NOVOLAC-TYPE COCONDENSATION PRODUCT TO BE COMPOUNDED INTO RUBBER, AND METHOD FOR PRODUCING SAID COCONDENSATION PRODUCT

WIPO Patent Application WO/2018/020967

A1

Provided is a method for producing a novolac-type cocondensation product, wherein the novolac-type cocondensation product contains a structural unit derived from at least one phenol compound represented by general formula (i), a structural unit derived from formaldehyde and a structural unit derived from resorcin, and a structural unit derived from p-tert-butylphenol makes up 65 mol% or more of the structural unit derived from the phenol compound. The production method involves, in this order, the steps of (1) reacting the phenol compound with formaldehyde at 75ºC or higher in the presence of a base in an amount of 0.05 mole or more relative to 1 mole of the phenol compound to produce a resol-type condensation product having a number average molecular weight of 600 or more as measured by a GPC method, (2) mixing a reaction solution containing the resol-type condensation product produced in step (1) with an acid in an equivalent amount to the amount of the base used in step (1) or more, and (3) reacting the resol-type condensation product with resorcin in an amount of 0.5 to 1.2 moles relative to 1 mole of the phenol compound.

OZAKI FUMIYA (JP)
SATO NOBUYUKI (JP)

PCT/JP2017/024518

February 01, 2018

July 04, 2017

Click for automatic bibliography generation  

TAOKA CHEMICAL CO LTD (JP)

C08G8/00; C08G8/24; C08K5/09; C08K5/13; C08L21/00; C08L61/06

JPS5198792A	1976-08-31
JPS6260289A	1987-03-16
JP2014152220A	2014-08-25
JP2016014110A	2016-01-28
JPS62212411A	1987-09-18
JP2014080502A	2014-05-08
JP2015052097A	2015-03-19

FUKAMI PATENT OFFICE, P.C. (JP)

View/Download PDF      PDF Help

Previous Patent: ELECTRONIC-VIEWFINDER ADAPTER, CAMERA, AND ELECTRONIC VIEWFINDER

Next Patent: WRITING IMPLEMENT CASE