
Rabasco John Joseph
Air Products Polymers, L.P.
Bongiorno Mary E.
Brewer Russell L.
Cameron Erma
LandOfFree
Process for providing barrier properties to porous substrates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for providing barrier properties to porous substrates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for providing barrier properties to porous substrates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3541178