 Optical component having waveguides extending from a common region |
| The invention relates to an optical component. The optical component includes waveguides extending ... |
|
| Waste water purification |
| We claim: 1. An improved process for the purification of waste water comprising: feeding the waste ... |
|
| Wastewater treatment process |
| Wastewater is treated to remove pollutional factors such as biochemical oxygen demand (BOD), ... |
|
| Anaerobic filter |
| The embodiments of the invention in which an exclusive property or privilege is claimed are defined ... |
|
| Process and system for treating waste water |
| It is a primary object of this invention to provide an improved process and system for the ... |
|
| Compact electrocatalytic sewage treatment unit for maritime use |
| It is a primary object of this invention to provide a compact, relatively small low-weight unit for ... |
|
| Apparatus for separating mixtures of liquids of different specific gravities, etc. |
| What I claim is: 1. Shipboard apparatus for separating a mixture of immiscible liquids having ... |
|
|
Phenolic polymer prepared from o-cresol
| Details |
Inventors: Moss, Ernest K.;
Assignee: The Celotex Corporation (Tampa, FL)
Primary Examiner: Schain; Howard E.
Assistant Examiner:
Attorney, Agent or Firm: Grace; James W., Murphy; David R.
Phenolic polymers which can be produced by reacting ortho-cresol with other phenolic materials, such as phenol, are described. Phenolic compositions comprising these phenolic polymers mixed with other phenolic materials, cellular materials produced from these phenolic polymers having low friability, and related processes and products are also described. |
|
DETAILED DESCRIPTION What is claimed is: 1.
An alkylol group containing phenolic polymer of Formula I: ##STR11## wherein: a.
R.
sup.
1 is ##STR12## hydrogen or a radical of Formula II: ##STR13## b.
the R.
sup.
2 's are independently selected from the group consisting of lower alkyl, phenyl, benzyl, halo, nitro and hydrogen, c.
The R.
sup.
3 's are independently selected from the group consisting of ##STR14## hydrogen or a radical of Formula II, wherein at least one of the R.
sup.
3 's is alkylol, p1 d.
the R.
sup.
4 's are independently selected from the group consisting of lower alkyl, hydrogen, phenyl, benzyl, or furyl, e.
m is an integer from 2 to 10 inclusive, f.
the phenolic polymer has a molecular weight between 200 and 2000.
2.
The phenolic polymer of claim 1 wherein R.
sup.
2 is hydrogen.
3.
The phenolic polymer of claim 1 wherein R.
sup.
4 is hydrogen.
4.
A methylol group containing phenolic polymer of claim 1 of Formula III: ##STR15## wherein: a.
R.
sup.
1 is HOCH.
sub.
2 --, hydrogen, or a radical of Formula IV: ##STR16## b.
the R.
sup.
3 's are independently selected from the group consisting of HOCH.
sub.
2 --, hydrogen, or a radical or Formula IV, wherein at least one of the R.
sup.
3 's is methylol, c.
m is an integer from 2 to 10 inclusive, d.
the phenolic polymer has a molecular weight between 200 and 2000.
5.
A methylol group containing phenolic polymer of Claim 1 of Formula III: ##STR17## wherein: a.
R.
sup.
1 is HOCH.
sub.
2 --, hydrogen or a radical of Formula IV: ##STR18## b.
the R.
sup.
3 's are independently selected from the group consisting of HOCH.
sub.
2 --, hydrogen or a radical of Formula IV, with the proviso that at least on R.
sup.
3 is HOCH.
sub.
2 --, c.
m is an integer from 3 to 6 inclusive, d.
the phenolic polymer has a molecular weight between 300 and 1500, e.
the ratio of radicals of Formula IV to o-cresol units is 1:1.
5 to 1.
5:1.
6.
A composition of matter comprising: A.
an alkylol group containing phenolic polymer of claim 1 of Formula I: ##STR19## wherein: a.
R.
sup.
1 is ##STR20## hydrogen, or a radical of Formula II: ##STR21## b
|
|
Liquid Purification 
