US4025683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane-based water-proofing/sound-proofing coating composition
Assignee: Chevron USA Inc
•
Filing: 1975-08-15
•
Granted: 1977-05-24
•
Expires: 1995-08-15
Abstract
Abstract A water-proofing/sound-proofing coating composition comprises, in order, from a surface to be coated (A) a prime coat comprising (1) a paint binder, (2) a heat absorber, comprising a dark, preferably black, pigment, (3) a volatile solvent, and optionally (4) an inert fller, and (B) a membrane coat comprising (1) a polyurethane formed from (a) a mixture of high molecular weight polyols and low molecular weight chain stiffeners and (b) a polyisocyanate, (2) a nonvolatile extender and (3) a volatile solvent. The surfacing composition can also include an overlay of a wearing surface such as an asphalt concrete. A process is also provided for preparing a cast-in-place surfacing composition comprising (A) applying a primer to a surface to be coated, (B) allowing the prime coat to stand for a time sufficient to allow entrained gases to escape from the primed surface, and (C) applying to the surface of the prime coat a membrane-forming coat comprising (1) a mixture of a high molecular weight polyol and a low molecular weight chain stiffener, (2) a substantially inert nonvolatile extender, (3) a polyisocyanate, (4) a volatile solvent, and (5) a polyurethane-forming reaction catalyst.
Inventors
- 👤 Arthur L. Meader, Jr.
- 👤 William L. Runyon, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/48; C04B41/488; C04B41/4884; C04B41/52; C04B41/60; C04B41/61; C04B41/62; C04B41/63; C04B41/70; C09; C09D; C09D175/00; C09D175/04; E; E01; E01C; E01C7/00; E01C7/08; E01C7/35; E01C7/358; E01D; E01D19/00; E01D19/08; E01D19/083; C04B2111/00; C04B2111/00474; C04B2111/0075; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31551; Y10T428/31598
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
136 words
A surface coated with a cast-in-place surfacing composition comprising, in order, from a the surface: A. a prime coat comprising: (1) a paint vehicle, (2) a dark heat absorbing filler, (3) a volatile solvent, and (4) optionally, an inert filler, and B. a membrane coat comprising 20 to 80 parts by weight of a polyurethane, 20 to 80 parts by weight of a substantially inert nonvolatile extender selected from the group consisting of cut-back asphalts and extender oils, and 0 to 20 parts by weight of a volatile solvent, said polyurethane formed by reacting a polyisocyanate with a polyurethane precursor at a mol ratio of 1.1-1.5:1, said polyurethane precursor of said membrane coat comprising 15 to 60 parts by weight of a high-molecular-weight polyol and 2 to 10 parts by weight of a low-molecular-weight chain stiffener.
Claim 2
Dependent Claim
136 words
A surface coated with a cast-in-place surfacing composition comprising, in order, from a the surface: A. a prime coat comprising: (1) a paint vehicle, (2) a dark heat absorbing filler, (3) a volatile solvent, and (4) optionally, an inert filler, and B. a membrane coat comprising 20 to 80 parts by weight of a polyurethane, 20 to 80 parts by weight of a substantially inert nonvolatile extender selected from the group consisting of cut-back asphalts and extender oils, and 0 to 20 parts by weight of a volatile solvent, said polyurethane formed by reacting a polyisocyanate with a polyurethane precursor at a mol ratio of 1.1-1.5:1, said polyurethane precursor of said membrane coat comprising 15 to 60 parts by weight of a high-molecular-weight polyol and 2 to 10 parts by weight of a low-molecular-weight chain stiffener.
Claim 3
Dependent Claim
232 words
The surface of claim 1 comprising, in order from the surface, (A) a prime coat comprising 15 to 70 parts by weight of (1) a paint vehicle, from 2 to 70 parts by weight of (2) a heat absorber, comprising a dark pigment, 20 to 75 parts by weight of (3) a volatile solvent, and 0 to 50 parts by weight of (4) a substantially inert filler, and (B) a membrane coat comprising 20 to 80 parts by weight of (1) a polyurethane formed by reacting 15 to 60 parts by weight of (a) a polyurethane precursor with 6 to 20 parts by weight of (b) a polyisocyanate, 20 to 80 parts by weight of (2) a substantially inert nonvolatile extender, and 0 to 20 parts of (3) a volatile solvent, wherein said membrane coat comprises 40 to 60 parts by weight of said polyurethane, 40 to 60 parts by weight of said extender and 0 to 10 parts by weight of said volatile solvent, wherein said polyurethane of said membrane coat is formed by reacting 10 to 15 parts by weight of a polyisocyanate with 30 to 55 parts by weight of a polyurethane precursor at a mol ratio of 1.1-1.5:1, said polyurethane precursor comprising 30 to 55 parts by weight of a high molecular weight polyol and 4 to 8 parts by weight of a low molecular weight chain stiffener.
Claim 4
Dependent Claim
17 words
The surface of claim 2 wherein said prime coat has a thickness of 0.001 to 0.010 inch.
Claim 5
Dependent Claim
17 words
The surface of claim 3 wherein said membrane coat has a thickness of 1/50 to 1/2 inch.
Claim 6
Dependent Claim
18 words
The surface of claim 4 wherein said high-molecular-weight polyol has an average molecular weight of 1,800 to 3,000.
Claim 7
Dependent Claim
17 words
The surface of claim 5 wherein said low-molecular-weight chain stiffener is selected from 1,4-butanediol, 1,4-bis(hydroxymethyl)cyclohexane and N,N,bis(2-hydoxypropyl)aniline.
Claim 8
Dependent Claim
15 words
The surface composition of claim 6 wherein said low molecular weight chain stiffener is N,N-bis(2-hydroxypropyl)-aniline.
Claim 9
Dependent Claim
36 words
The surface composition of claim 7 wherein the mol ratio of the isocyanate reactive groups of said low molecular weight chain stiffener to the isocyanate reactive groups of said high molecular weight polyol is from 1.5-2.5:1.
Claim 10
Dependent Claim
35 words
The surface of claim 8 comprising, in order, from a coated surface: (A) said prime coat, (B) said membrane coat, (C) a tack coat comprising asphalt, and (D) a wearing surface coat comprising asphalt concrete.
Claim 11
Dependent Claim
33 words
The surface of claim 9 wherein the asphalt of said tack coat has a penetration of 70 to 120 and the wearing surface coat has a thickness of 1/4 inch to 6 inches.
Claim 12
Dependent Claim
16 words
The surface of claim 10 wherein said wearing surface coat has a thickness of 1-4 inches.
Claim 13
Dependent Claim
207 words
A process for coating a surface comprising: A. applying a prime coat to said surface, said prime coat comprising: (1) a paint vehicle, (2) a dark heat absorbing filler, (3) a volatile solvent, (4) optionally, an inert filler, B. allowing said prime coat to stand for a time sufficient to allow entrained gases to escape from said coat and said primed surface, C. applying to the surface of the prime coat a membrane-forming coating comprising: (1) 15 to 60 parts by weight of a polyurethane precursor, (2) 20 to 80 parts by weight of a substantially inert nonvolatile extender selected from the group consisting of cut-back asphalts and extender oils, (3) 6 to 20 parts by weight of a polyisocyanate, (4) 0 to 20 parts by weight of a volatile solvent, and (5) 0 to 1.0 part by weight of a polyurethane-forming reaction catalyst, wherein said polyurethane precursor comprises 15 to 60 parts by weight of a high molecular weight polyol and 2 to 10 parts by weight of a low molecular weight chain stiffener, wherein said membrane coat is applied a minimum of two hours after application of said prime coat and during a period in which the temperature of the primed surface is not rising.
Claim 14
Dependent Claim
207 words
A process for coating a surface comprising: A. applying a prime coat to said surface, said prime coat comprising: (1) a paint vehicle, (2) a dark heat absorbing filler, (3) a volatile solvent, (4) optionally, an inert filler, B. allowing said prime coat to stand for a time sufficient to allow entrained gases to escape from said coat and said primed surface, C. applying to the surface of the prime coat a membrane-forming coating comprising: (1) 15 to 60 parts by weight of a polyurethane precursor, (2) 20 to 80 parts by weight of a substantially inert nonvolatile extender selected from the group consisting of cut-back asphalts and extender oils, (3) 6 to 20 parts by weight of a polyisocyanate, (4) 0 to 20 parts by weight of a volatile solvent, and (5) 0 to 1.0 part by weight of a polyurethane-forming reaction catalyst, wherein said polyurethane precursor comprises 15 to 60 parts by weight of a high molecular weight polyol and 2 to 10 parts by weight of a low molecular weight chain stiffener, wherein said membrane coat is applied a minimum of two hours after application of said prime coat and during a period in which the temperature of the primed surface is not rising.
Claim 15
Dependent Claim
271 words
A process for coating a surface comprising: A. applying a prime coat to said surface, said prime coat comprising: (1) a paint vehicle, (2) a dark heat absorbing filler, (3) a volatile solvent, and (4) optionally, an inert filler, B. allowing said prime coat to stand for a time sufficient to allow entrained gases to escape from said coat and said primed surface, C. applying to the surface of the prime coat a membrane-forming coating comprising: (1) 15 to 60 parts by weight of a polyurethane precursor, (2) 20 to 80 parts by weight of a substantially inert nonvolatile extender selected from the group consisting of cut-back asphalts and extender oils, (3) 6 to 20 parts by weight of a polyisocyanate, (4) 0 to 20 parts by weight of a volatile solvent, and (5) 0 to 1.0 part by weight of a polyurethane-forming reaction catalyst, wherein said polyurethane precursor comprises 15 to 60 parts by weight of a high molecular weight polyol and 2 to 10 parts by weight of a low molecular weight chain stiffener, wherein said membrane coat is applied a minimum of two hours after application of said prime coat and during a period in which the temperature of the primed surface is not rising, D. applying to the surface of said membrane-forming coat a tack coat comprising molten asphalt having a penetration of 70 to 110, and E. applying to the surface of said tack coat an asphalt concrete comprising 3 to 12 parts by weight of an asphalt having a penetration of 70 to 150 and 88 to 97 parts by weight of a mineral aggregate.
Claim 16
Dependent Claim
271 words
A process for coating a surface comprising: A. applying a prime coat to said surface, said prime coat comprising: (1) a paint vehicle, (2) a dark heat absorbing filler, (3) a volatile solvent, and (4) optionally, an inert filler, B. allowing said prime coat to stand for a time sufficient to allow entrained gases to escape from said coat and said primed surface, C. applying to the surface of the prime coat a membrane-forming coating comprising: (1) 15 to 60 parts by weight of a polyurethane precursor, (2) 20 to 80 parts by weight of a substantially inert nonvolatile extender selected from the group consisting of cut-back asphalts and extender oils, (3) 6 to 20 parts by weight of a polyisocyanate, (4) 0 to 20 parts by weight of a volatile solvent, and (5) 0 to 1.0 part by weight of a polyurethane-forming reaction catalyst, wherein said polyurethane precursor comprises 15 to 60 parts by weight of a high molecular weight polyol and 2 to 10 parts by weight of a low molecular weight chain stiffener, wherein said membrane coat is applied a minimum of two hours after application of said prime coat and during a period in which the temperature of the primed surface is not rising, D. applying to the surface of said membrane-forming coat a tack coat comprising molten asphalt having a penetration of 70 to 110, and E. applying to the surface of said tack coat an asphalt concrete comprising 3 to 12 parts by weight of an asphalt having a penetration of 70 to 150 and 88 to 97 parts by weight of a mineral aggregate.
Claim 17
Dependent Claim
19 words
The process of claim 13 wherein said asphalt concrete is applied to yield a compacted thickness of 1/4-6 inches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |