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 resins

Info

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
Application number
GB24063/44A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norton Grinding Wheel Co Ltd
Original Assignee
Norton Grinding Wheel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Norton Grinding Wheel Co Ltd filed Critical Norton Grinding Wheel Co Ltd
Publication of GB587303A publication Critical patent/GB587303A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02Physical 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
    • B24D3/20Physical 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
    • B24D3/28Resins or natural or synthetic macromolecular compounds
    • B24D3/285Reaction products obtained from aldehydes or ketones
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/06Ethers; 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.
GB24063/44A 1944-04-01 1944-12-01 Improvements in or relating to compositions containing primary aromatic amine-aldehyde resins Expired GB587303A (en)

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)

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