Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1984-07-27
1985-09-03
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521133, 521181, C08J 914
Patent
active
045393389
ABSTRACT:
The present invention is directed to aqueous phenol formaldehyde resoles that have particular application in manufacturing phenolic foam insulation. The resoles are essentially phenol formaldehyde condensation polymers having molar ratios of formaldehyde to phenol of from about 1.7:1 to 2.3:1, preferably from 1.75:1 to 2.25:1 and most preferably about 2:1. The resoles have a weight average molecular weight greater than 800 and preferably from 950-1500. The resoles also have a number average molecular weight greater than 350 and preferably from about 400 to about 600 and a dispersivity greater than about 1.7, preferably from 1.8 to 2.6. Phenol formaldehyde resoles having these characteristics are processable into phenolic foams having a low k value and having other physical characteristics which make the phenolic foam especially useful as an insulation material. The present invention is also directed to foamable phenolic resole compositions prepared from the phenolic resoles and phenolic foams prepared from the compositions.
REFERENCES:
patent: 2446429 (1948-08-01), Nelson et al.
patent: 2653139 (1953-09-01), Sterling
patent: 2728741 (1955-12-01), Simon
patent: 2933461 (1960-04-01), Mullen
patent: 2979469 (1961-04-01), Shannon et al.
patent: 3271331 (1966-09-01), Ender
patent: 3298973 (1967-01-01), Quarles et al.
patent: 3336243 (1967-08-01), Garrett
patent: 3389094 (1968-06-01), D'Alessandro
patent: 3389095 (1968-06-01), Garrett
patent: 3484391 (1969-12-01), Wheatley et al.
patent: 3639303 (1968-06-01), Penfold
patent: 3640911 (1972-02-01), Papa et al.
patent: 3673130 (1972-06-01), Papa et al.
patent: 3692706 (1972-09-01), Graham et al.
patent: 3694387 (1972-09-01), Junger et al.
patent: 3726708 (1973-04-01), Weissenfels et al.
patent: 3740358 (1973-06-01), Christie et al.
patent: 3741920 (1973-06-01), Weissenfels et al.
patent: 3821337 (1974-06-01), Bunclark et al.
patent: 3830894 (1974-08-01), Juenger et al.
patent: 3835208 (1974-09-01), Koutitonsky
patent: 3842020 (1974-10-01), Garrett
patent: 3862912 (1975-01-01), Berndt et al.
patent: 3870661 (1975-03-01), Crook et al.
patent: 3872033 (1975-03-01), Boden et al.
patent: 3876620 (1975-04-01), Moss
patent: 3877967 (1975-04-01), Junger et al.
patent: 3885010 (1975-05-01), Bruning et al.
patent: 3907723 (1975-09-01), Pretot
patent: 3915772 (1975-10-01), Weissenfels et al.
patent: 3953645 (1976-04-01), Moss
patent: 3968300 (1976-07-01), Moss et al.
patent: 3998765 (1976-12-01), Novak et al.
patent: 3999230 (1976-12-01), Bruning et al.
patent: 4001148 (1977-01-01), Simic et al.
patent: 4018725 (1977-04-01), Hadley
patent: 4033909 (1977-07-01), Papa
patent: 4033910 (1977-07-01), Papa
patent: 4036793 (1977-07-01), Moss
patent: 4042314 (1977-08-01), Bruning et al.
patent: 4048145 (1977-09-01), Moss
patent: 4067829 (1978-01-01), Garrett
patent: 4070313 (1978-01-01), Papa
patent: 4102832 (1978-07-01), Weissenfels et al.
patent: 4107107 (1978-08-01), Mendelsohn et al.
patent: 4111911 (1978-09-01), Weissenfels et al.
patent: 4119584 (1978-10-01), Papa et al.
patent: 4122045 (1978-10-01), Garrett et al.
patent: 4133931 (1979-01-01), Beale et al.
patent: 4140842 (1979-02-01), Beale et al.
patent: 4165413 (1979-08-01), Sefton et al.
patent: 4166162 (1979-08-01), Weissenfels et al.
patent: 4176106 (1979-11-01), Reid et al.
patent: 4176216 (1979-11-01), Reid et al.
patent: 4202945 (1980-05-01), Leinhardt
patent: 4204020 (1980-05-01), Beale et al.
patent: 4205135 (1980-05-01), Beale et al.
patent: 4207400 (1980-06-01), Dahms
patent: 4207401 (1980-06-01), Dahms
patent: 4216295 (1980-08-01), Dahms
patent: 4219623 (1980-08-01), Sudan et al.
patent: 4225679 (1980-09-01), Pilato
patent: 4252908 (1981-02-01), Paladini
patent: 4272403 (1981-06-01), Meyer et al.
patent: 4303758 (1981-12-01), Gussmer
patent: 4323667 (1982-04-01), Meyer et al.
patent: 4332754 (1982-06-01), Meunier et al.
Carlson John D.
Colton James P.
Kifer Edward W.
Wojtyna Vincent J.
Foelak Morton
Koppers Company Inc.
Zeh, Jr. Herbert J.
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