<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31436377</termId><termName>soluble nylon</termName><termType>PT</termType><termNote><![CDATA[ Modified nylon developed by DuPont in the 1940's; formerly used in conservation as an adhesive and sizing agent for fragile paper, and as a consolidant for stone and friable pigments. Its use was discontinued following the discovery that over time it becomes insoluble and opaque, and is unsafe to remove. ]]></termNote><termCreatedDate>2026-03-30 20:57:40</termCreatedDate><relation><relationType>UF</relationType><termId>31436378</termId><termName>nylon, soluble</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31409823</termId><termName>nylon</termName><termType>PT</termType></relation></term>  </Zthes>