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  大部分(fen)皮(pi)革(ge)表面(mian)粗糙、無光(guang)澤，有些皮(pi)革(ge)耐(nai)(nai)水 性(xing)(xing)(xing)(xing)(xing)(xing)、耐(nai)(nai)碰撞性(xing)(xing)(xing)(xing)(xing)(xing)、耐(nai)(nai)老化(hua)(hua)(hua)(hua)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)不好，另外象天(tian)然(ran)皮(pi)革(ge)還會有傷(shang)疤(ba)，皮(pi)革(ge)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)就能(neng)(neng)彌補上(shang)(shang)述皮(pi)革(ge)存(cun)在(zai)(zai)的(de)缺(que) 陷(xian)。 皮(pi)革(ge)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)已有幾十年的(de)歷史，早(zao)(zao)期使用(yong)(yong)的(de)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi) 劑是(shi)天(tian)然(ran)高(gao)分(fen)子化(hua)(hua)(hua)(hua)合物(wu)乳酪(lao)素(su)。隨著(zhu)高(gao)分(fen)子化(hua)(hua)(hua)(hua)學的(de) 問世和(he)(he)發(fa)展(zhan)，涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑開始向(xiang)樹脂(zhi)(zhi)(zhi)化(hua)(hua)(hua)(hua)、水性(xing)(xing)(xing)(xing)(xing)(xing)化(hua)(hua)(hua)(hua)的(de)方(fang)向(xiang) 發(fa)展(zhan)。硝化(hua)(hua)(hua)(hua)纖維素(su)是(shi)至除出現的(de)人造樹脂(zhi)(zhi)(zhi)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi) 劑，隨后(hou)出現了(le)(le)聚(ju)丙烯(xi)(xi)酸酯和(he)(he)聚(ju)氨酯涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑。在(zai)(zai)工 業(ye)發(fa)達國，涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑的(de)合成樹脂(zhi)(zhi)(zhi)化(hua)(hua)(hua)(hua)早(zao)(zao)已達到 90％以(yi)上(shang)(shang)，水性(xing)(xing)(xing)(xing)(xing)(xing)化(hua)(hua)(hua)(hua)的(de)比重也(ye)正不斷(duan)提高(gao)，由(you)于這些 別具(ju)特性(xing)(xing)(xing)(xing)(xing)(xing)的(de)成膜(mo)物(wu)質(zhi)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)優(you)異和(he)(he)豐富(fu)多彩的(de)著(zhu)色(se)材 料，使涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑的(de)生產進入了(le)(le)一(yi)個嶄新的(de)時代。 丙烯(xi)(xi)酸樹脂(zhi)(zhi)(zhi)皮(pi)革(ge)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑是(shi)為彌補乳酪(lao)素(su)在(zai)(zai)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng) 上(shang)(shang)存(cun)在(zai)(zai)著(zhu)薄膜(mo)脆、延伸性(xing)(xing)(xing)(xing)(xing)(xing)小、曲撓(nao)性(xing)(xing)(xing)(xing)(xing)(xing)差、彈性(xing)(xing)(xing)(xing)(xing)(xing)和(he)(he)抗 水性(xing)(xing)(xing)(xing)(xing)(xing)不足等缺(que)陷(xian)而發(fa)展(zhan)起來(lai)的(de)。用(yong)(yong)于皮(pi)革(ge)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑的(de) 丙烯(xi)(xi)酸樹脂(zhi)(zhi)(zhi)主要是(shi)乳液，所以(yi)一(yi)般(ban)采(cai)用(yong)(yong)乳液聚(ju)合的(de) 方(fang)法(fa)。這種皮(pi)革(ge)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑具(ju)有結膜(mo)平(ping)整、光(guang)潔(jie)透明、 伸長和(he)(he)曲撓(nao)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)良(liang)(liang)好、耐(nai)(nai)光(guang)和(he)(he)耐(nai)(nai)老化(hua)(hua)(hua)(hua)，有良(liang)(liang)好的(de)粘 著(zhu)力和(he)(he)透氣性(xing)(xing)(xing)(xing)(xing)(xing)等特點。 目前我國性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)較(jiao)好、應用(yong)(yong)較(jiao)廣泛(fan)的(de)中層皮(pi)革(ge)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑有BN和(he)(he)J卜2，都是(shi)丙烯(xi)(xi)酸樹脂(zhi)(zhi)(zhi)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑。它(ta)們 除具(ju)有丙烯(xi)(xi)酸樹脂(zhi)(zhi)(zhi)涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑一(yi)般(ban)的(de)優(you)點外，還由(you)于采(cai)用(yong)(yong)了(le)(le)交聯(lian)技術(shu)(shu)，在(zai)(zai)耐(nai)(nai)候性(xing)(xing)(xing)(xing)(xing)(xing)和(he)(he)機械強度上(shang)(shang)取得了(le)(le)較(jiao)大 的(de)進展(zhan)。為了(le)(le)進一(yi)步改善中層涂(tu)(tu)(tu)(tu)飾(shi)(shi)(shi)劑的(de)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)，除了(le)(le)采(cai)用(yong)(yong)交聯(lian)技術(shu)(shu)外，還采(cai)用(yong)(yong)了(le)(le)苯乙烯(xi)(xi)接枝技術(shu)(shu)，結果是(shi)比較(jiao)令人滿意的(de)。