US4720398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the improvement of the adhesion to rubber or a thermoplastic elastomer of synthetic yarns, cords or fabrics made therefrom
Assignee: Akzo NV
•
Filing: 1985-03-14
•
Granted: 1988-01-19
•
Expires: 2005-03-14
Abstract
Abstract A process for the improvement of the adhesion to rubber or a thermoplastic elastomer of synthetic yarns, cords or fabrics made therefrom by applying thereto an adhesive consisting of an aqueous solution or dispersion of a polyurethane with ionic groups, capped isocyanate groups and groups with a Zerewitinoff-active H atom, followed by drying the product thus treated. The polyurethane corresponds to the structure: <IMAGE> +TR <IMAGE> wherein X has the meaning of an O or S atom or of an O-, S-, N- or P-containing group with a Zerewitinoff-active H atom or to which prior to reaction with an isocyanate group a Zerewitinoff-active H atom had been attached, R1 represents the remainder of a capping agent, R2 represents an at least divalent organic group which remains after removal of isocyanate groups from a polyisocyanate, R3 represents an at least divalent organic group which remains after removal of -XH groups from an organic compound having a molecular weight of 62 to 2000, R4 represents an ionic group or a potentially ionic group which remains after removal of -XH group(s), m is a number>/=1 and</=4, n is a number>/=1 and</=4, p is a number>/=1 and</=3, q is a number>/=1 and</=3, and r is a number>/=0 and</=3. The present process is especially suitable for the treatment of aromatic polyamide yarns, cords or fabrics to be incorporated into automobile tires or V-belts.
Inventors
- 👤 Hendricus A. A. van Aalten
- 👤 Freerk R. van Calker
- 👤 Willem E. Weening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:04
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/20; Y10T442/2738
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
224 words
A process for the improvement of the adhesion to rubber or a thermoplastic elastomer of synthetic yarns, cords or fabrics by applying to said synthetic yarns, cords or fabrics an adhesive consisting of an aqueous solution or dispersion of a polyurethane with ionic groups, capped isocyanate groups and groups with a Zerewitinoff-active H atom, followed by drying the product thus treated, characterized in that the polyurethane corresponds to the following structure: ##STR4## wherein X has the meaning of an O or S atom or of an O-, S-, N- or P-containing group with a Zerewitinoff-active H atom or to which prior to reaction with an isocyanate group a Zerewitinoff-active H atom had been attached, R 1 represents the remainder of a capping agent, R 2 represents an at least divalent organic group which remains after removal of isocyanate groups from a polyisocyanate, R 3 represents an at least divalent organic group which remains after removal of --XH groups from an organic compound having a molecular weight of 62 to 2000, R 4 represents an ionic group or a potentially ionic group which remains after removal of --XH group(s), m is a number ≧1 and ≦4, n is a number ≧1 and ≦4, p is a number ≧1 and ≦3, q is a number ≧1 and ≦3, and r is a number ≧0 and ≦3.
Claim 2
Dependent Claim
224 words
A process for the improvement of the adhesion to rubber or a thermoplastic elastomer of synthetic yarns, cords or fabrics by applying to said synthetic yarns, cords or fabrics an adhesive consisting of an aqueous solution or dispersion of a polyurethane with ionic groups, capped isocyanate groups and groups with a Zerewitinoff-active H atom, followed by drying the product thus treated, characterized in that the polyurethane corresponds to the following structure: ##STR4## wherein X has the meaning of an O or S atom or of an O-, S-, N- or P-containing group with a Zerewitinoff-active H atom or to which prior to reaction with an isocyanate group a Zerewitinoff-active H atom had been attached, R 1 represents the remainder of a capping agent, R 2 represents an at least divalent organic group which remains after removal of isocyanate groups from a polyisocyanate, R 3 represents an at least divalent organic group which remains after removal of --XH groups from an organic compound having a molecular weight of 62 to 2000, R 4 represents an ionic group or a potentially ionic group which remains after removal of --XH group(s), m is a number ≧1 and ≦4, n is a number ≧1 and ≦4, p is a number ≧1 and ≦3, q is a number ≧1 and ≦3, and r is a number ≧0 and ≦3.
Claim 3
Dependent Claim
17 words
A process according to claim 1, characterized in that the ionic group is a quaternary ammonium group.
Claim 4
Dependent Claim
51 words
A process according to claim 1, wherein R 3 is derived from a compound of the formula R 3 (OH) m+n , which represents a polyester having a molecular weight in the range of 300 to 1000 and an average number of hydroxyl groups in the range of 2 to 4.
Claim 5
Dependent Claim
51 words
The process according to claim 2, wherein R 3 is derived from a compound of the formula R 3 (OH) m+n , which represents a polyester having a molecular weight in the range of 300 to 1000 and an average number of hydroxyl groups in the range of 2 to 4.
Claim 6
Dependent Claim
20 words
The process according to claim 1, wherein R 4 is derived from a compound of the formula HOR 4 OH.
Claim 7
Dependent Claim
20 words
The process according to claim 2, wherein R 4 is derived from a compound of the formula HOR 4 OH.
Claim 8
Dependent Claim
20 words
The process according to claim 3, wherein R 4 is derived from a compound of the formula HOR 4 OH.
Claim 9
Dependent Claim
20 words
The process according to claim 4, wherein R 4 is derived from a compound of the formula HOR 4 OH.
Claim 10
Dependent Claim
25 words
The process according to claims 5, 6, 7 or 8, wherein the compound of HOR 4 OH is N-methyl diethanol amine or 1,2-propane diol-3-dimethyl amine.
Claim 11
Dependent Claim
31 words
The process according to claim 1, wherein the polyisocyanate is selected from the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, diphenyl methane-4,4'-diisocyanate, and a mixture of 2,4 and 2,6 toluene diisocyanate.
Claim 12
Dependent Claim
21 words
The process according to claim 1, wherein the capping agent is selected from the group consisting of ε--caprolactam and methylethyl ketoxime.
Claim 13
Dependent Claim
17 words
The process according to claim 1, wherein the dispersion contains 1 to 40% by weight of polyurethane.
Claim 14
Dependent Claim
17 words
The process according to claim 2, wherein the dispersion contains 1 to 40% by weight of polyurethane.
Claim 15
Dependent Claim
17 words
The process according to claim 3, wherein the dispersion contains 1 to 40% by weight of polyurethane.
Claim 16
Dependent Claim
17 words
The process according to claim 4, wherein the dispersion contains 1 to 40% by weight of polyurethane.
References Cited (Backward Citations)
FR1520505A
Cited
US3617352A
Cited
FR2092066A1
Cited
US3773729A
Cited
US4036801A
Cited
US3997592A
Cited
US4163094A
Cited
FR2426718A1
Cited
US4239878A
Cited
DE3234590A1
Cited
US4433017A
Cited
EP0083232A1
Cited
EP0084453A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |