公开(公告)号：WO1993015017A1

公开(公告)日：1993-08-05

申请号：PCT/US1993000202

申请日：1993-01-11

Applicant: ISP INVESTMENTS, INC.

Inventor： ISP INVESTMENTS, INC. ,  LOGIN, Robert, B. ,  MERIANOS, John, J. ,  BISS, Russell, B. ,  GARELICK, Paul

IPC: C01B15/01

CPC classification number: C11D3/3945 ,  A01N59/00 ,  A61K8/22 ,  A61K8/42 ,  A61K8/8176 ,  A61Q5/08 ,  A61Q11/00 ,  C01B15/037 ,  C11D3/3776 ,  C11D3/394 ,  A01N2300/00

Abstract: Urea-hydrogen peroxide-polyvinylpyrrolidone (PVP) in the form of a free-flowing powder is stable against decomposition in water and alcohol solvents. The product is obtained by spraying an aqueous solution of urea-hydrogen peroxide onto a fluidized bed of PVP at a rate of about 0.5-30 g of solution/minute/kg PVP in the bed, preferably, about 1-3 g/min/kg PVP, and drying. The product contains about 5-20 % by weight H2O2 and less than about 5 % water.

公开(公告)号：WO1993002117A1

公开(公告)日：1993-02-04

申请号：PCT/US1992005653

申请日：1992-07-06

Applicant: ISP INVESTMENTS, INC.

Inventor： ISP INVESTMENTS, INC. ,  KWAK, Yoon, T. ,  KOPOLOW, Stephen, L. ,  HELIOFF, Michael, W. ,  TAZI, Mohammed

IPC: C08F225/08

CPC classification number: A61Q5/06 ,  A61K8/8164 ,  A61Q17/04 ,  C08F216/14 ,  C08F222/06

Abstract: What is provided herein is a sunscreen composition consisting essentially of a crosslinked, neutralized terpolymer of maleic anhydride, a C1-C5 alkyl vinyl ether and a C12-C14 alpha-olefin monomer as a thickener; water; an ultraviolet sunscreening agent; and an emulsifier. In the prefered form of the invention, the monomers are present in a molar ratio of about 1:0.90-0.99:0.01-0.10, respectively, and are crosslinked with about 2-8 wt.% of a crosslinking agent based on the total weight of the monomers. Suitably, the crosslinked terpolymer is neutralized to increase water solubility.

Abstract translation: 本文提供的防晒组合物主要由交联的中和的马来酸酐三元共聚物，C 1 -C 5烷基乙烯基醚和作为增稠剂的C 12 -C 14α-烯烃单体组成。 水; 紫外线防晒剂; 和乳化剂。 在本发明的优选形式中，单体分别以约1:0.90-0.99:0.01至0.10的摩尔比存在，并以基于总重量的约2-8重量％的交联剂进行交联 的单体。 适当地，交联的三元共聚物被中和以增加水溶性。

公开(公告)号：WO1996036649A1

公开(公告)日：1996-11-21

申请号：PCT/US1996003687

申请日：1996-03-18

Applicant: ISP INVESTMENTS, INC.

Inventor： ISP INVESTMENTS, INC. ,  KWAK, Yoon, Tae ,  KOPOLOW, Stephen, L.

IPC: C08F08/12

CPC classification number: C08F8/12 ,  C08F2810/20 ,  C08F222/06 ,  C08F216/18 ,  C08F236/20 ,  C08F8/32 ,  C08F8/48

Abstract: A process for hydrolyzing and neutralizing a crosslinked polymer of maleic anhydride and a C1-C5 alkyl vinyl ether, and, optionally a hydrophobic monomer, in anhydride form substantially instantaneously in water at room temperature, which comprises reacting about 0.1-4 % by weight of the crosslinked polymer in water at room temperature with ammonium hydroxide base, with stirring, to form a gel solution.

Abstract translation: 水解和中和马来酸酐和C 1 -C 5烷基乙烯基醚的交联聚合物和任选的疏水性单体的酸酐在室温下基本上瞬间在水中形成的方法，该方法包括使约0.1-4重量％ 交联聚合物在水中在室温下与氢氧化铵碱搅拌，形成凝胶溶液。

公开(公告)号：WO1993019126A1

公开(公告)日：1993-09-30

申请号：PCT/US1993001399

申请日：1993-02-18

Applicant: ISP INVESTMENTS, INC.

Inventor： ISP INVESTMENTS, INC. ,  ZAMORA, John, N. ,  CARLIN, Alan, J. ,  TAZI, Mohammed

IPC: C08L31/00

CPC classification number: C08F8/14

Abstract: A process for the production of an ethanol solution of an ethyl or butyl alkyl half-ester copolymer of maleic anhydride and an alkyl vinyl ether which comprises: (a) copolymerizing the monomers in acetone as solvent by simultaneously feeding molten maleic anhydride, a molar excess of methyl vinyl ether, and a solution of a free radical initiator in acetone, into a reactor precharged with acetone, at about 68-85 °C, preferably 70-80 °C; (b) esterifying the acetone solution of said copolymer with ethanol or butanol; and (c) solvent exchanging ethanol for acetone by continuously injecting vapors of ethanol at about 85-95°C into said copolymer solution while simultaneously distilling out acetone therefrom at atmospheric pressure.