公开(公告)号：DE1208884B

公开(公告)日：1966-01-13

申请号：DEF0037897

申请日：1962-09-27

Applicant: HOECHST AG

Inventor： HEUCK DR CLAUS ,  ROOS DR GUENTHER

IPC: C07C37/14 ,  C08K5/13

Abstract: Polyacetals are stabilized by the addition of 0.1 to 5% based on the polyacetal, of at least one addition product of 1 or 2 mols of a member selected from the group consisting of styrene and alpha-methyl styrene with 1 mol of an alkyl-substituted phenol. Known stabilizers, e.g. amides, polyamides, urea derivatives, hydrazine derivatives and amidines may also be present, dicyanodiamide being particularly suitable. The polyacetal may be a homopolymer of formaldehyde or trioxane or copolymers thereof with cyclic ethers. The terminal groups may be etherified or esterified. Ortho-, meta- and para-cresol are specified phenols. Solvents such as acetone and chloroform may be present.

公开(公告)号：DE1201063B

公开(公告)日：1965-09-16

申请号：DEF0028030

申请日：1959-03-25

Applicant: HOECHST AG

Inventor： KREUTER DR HERBERT ,  HEUCK DR CLAUS ,  SOMMER DR SIEGFRIED ,  WAGENER SIEGFRIED

IPC: C08F6/02

公开(公告)号：DE1096599B

公开(公告)日：1961-01-05

申请号：DEF0025984

申请日：1958-06-19

Applicant: HOECHST AG

Inventor： HEUCK DR CLAUS ,  MAUZ DR OTTO ,  ROCHLITZ DR FRITZ ,  WINTER DR JAKOB ,  HELD DR RUDOLF ,  SCHUELDE DR FELIX

IPC: C08K5/46

公开(公告)号：DE1265409B

公开(公告)日：1968-04-04

申请号：DEF0028654

申请日：1959-06-10

Applicant: HOECHST AG

Inventor： HEUCK DR CLAUS ,  MAUZ DR OTTO ,  WINTER DR JAKOB ,  SCHUELDE DR FELIX

IPC: C08K5/372 ,  C08L23/02

公开(公告)号：DE1162083B

公开(公告)日：1964-01-30

申请号：DEF0037622

申请日：1962-08-18

Applicant: HOECHST AG

Inventor： HEUCK DR CLAUS ,  LEDERER DR MICHAEL

IPC: C08F22/04

公开(公告)号：DE1123667B

公开(公告)日：1962-02-15

申请号：DEF0030546

申请日：1960-02-16

Applicant: HOECHST AG

Inventor： HEUCK DR CLAUS ,  VILCSEK DR HERBERT ,  ROCHLITZ DR FRITZ

IPC: C07F9/42 ,  C08F30/02

公开(公告)号：DE1110407B

公开(公告)日：1961-07-06

申请号：DEF0029678

申请日：1959-10-23

Applicant: HOECHST AG

Inventor： LORENTZ DR GUIDO ,  HEUCK DR CLAUS

IPC: C08G59/40 ,  C08G59/56

公开(公告)号：DE1062925B

公开(公告)日：1959-08-06

申请号：DEF0022331

申请日：1957-02-12

Applicant: HOECHST AG

Inventor： STAERK DR ERNST ,  HEUCK DR CLAUS

IPC: C08L23/04

公开(公告)号：DE1170634B

公开(公告)日：1964-05-21

申请号：DEF0038199

申请日：1960-11-11

Applicant: HOECHST AG

Inventor： HEUCK DR CLAUS ,  WINTER DR JAKOB ,  MAUZ DR OTTO

IPC: C08K5/372

公开(公告)号：DE1117868B

公开(公告)日：1961-11-23

申请号：DEF0030353

申请日：1960-01-21

Applicant: HOECHST AG

Inventor： WEISSERMEL DR KLAUS ,  HERMANN DR HANS DIETER ,  HEUCK DR CLAUS ,  KUELLMAR DR CLAUS ,  MAUZ DR OTTO ,  REIHER DR MANFRED ,  WINTER DR JAKOB

IPC: C08K5/372

Abstract: High molecular weight polyoxymethylenes are stabilized by incorporating therein at least one sulphur-containing compound of formulae: R-S-R1 or R-(Sn)R11 or where R represents a substituted or unsubstituted monovalent aliphatic hydrocarbon radical containing 3-25 carbon atoms or a substituted or unsubstituted monovalent cycloaliphatic or aromatic hydrocarbon radical, R1 is hydrogen or a substituted or unsubstituted monovalent aliphatic hydrocarbon radical containing 1-25 carbon atoms or a substituted or unsubstituted monovalent cycloaliphatic or aromatic hydrocarbon radical, R11 is R1 but not hydrogen, R111 is hydrogen or a substituted or unsubstituted monovalent aliphatic radical containing up to 20 carbon atoms, RIV is R111 or a substituted or unsubstituted monovalent aromatic hydrocarbon radical and n is 2, 3 or 4. The amount of stabilizer used is preferably 0.001 to 5% based on the polymer and a mixture of stabilizers dissolved in a solvent may also be used. The polymer to be stabilized may be acetylated. Very long lists of stabilizers include sulphides or polysulphides or mercaptans containing octyl, dodecyl or octadecyl radicals such as thiodipropionic acid didodecyl ester, 2-4-bis(dodecylthio)-1-5-dimethyl benzene, 2-4-naphthalylene-bis-dodecyl-sulphide, dithioglycol disalicylic acid ester, trithioformaldehyde and 2-4-6-tris (2-N-methylanilino -4- ethoxyphenyl)-trithiane.