US4189544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyisocyanurate polymers prepared using carbamate modifier
Assignee: Pharmacia and Upjohn Co
•
Filing: 1979-02-21
•
Granted: 1980-02-19
•
Expires: 1999-02-21
Abstract
Abstract Novel cellular and non-cellular polymers are provided in which the major recurring polymer unit is isocyanurate which polymer comprises the reaction product obtained by bringing together an aromatic polyisocyanate, a trimerization catalyst, and a minor amount of a carbamate modifier. The use of the carbamate modifier allows for the presence of high catalyst levels without shortening the reaction initiation period. At the same time, the resulting cure is very rapid and the extent of cure much deeper than has heretofore been attainable.
Inventors
- 👤 Edward J. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:22
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/02; C08G18/022; Y; Y10; Y10S; Y10S521/00; Y10S521/902; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
114 words
In a polymer in which the major recurring unit is isocyanurate which polymer comprises the reaction product obtained by bringing together an aromatic polyisocyanate, and a trimerization catalyst, the improvement which comprises incorporating into the polymer a minor amount of a carbamate modifier selected from the group consisting of ##STR7## and mixtures thereof; wherein R 1 and R 2 each independently represents hydrocarbyl; R 3 is a polyvalent hydrocarbon radical; R 4 is a polyvalent organic radical; n has an average value from 0 to 10; X represents ##STR8## and Y represents ##STR9## wherein n is defined above, and m 1 and m 2 represent the valencies of R 3 and R 4 respectively.
Claim 2
Dependent Claim
114 words
In a polymer in which the major recurring unit is isocyanurate which polymer comprises the reaction product obtained by bringing together an aromatic polyisocyanate, and a trimerization catalyst, the improvement which comprises incorporating into the polymer a minor amount of a carbamate modifier selected from the group consisting of ##STR7## and mixtures thereof; wherein R 1 and R 2 each independently represents hydrocarbyl; R 3 is a polyvalent hydrocarbon radical; R 4 is a polyvalent organic radical; n has an average value from 0 to 10; X represents ##STR8## and Y represents ##STR9## wherein n is defined above, and m 1 and m 2 represent the valencies of R 3 and R 4 respectively.
Claim 3
Dependent Claim
14 words
The polymer according to claim 1 wherein said carbamate modifier has the formula (I).
Claim 4
Dependent Claim
14 words
The polymer according to claim 1 wherein said carbamate modifier has the formula (II).
Claim 5
Dependent Claim
14 words
The polymer according to claim 1 wherein said carbamate modifier has the formula (III).
Claim 6
Dependent Claim
18 words
A cellular polymer according to claim 1 wherein a blowing agent is employed with the polymer forming ingredients.
Claim 7
Dependent Claim
62 words
In a cellular polymer in which the major recurring unit is isocyanurate which polymer comprises the reaction product obtained by bringing together an aromatic polyisocyanate, a trimerization catalyst, and a blowing agent under foam forming conditions, the improvement which comprises incorporating into the foam forming reaction mixture a minor amount of a carbamate modifier having the formula (II) defined in claim 1.
Claim 8
Dependent Claim
82 words
The cellular polymer according to claim 6 wherein said carbamate modifier is selected from the group consisting of (a) said carbamate modifier (II) wherein n is zero and m 1 is 2, and said carbamate corresponds to the formula R 3 (NHCOOR 1 ) 2 ; and (b) said carbamate modifier (II) wherein n has an average value of from about 0.5 to about 5.0, and both m 1 and m 2 have the value 2; and mixtures of (a) and (b).
Claim 9
Dependent Claim
19 words
The cellular polymer according to claim 6 wherein said polyvalent hydrocarbon radical R 3 is an aromatic divalent radical.
Claim 10
Dependent Claim
113 words
A cellular polymer in which the major recurring unit is isocyanurate which polymer comprises the reaction product obtained by bringing together under foam forming conditions: A. a polymethylene poly(phenyl isocyanate); B. a trimerization catalyst; C. a blowing agent; and D. a minor amount of a carbamate modifier selected from the group consisting of (a) R 3 (NHCOOR 1 ) 2 ; (b) R 1 O--OCNHR 3 NHCOOR 4 O) n OCNHR 3 NHCOOR 1 ; and mixtures of (a) and (b); wherein R 1 is hydrocarbyl; R 3 is a divalent aromatic hydrocarbon radical; R 4 is a divalent polyalkyleneoxyalkylene radical; and n has an average value from about 0.5 to about 5.0.
Claim 11
Dependent Claim
113 words
A cellular polymer in which the major recurring unit is isocyanurate which polymer comprises the reaction product obtained by bringing together under foam forming conditions: A. a polymethylene poly(phenyl isocyanate); B. a trimerization catalyst; C. a blowing agent; and D. a minor amount of a carbamate modifier selected from the group consisting of (a) R 3 (NHCOOR 1 ) 2 ; (b) R 1 O--OCNHR 3 NHCOOR 4 O) n OCNHR 3 NHCOOR 1 ; and mixtures of (a) and (b); wherein R 1 is hydrocarbyl; R 3 is a divalent aromatic hydrocarbon radical; R 4 is a divalent polyalkyleneoxyalkylene radical; and n has an average value from about 0.5 to about 5.0.
Claim 12
Dependent Claim
39 words
A cellular polymer according to claim 9 wherein said carbamate modifier has the formula R 3 (NHCOOR 1 ) 2 wherein R 3 is ##STR10## and R 1 is --CH 2 CH 2 O 7 .5 CH 3 .
Claim 13
Dependent Claim
39 words
A cellular polymer according to claim 9 wherein said carbamate modifier has the formula R 3 (NHCOOR 1 ) 2 wherein R 3 is ##STR11## and R 1 is --CH 2 CH 2 O 7 .5 CH 3 .
Claim 14
Dependent Claim
46 words
A cellular polymer according to claim 9 wherein said carbamate modifier is a mixture of R 3 (NHCOOR 1 ) 2 , and R 1 O--OCNHR 3 NHCOOR 4 O) n OCNHR 3 NHCOOR 1 wherein ##STR12## and n has an average value of about 1.5.
Claim 15
Dependent Claim
13 words
A film or coating composition comprising a polymer in accordance with claim 1.
Claim 16
Dependent Claim
15 words
A molded composition comprising an article molded from a polymer in accordance with claim 1.
References Cited (Backward Citations)
GB822504A
Cited
US3294713A
Cited
GB1179231A
Cited
US3745133A
Cited
US3896158A
Cited
US3925527A
Cited
US4124545A
Cited
US3896052A
Cited
US3899443A
Cited
US3986991A
Cited
US4077920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |