Patent US3928281A successfully refreshed from Google Patents.
US3928281A
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Backing agent for carpet
Assignee: Mitsubishi Chemical Corp
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Filing: 1974-09-03
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Granted: 1975-12-23
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Expires: 1994-09-03
Abstract
Abstract A backing agent for adhering a carpet backing to a carpet comprising 1. A MIXTURE OF ABOUT 90 TO 20 PERCENT BY WEIGHT OF ATACTIC POLYPROPYLENE AND ABOUT 10 TO 80 PERCENT BY WEIGHT OF A URETHANE PREPOLYMER HAVING AN ISOCYANATE GROUP AT THE TERMINALS OF THE MOLECULE, AND 2. ABOUT 5 TO 60 PERCENT BY WEIGHT OF AN INORGANIC FILLER BASED ON THE TOTAL WEIGHT OF THE MIXTURE AND THE INORGANIC FILLER.
Inventors
- 👤 Taku Uchigaki
- 👤 Masataka Noro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B7/00; B32B7/04; B32B7/12; C08K; C08K3/00; C08K3/01; C08K3/013; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L75/00; C08L75/04; C09; C09D; C09D123/00; C09D123/02; C09D123/10; C09D123/12; C09D175/00; C09D175/04; D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0071; D06N7/0078; B32B2471/00; B32B2471/02; D06N2203/00; D06N2203/04; D06N2203/042; D06N2203/06; D06N2203/068; D06N2205/00; D06N2205/06; Y; Y10; Y10S; Y10S524/00; Y10S524/915
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
12 words
A BACKING AGENT FOR ADHERING A CARPET BACKING TO A CARPET COMPRISING
Claim 2
Dependent Claim
12 words
A BACKING AGENT FOR ADHERING A CARPET BACKING TO A CARPET COMPRISING
Claim 3
Dependent Claim
61 words
A MIXTURE OF ABOUT 90 TO 20 PERCENT BY WEIGHT OF ATACTIC POLYPROPYLENE HAVING A MOLECULAR WEIGHT OF 1,000 TO 100,000 AND ABOUT 10 TO 80 PERCENT BY WEIGHT OF A URETHANE PREPOLYMER HAVING A MOLECULAR WEIGHT OF 1,000 TO 10,000, AN AMINE EQUIVALENT OF ABOUT 1,1000 TO 1,2000 AND HAVING AN ISOCYANATE GROUP AT THE TERMINALS OF THE MOLECULE, AND
Claim 4
Dependent Claim
61 words
A MIXTURE OF ABOUT 90 TO 20 PERCENT BY WEIGHT OF ATACTIC POLYPROPYLENE HAVING A MOLECULAR WEIGHT OF 1,000 TO 100,000 AND ABOUT 10 TO 80 PERCENT BY WEIGHT OF A URETHANE PREPOLYMER HAVING A MOLECULAR WEIGHT OF 1,000 TO 10,000, AN AMINE EQUIVALENT OF ABOUT 1,1000 TO 1,2000 AND HAVING AN ISOCYANATE GROUP AT THE TERMINALS OF THE MOLECULE, AND
Claim 5
Dependent Claim
68 words
ABOUT 5 TO 60 PERCENT BY WEIGHT OF A NON-POROUS INORGANIC FILLER BASED ON THE TOTAL WEIGHT OF SAID MIXTURE AND SAID INORGANIC FILLER, SAID BACKING AGENT HAVING A VISCOSITY WHEN APPLIED OF 3,000 TO 10,000 CPS AND SAID URETHANE PREPOLYMER BEING AN ADDITION POLYMERIZATION PRODUCT BETWEEN AT LEAST ONE DIISOCYANTE COMPOUND HAVING AN ISOCYANATE GROUP AT THE TERMINALS OF THE MOLECULE AND AT LEAST ONE DIOL COMPOUND.
Claim 6
Dependent Claim
68 words
ABOUT 5 TO 60 PERCENT BY WEIGHT OF A NON-POROUS INORGANIC FILLER BASED ON THE TOTAL WEIGHT OF SAID MIXTURE AND SAID INORGANIC FILLER, SAID BACKING AGENT HAVING A VISCOSITY WHEN APPLIED OF 3,000 TO 10,000 CPS AND SAID URETHANE PREPOLYMER BEING AN ADDITION POLYMERIZATION PRODUCT BETWEEN AT LEAST ONE DIISOCYANTE COMPOUND HAVING AN ISOCYANATE GROUP AT THE TERMINALS OF THE MOLECULE AND AT LEAST ONE DIOL COMPOUND.
Claim 7
Dependent Claim
68 words
about 5 to 60 percent by weight of a non-porous inorganic filler based on the total weight of said mixture and said inorganic filler, said backing agent having a viscosity when applied of 3,000 to 10,000 cps and said urethane prepolymer being an addition polymerization product between at least one diisocyanate compound having an isocyanate group at the terminals of the molecule and at least one diol compound.
Claim 8
Dependent Claim
68 words
about 5 to 60 percent by weight of a non-porous inorganic filler based on the total weight of said mixture and said inorganic filler, said backing agent having a viscosity when applied of 3,000 to 10,000 cps and said urethane prepolymer being an addition polymerization product between at least one diisocyanate compound having an isocyanate group at the terminals of the molecule and at least one diol compound.
Claim 9
Dependent Claim
36 words
The backing agent of claim 1, wherein said atactic polypropylene has a specific gravity of about 0.8 to 0.9, a molecular weight of about 2,000 to 100,000 and a softening point of about 90* to 150*C.
Claim 10
Dependent Claim
21 words
The backing agent of claim 1, wherein said urethane prepolymer has a viscosity of about 300,000 to 2,500,000 centipoises at 25*C.
Claim 11
Dependent Claim
32 words
The backing agent of claim 1, wherein said diisocyanate compound is selected from the group consisting of 1,5-naphthylenediisocyanate, 3,3''-dimethyldiphenyl-4,4''-diisocyanate, 4,4''-diphenylmethane-diisocyanate, 3,3''-dimethyldiphenylmethane-4,4''-diisocyanate, polymethylenepolyphenyl-isocyanate, 1,3-dimethylbenzol-4,6-diisocyanate, 1,4-naphthylene-diisocyanate, 3, 3''-dimethoxybiphenyl-4,4''-diisocyanate, 2-nitrobiphenyl-4,4''-diisocyanate, 2,2''-dimethyldiphenylmethane-4,4''-diisocyanate, and a mixture thereof.
Claim 12
Dependent Claim
18 words
The backing agent of claim 1, wherein said inorganic filler is calcium carbonate, aluminum hydroxide, clay or talc.
Claim 13
Dependent Claim
21 words
The backing agent of claim 5, wherein said inorganic filler has an average particle size of about 0.1 to 30 microns.
References Cited (Backward Citations)
US3312755A
Cited
US3310604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |