GB587303A - Improvements in or relating to compositions containing primary aromatic amine-aldehyde resins - Google Patents
Improvements in or relating to compositions containing primary aromatic amine-aldehyde resinsInfo
- Publication number
- GB587303A GB587303A GB24063/44A GB2406344A GB587303A GB 587303 A GB587303 A GB 587303A GB 24063/44 A GB24063/44 A GB 24063/44A GB 2406344 A GB2406344 A GB 2406344A GB 587303 A GB587303 A GB 587303A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlorethyl
- aromatic amine
- wetting
- mix
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
- B24D3/285—Reaction products obtained from aldehydes or ketones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A heat-hardened resin composition is made by mixing a primary p aromatic amine-aldehyde resin with a wetting and plasticising compound having the formula <FORM:0587303/IV/1> where R is hydrogen or an aryl, alky or aralkyl group containing 7 carbon atoms or less, or is a heterocyclic carbon radical containing 4 carbon atoms, namely di-2-chlorethyl formal, di - 2 - chlorethyl benzal, di - 2 - chlorethyl enanthal, di-2-chlorethyl propanal, di-2-chlorethyl furfural or di-2-chlorethyl butyral, shaping and heat-treating the shaped mix. A filler such as abrasive grains, for example emery, corundum, dense "regular" fused alumina, porous white fused alumina, silicon carbide and other hard carbides, quartz, glass, garnet or diamonds may be included in the dry mix. The primary aromatic amine, such as aniline, ortho, meta- or para-toluidine or diamino diphenyl methane is reacted with excess of formaldehyde, e.g. 20 per cent above the stoichiometric proportions, or some of the formaldehyde is added after the initial condensation as paraformaldehyde or hexamethylene tetramine, to yield a thermoplastic resin. An organic compound containing chlorine, bromine or iodine and capable of splitting off hydrogen halide at elevated temperatures, such as polyvinyl chloride, polyvinylidene dichloride, rubber hydrochloride, chlorinated rubber, chlorinated polyisobutylene, halogen substituted paraffins and aliphatic chlorhydrins containing less than six carbon atoms, may be added to the mix as additional cross-linking agents. Abrasive wheels are made by wetting abrasive grains in a mixing pan with the wetting liquid, adding powdered fusible resin, mixing, charging the "dry granular mix" into moulds and curing the "green" wheel produced in an oven. In the examples, grinding wheels are made employing di-2-chlorethyl formal as the wetting and cross-linking agent for the primary aromatic amine-formaldehyde resins halogenated cross-linking agents are employed. Specifications 538,406, 561,902 and 563,344 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US587303XA | 1944-04-01 | 1944-04-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB587303A true GB587303A (en) | 1947-04-21 |
Family
ID=22018577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24063/44A Expired GB587303A (en) | 1944-04-01 | 1944-12-01 | Improvements in or relating to compositions containing primary aromatic amine-aldehyde resins |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB587303A (en) |
-
1944
- 1944-12-01 GB GB24063/44A patent/GB587303A/en not_active Expired
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