US4265957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layered, fiberglass-reinforced floor covering systems
Assignee: Sandoz AG
•
Filing: 1979-11-08
•
Granted: 1981-05-05
•
Expires: 1999-11-08
Abstract
Abstract This invention discloses multi-layered, fiberglass-reinforced floor covering systems which provide such highly desired properties as chemical resistance, abrasion resistance, low-temperature curing, thermal shock resistance and the capability of bridging shrinkage cracks, control joints and the like. One particularly desirable application of the floor constructions of this invention is in the pharmaceutical and food industry. This application is based upon the fact that the floor constructions provided are stain resistant, color stable, and do not permit the growth of fungi or bacteria. The multi-layered floor constructions of the present invention comprise in ascending laminated form a floor substrate such as a porous concrete floor, a primer coat of an epoxy resin, a fiberglass-reinforced base coat of an epoxy resin, a top coat of an epoxy resin containing filler material, and a sealer coat of a polyurethane resin.
Inventors
- 👤 Wesley A. Severance
- 👤 Julie Y. L. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:10
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/12; B; B05; B05D; B05D5/00; B05D5/02; B05D7/00; B05D7/50; B05D7/56; B05D7/57; B05D7/576; B05D7/58; B05D7/586; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24372; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T428/31551
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
77 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coating; a cured top coat of an epoxy resin containing filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of a polyurethane resin applied over and bonded to said top coat.
Claim 2
Dependent Claim
77 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coating; a cured top coat of an epoxy resin containing filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of a polyurethane resin applied over and bonded to said top coat.
Claim 3
Dependent Claim
19 words
A floor construction in accordance with claim 1 wherein said floor substrate is the surface of a concrete floor.
Claim 4
Dependent Claim
25 words
A floor construction in accordance with claim 1 wherein said epoxy resin of said primer coat is a condensation product of epichlorohydrin and bisphenol A.
Claim 5
Dependent Claim
17 words
A floor construction in accordance with claim 1 wherein said primer coat additionally comprises a curing agent.
Claim 6
Dependent Claim
15 words
A floor construction in accordance with claim 4 wherein said curing agent is an amine.
Claim 7
Dependent Claim
29 words
A floor construction in accordance with claim 4 wherein said curing agent is an adduct from a polyglycidyl ether of a polyphenyl and a cycloaliphatic or cycloaliphatic-aliphatic di-primary diamine.
Claim 8
Dependent Claim
24 words
A floor construction in accordance with claim 1 wherein said primer coat has a dry thickness of from about 1 to about 5 mils.
Claim 9
Dependent Claim
25 words
A floor construction in accordance with claim 1 wherein said epoxy resin of said base coat is a condensation product of epichlorohydrin and bisphenol A.
Claim 10
Dependent Claim
21 words
A floor construction in accordance with claim 1 wherein said fiberglass-reinforced base coat of epoxy resin additionally comprises a curing agent.
Claim 11
Dependent Claim
15 words
A floor construction in accordance with claim 9 wherein said curing agent is an amine.
Claim 12
Dependent Claim
29 words
A floor construction in accordance with claim 9 wherein said curing agent is an adduct from a polyglycidyl ether of a polyphenyl and a cycloaliphatic or cycloaliphatic-aliphatic di-primary diamine.
Claim 13
Dependent Claim
25 words
A floor construction in accordance with claim 1 wherein said fiberglass-reinforced base coat has a dry thickness from about 1/8 inch to about 1/32 inch.
Claim 14
Dependent Claim
26 words
A floor construction in accordance with claim 1 wherein said epoxy resin of said base coat is identical to said epoxy resin of said primer coat.
Claim 15
Dependent Claim
25 words
A floor construction in accordance with claim 1 wherein said epoxy resin of said top coat is a condensation product of epichlorohydrin and bisphenol A.
Claim 16
Dependent Claim
32 words
A floor construction in accordance with claim 1 wherein said filler material of said top coat comprises solid particles a major portion of which have particle sizes less than about 20 mesh.
Claim 17
Dependent Claim
33 words
A floor construction in accordance with claim 1 wherein said filler material of said top coat comprises an amount greater than about 50% by weight based upon the weight of said top coat.
Claim 18
Dependent Claim
17 words
A floor construction in accordance with claim 1 wherein said top coat additionally comprises a curing agent.
Claim 19
Dependent Claim
15 words
A floor construction in accordance with claim 17 wherein said curing agent is an amine.
Claim 20
Dependent Claim
28 words
A floor construction in accordance with claim 17 wherein curing agent is an adduct from a polyglycidyl ether of a polyphenyl and a cycloaliphatic or cycloaliphatic-aliphatic di-primary diamine.
Claim 21
Dependent Claim
23 words
A floor construction in accordance with claim 1 wherein said top coat has a dry thickness from about 1/4 to about 1/16 inch.
Claim 22
Dependent Claim
23 words
A floor construction in accordance with claim 1 wherein said epoxy resins of said top coat, primer coat and base coat are identical.
Claim 23
Dependent Claim
25 words
A floor construction in accordance with claim 1 wherein said polyurethane resin of said sealer coat is derived from reacting a polyisocyanate with a polyol.
Claim 24
Dependent Claim
15 words
A floor construction in accordance with claim 22 wherein said polyisocyanate is an aromatic diisocyanate.
Claim 25
Dependent Claim
15 words
A floor construction in accordance with claim 22 wherein said polyisocyanate is an aliphatic diisocyanate.
Claim 26
Dependent Claim
20 words
A floor construction in accordance with claim 22 wherein said polyol is an epoxy polyol, polyester polyol or acrylic polyol.
Claim 27
Dependent Claim
20 words
A floor construction in accordance with claim 1 wherein said sealer coat additionally comprises a polymer of urea and formaldehyde.
Claim 28
Dependent Claim
16 words
A floor construction in accordance with claim 1 wherein said sealer coat additionally comprises a catalyst.
Claim 29
Dependent Claim
23 words
A floor construction in accordance with claim 1 wherein said sealer coat has a dry thickness from about 2 to about 20 mils.
Claim 30
Dependent Claim
160 words
A multi-layered floor construction comprising: a porous concrete substrate; a cured, primer coat applied over and partially absorbed into said substrate, said primer coat comprising an epoxy resin and a curing agent and having a dry thickness of less than about 5 mils; a cured, fiberglass-reinforced base coat applied over and bonded to said primer coat, said base coat comprising a fiberglass mat, an epoxy resin and a curing agent, and having a dry thickness from about 1/8 to about 1/32 inch; a cured, top coat applied over and bonded to said fiberglass-reinforced base coat, said top coat comprising an epoxy resin, a curing agent and filler particles, and having a dry thickness from about 1/4 to about 1/16 inch; and a cured, sealer coat applied over and bonded to said top coat, said sealer coat comprising a polyurethane resin derived from reacting a polyisocyanate with a polyol, and having a dry thickness from about 2 to about 20 mils.
Claim 31
Dependent Claim
160 words
A multi-layered floor construction comprising: a porous concrete substrate; a cured, primer coat applied over and partially absorbed into said substrate, said primer coat comprising an epoxy resin and a curing agent and having a dry thickness of less than about 5 mils; a cured, fiberglass-reinforced base coat applied over and bonded to said primer coat, said base coat comprising a fiberglass mat, an epoxy resin and a curing agent, and having a dry thickness from about 1/8 to about 1/32 inch; a cured, top coat applied over and bonded to said fiberglass-reinforced base coat, said top coat comprising an epoxy resin, a curing agent and filler particles, and having a dry thickness from about 1/4 to about 1/16 inch; and a cured, sealer coat applied over and bonded to said top coat, said sealer coat comprising a polyurethane resin derived from reacting a polyisocyanate with a polyol, and having a dry thickness from about 2 to about 20 mils.
Claim 32
Dependent Claim
15 words
A floor construction in accordance with claim 29 wherein said polyisocyanate is an aliphatic diisocyanate.
Claim 33
Dependent Claim
20 words
A floor construction in accordance with claim 29 wherein said polyol is an epoxy polyol, polyester polyol or acrylic polyol.
Claim 34
Dependent Claim
18 words
A floor construction in accordance with claim 29 wherein said sealer coat additionally comprises a urea formaldehyde polymer.
Claim 35
Dependent Claim
16 words
A floor construction in accordance with claim 29 wherein said sealer coat additionally comprises a catalyst.
Claim 36
Dependent Claim
80 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coat; a cured top coat of an epoxy resin containing a filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of polyurethane resin and polyethylene wax applied over and bonded to said top coat.
Claim 37
Dependent Claim
80 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coat; a cured top coat of an epoxy resin containing a filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of polyurethane resin and polyethylene wax applied over and bonded to said top coat.
Claim 38
Dependent Claim
87 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coat; a cured top coat of an epoxy resin containing a filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of a polyurethane resin, derived from reacting an aromatic polyisocyanate and a polyol, applied over and bonded to said top coat.
Claim 39
Dependent Claim
87 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coat; a cured top coat of an epoxy resin containing a filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of a polyurethane resin, derived from reacting an aromatic polyisocyanate and a polyol, applied over and bonded to said top coat.
Claim 40
Dependent Claim
83 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coat; a cured top coat of an epoxy resin containing a filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of a polyurethane resin and a urea formaldehyde polymer applied over and bonded to said top coat.
Claim 41
Dependent Claim
83 words
A multi-layered floor construction comprising: a floor substrate; a cured primer coat of an epoxy resin applied over and adhering to said substrate; a cured, fiberglass-reinforced base coat of an epoxy resin applied over and bonded to said primer coat; a cured top coat of an epoxy resin containing a filler material applied over and bonded to said fiberglass-reinforced base coat; and a cured sealer coat of a polyurethane resin and a urea formaldehyde polymer applied over and bonded to said top coat.
Claim 42
Dependent Claim
223 words
A method of forming a multi-layered floor construction in accordance with claim 1 comprising: preparing the surface of a floor substrate to be covered; applying an epoxy resin as a primer coat over said prepared floor substrate, said primer coat being capable of adhering to said substrate; curing said primer coat to form a cured primer coat; applying an epoxy resin over said cured, primer coat, said epoxy resin being capable of bonding to said primer coat; while said epoxy resin is uncured placing a permeable fiberglass mat over said epoxy resin; permitting said epoxy resin to thoroughly permeate said fiberglass mat so as to form a substantially unitary mass of epoxy resin having fiberglass mat dispersed throughout; curing said substantially unitary mass of epoxy resin and fiberglass mat to form a cured, fiberglass-reinforced base coat; applying an epoxy resin as a top coat over said cured, fiberglass-reinforced base coat, said top coat being capable of bonding to said base coat and having filler material admixed therewith; curing said top coat containing filler material to form a cured top coat; applying a polyurethane resin as a sealer coat over said cured top coat, said sealer coat being capable of bonding to said cured, top coat; and curing said sealer coat to form a cured, sealer coat and thereby to form said floor construction.
Claim 43
Dependent Claim
27 words
A method in accordance with claim 37 wherein said floor substrate comprises concrete and said preparation of the surface of said floor substrate comprises sand-blasting or acid-etching.
Claim 44
Dependent Claim
22 words
A method in accordance with claim 37 wherein said epoxy resins of said primer coat, base coat and top coat are identical.
Claim 45
Dependent Claim
30 words
A method in accordance with claim 37 wherein said filler material comprises particles of an inorganic material, a major portion of which have particle sizes less than about 20 mesh.
Claim 46
Dependent Claim
23 words
A method in accordance with claim 37 wherein polyurethane resin of said sealer coat is derived from reacting a polyisocyanate with a polyol.
Claim 47
Dependent Claim
22 words
A method in accordance with claim 37 wherein said primer coat, said base coat and said top coat additionally comprise curing agents.
Claim 48
Dependent Claim
17 words
A method in accordance with claim 37 wherein said sealer coat additionally comprises a urea formaldehyde polymer.
Claim 49
Dependent Claim
14 words
A method in accordance with claim 37 wherein sealer coat additionally comprises a catalyst.
References Cited (Backward Citations)
US3334555A
Cited
US3396138A
Cited
US3486925A
Cited
US3510339A
Cited
US3795533A
Cited
US3908043A
Cited
US4013598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |