US4625012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture curable polyurethane polymers
Assignee: DIAMOND TECHNOLOGY PARTNERSHIP Co
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Filing: 1985-08-26
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Granted: 1986-11-25
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Expires: 2005-08-26
Abstract
Abstract Methods for making a moisture curable polyurethane polymer having terminal isocyanate groups and pendant alkoxysilane groups by reacting an isocyanatosilane adduct, having terminal isocyanate groups and at least one hydrolyzable alkoxy group bonded to silicon, with a polyisocyanate and a polyol; moisture curable polymers made by said methods; sealant compositions directly adherent to a non-porous substrate such as glass or metal without the use of a primer, said compositions comprising such a moisture curable polymer in combination with a filler; and methods for curing and using such sealant compositions.
Inventors
- 👤 Sidky D. Rizk
- 👤 Harry W. S. Hsieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C09; C09J; C09J175/00; C09J175/04; C08G18/08; C08G18/10; C08G18/8061; C08G18/8083; C08G18/809; C08G2190/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
79 words
A method for making a moisture curable polyurethane polymer having terminal isocyanate groups and pendant silane groups having at least one hydrolyzable alkoxy group bonded to silicon, which method comprises reacting (1) an isocyanatosilane adduct having at least two isocyanato groups and (2) an isocyanate different from (1) and having at least two isocyanato groups with (3) a polyol, said isocyanatosilane adduct being the reaction product of an isocyanate having at least three isocyanato groups with an organofunctional alkoxysilane.
Claim 2
Independent Claim
79 words
A method for making a moisture curable polyurethane polymer having terminal isocyanate groups and pendant silane groups having at least one hydrolyzable alkoxy group bonded to silicon, which method comprises reacting (1) an isocyanatosilane adduct having at least two isocyanato groups and (2) an isocyanate different from (1) and having at least two isocyanato groups with (3) a polyol, said isocyanatosilane adduct being the reaction product of an isocyanate having at least three isocyanato groups with an organofunctional alkoxysilane.
Claim 3
Dependent Claim
49 words
A method as in claim 1 wherein the number of said pendant silane groups is from 2 to 50 equivalent percent of the total number of isocyanato groups theoretically available in said isocyanate having at least three isocyanato groups and said isocyanate (2) having at least two isocyanato groups.
Claim 4
Independent Claim
124 words
A method for making a moisture curable polyurethane polymer having terminal isocyanate groups and pendant silane groups having at least one hydrolyzable alkoxy group bonded to silicon, which method comprises reacting (1) an isocyanatosilane adduct having at least two isocyanato groups and (2) an isocyanate different from (1) and having at least two isocyanato groups with (3) a polyether polyol, said isocyanato adduct being the reaction product of an isocyanate having at least three isocyanato groups with an organofunctional mercaptoalkoxysilane or aminoalkoxysilane, the number of said pendant silane groups being from 2 to 50 equivalent percent of the total number of isocyanato groups theoretically available in said isocyanate having at least three isocyanato groups and said isocyanate (2) having at least two isocyanato groups.
Claim 5
Independent Claim
124 words
A method for making a moisture curable polyurethane polymer having terminal isocyanate groups and pendant silane groups having at least one hydrolyzable alkoxy group bonded to silicon, which method comprises reacting (1) an isocyanatosilane adduct having at least two isocyanato groups and (2) an isocyanate different from (1) and having at least two isocyanato groups with (3) a polyether polyol, said isocyanato adduct being the reaction product of an isocyanate having at least three isocyanato groups with an organofunctional mercaptoalkoxysilane or aminoalkoxysilane, the number of said pendant silane groups being from 2 to 50 equivalent percent of the total number of isocyanato groups theoretically available in said isocyanate having at least three isocyanato groups and said isocyanate (2) having at least two isocyanato groups.
Claim 6
Dependent Claim
12 words
A moisture curable polyurethane polymer made by the method of claim 2.
Claim 7
Dependent Claim
12 words
A moisture curable polyurethane polymer made by the method of claim 3.
Claim 8
Dependent Claim
32 words
A method as in claim 3 wherein said isocyanate having at least three isocyanate groups is an aliphatic triisocyanate made by reacting three moles of hexamethylene diisocyanate with one mole of water.
Claim 9
Dependent Claim
12 words
A moisture curable polyurethane polymer made by the method of claim 6.
Claim 10
Dependent Claim
14 words
A method as in claim 6 wherein said polyether polyol is a polyoxyalkylene polyol.
Claim 11
Dependent Claim
12 words
A moisture curable polyurethane polymer made by the method of claim 8.
Claim 12
Dependent Claim
60 words
A method as in claim 1 wherein said organofunctional silane is a mercaptoalkoxysilane of the formula HS--R--Si(X).sub.m (R').sub.(3-m) or an aminoalkoxysilane of the formula H.sub.(3-n) N--[R--Si(X).sub.m (R').sub.(3-m) ].sub.n, where R is a divalent organic group, R' is hydrogen or alkyl, X is an hydrolyzable alkoxy group, m is any integer from 1 to 3, and n is 1 or 2.
Claim 13
Dependent Claim
12 words
A method as in claim 10 wherein said organofunctional silane is N,N-bis[(3-trimethoxysilyl)propyl]amine.
Claim 14
Dependent Claim
14 words
A method as in claim 10 wherein said organofunctional silane is gamma-mercaptopropyl trimethoxy silane.
Claim 15
Dependent Claim
13 words
A method as in claim 1 wherein said polyol is a polyether polyol.
Claim 16
Dependent Claim
21 words
A method as in claim 1 wherein said polyether polyol is a mixture of a polyether diol and a polyether triol.
Claim 17
Dependent Claim
22 words
A method as in claim 14 wherein said polyether diol is a polyoxyalkylene diol and said polyether triol is a polyoxyalkylene triol.
Claim 18
Dependent Claim
12 words
A moisture curable polyurethane polymer made by the method of claim 1.
Claim 19
Dependent Claim
19 words
A moisture curable sealant composition comprising a polymer as in claim 16 in combination with at least one filler.
Claim 20
Dependent Claim
40 words
The method of accelerating the moisture cure of a sealant composition as in claim 17 which comprises mixing said sealant composition with a paste containing filler and sufficient water to react with isocyanate and alkoxysilane groups present in said composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |