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Donlar Corporation Announces Second Quarter and First Half 2003 Results

BEDFORD PARK, Ill.--Aug. 1, 20039, 2003--Donlar Corporation (OTC: DLRC), a world leader in green chemistry, products and technology, today announced that the Company reported revenue of approximately $1.1 million for the second quarter ended June 30, 2003, up 12% from revenue reported for the second quarter of 2002. For the first six months of 2003, the Company reported revenue of approximately $2.2 million, up 17% over the same time period in 2002.

The Company reported revenue for the second quarter of 2003 of $1,136,783 compared to $1,014,403 for the second quarter of 2002, an increase of approximately 12%. The Company continues to see its main revenue growth in the oil field services industry and continues to develop sales in the agricultural market. Net loss in the second quarter of 2003 was reduced to approximately $1.2 million, compared to a net loss of $1.6 million for the second quarter of 2002. The decrease in net loss was primarily attributable to a reduction in interest expense relating to conversion of debt.

The Company reported revenue for the first half of 2003 of $2,218,898 compared to $1,892,087 for the first six months of 2002, an increase of approximately 17%. The Company reported a net loss in the first six months of 2003 of $5.6 million compared to a net loss of approximately $4.1 million for the comparable six-month period in 2002. The increase in net loss was primarily attributable to expenses relating to the merger of Donlar Corporation and Donlar Biosyntrex Corporation in the first quarter 2003, as well as the conversion of debt.

Larry Koskan, President and CEO of Donlar, stated: "We are pleased with the acceptance of Donlar's scale and corrosion inhibitor products in the oil production, water treatment, detergents and mining industries. Our agricultural business has continued to develop with positive results in plant health and yield enhancement in the premium vegetable markets. Our markets are responding to our protein polymer technology, which is leading to revenue growth and wider acceptance of Donlar's products. The Company continues to focus on achieving sales growth in all our markets, maintaining good expense control and developing new products, all demonstrating our commitment of quality products and services to our customers, employees and shareholders."

About Donlar

Donlar Corporation is at the forefront of providing a new class of protein biopolymers that help customers by providing solutions while satisfying environmental concerns for the creation of non-toxic products for a wide range of industrial, agricultural and consumer markets. The Company's non-hazardous, non-toxic, hypoallergenic, environmentally friendly and biodegradable thermal polyaspartate (TPA) biopolymers are protected by 187 Company-owned patents. The Company's applications for its products include the markets of oil field operations, fertilizers, detergents and water treatment. Donlar's beta-protein biopolymers are manufactured in its 50,000 square foot facility located in Peru, Illinois. (www.donlar.com)

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results could differ materially from those projected in the forward-looking statements, which involve a number of risks and uncertainties. The contents of this release should be considered in conjunction with the risk factors in Donlar Corporation's most recent filings with the Securities and Exchange Commission on Forms 10-QSB and 10-KSB and current reports on Form 8-K.

DONLAR CORPORATION
CONDENSED BALANCE SHEET (UNAUDITED)
JUNE 30, 2003

ASSETS
Current assets
  Cash                                                        $91,320
  Receivables                                                 311,920
  Inventories, net                                            724,835
  Prepaid expenses                                             74,173
                                                         -------------
Total current assets                                        1,202,248
Property and equipment, net                                 8,356,279
Patents                                                     1,748,876
Other assets                                                  239,970
                                                         -------------
Total assets                                              $11,547,373
                                                         =============

LIABILITIES AND SHAREHOLDERS' DEFICIT
Current liabilities
  Current portion of convertible debt                     $21,033,352
  Short term notes payable                                     71,000
  Accounts payable                                            648,699
  Accrued expenses                                          4,229,738
                                                         -------------
                 Total current liabilities                 25,982,789
Shareholders' deficit
  Common stock, no par value                               37,068,228
  Senior convertible preferred stock, no par value         19,905,500
  Additional paid-in capital                               84,258,805
  Accumulated deficit                                    (155,667,949)
                                                         -------------
Total shareholders' deficit                               (14,435,416)
                                                         -------------

Total liabilities and shareholders' deficit               $11,547,373
                                                         =============

DONLAR CORPORATION
CONDENSED STATEMENTS OF OPERATIONS
 (UNAUDITED)

                        For the three months       For the six months
                           ended June 30,            ended June 30,
                          2003         2002         2003         2002
                   ------------ ------------ ------------ ------------
Revenues            $1,136,783   $1,014,403   $2,218,898   $1,892,087

Cost of revenue        854,715      752,072    1,532,830    1,610,059
Research and
 Development           147,954      133,216      308,832      270,152
Selling, general
 and administrative    522,138      255,087    1,266,707    1,029,543
                   ------------ ------------ ------------ ------------
Total operating
 expenses            1,524,807    1,140,375    3,108,369    2,909,754
                   ------------ ------------ ------------ ------------

Loss from
 operations           (388,024)    (125,972)    (889,471)  (1,017,667)

Other income
 (expense)
  Interest expense    (798,252)  (1,610,141)  (2,138,925)  (2,977,436)
  Debt conversion
   expense                   -            -   (2,579,527)    (289,655)
  Gain on disposal
   of fixed assets           -            -            -       74,478
  Other                  7,587      139,398        7,588      160,743
                   ------------ ------------ ------------ ------------
Total other expense   (790,665)  (1,470,743)  (4,710,864)  (3,031,870)
                   ------------ ------------ ------------ ------------

Loss before income
 taxes              (1,178,689)  (1,596,715)  (5,600,335)  (4,049,537)
Provision for
 income taxes                -            -            -            -
                   ------------ ------------ ------------ ------------
Net loss before
 extraordinary item (1,178,689)  (1,596,715)  (5,600,335)  (4,049,537)
Extraordinary loss
 on retirement of
 debt                        -            -            -   (1,212,120)
                   ------------ ------------ ------------ ------------
Net loss           $(1,178,689) $(1,596,715) $(5,600,335) $(5,261,657)
                   ============ ============ ============ ============

Net loss per common
 share:
Basic:                   (0.06)       (0.06)       (0.27)       (0.20)
Diluted:                 (0.06)       (0.06)       (0.27)       (0.20)

Weighted average
 shares
of common stock
 outstanding:
  Basic             20,793,360   25,831,050   20,793,360   25,831,050
  Diluted           20,793,360   25,831,050   20,793,360   25,831,050


DONLAR CORPORATION
CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
FOR THE SIX MONTHS ENDED JUNE 30,
                                                    2003         2002
                                             ------------ ------------
Cash flows from operating activities
  Net loss                                   $(5,600,335) $(5,261,657)
  Adjustments to reconcile net loss to net
   cash
   used in operating activities
     Depreciation and amortization               544,793      542,343
     Issuance of Common Stock for services             -       27,536
     Interest expense related to amortization
      of debt discount                            44,955    2,007,544
     Debt conversion expenses                  2,579,527      289,655
     Gain on disposal of fixed assets                  -      (74,478)
     Change in assets and liabilities
         Receivables                              (3,400)      29,628
         Inventories                             204,981      576,834
         Prepaid expenses and other assets       (58,605)      (9,594)
         Accounts payable                        377,904   (1,002,911)
         Accrued expenses                      1,941,704     (399,980)
                                             ------------ ------------
           Net cash provided by (used in)
            operating activities                  31,524   (3,275,080)

Cash flows from investing activities
  Proceeds from sale of property and
   equipment                                           -      103,942
  Purchase of property and equipment             (42,542)     (34,715)
  Purchase of patents                                  -      (83,255)
                                             ------------ ------------
           Net cash used in investing
            activities                           (42,542)     (14,028)

Cash flows from financing activities
  Principal repayments of convertible notes            -  (17,111,948)
  Proceeds from issuance of convertible notes          -   20,970,107
  Principal repayments of notes payable                -     (263,000)
  Proceeds from notes payable                          -       11,000
  Deferred financing costs                             -     (270,419)
                                             ------------ ------------
           Net cash provided by financing
            activities                                 -    3,335,740
                                             ------------ ------------

Net (decrease) increase in cash and cash
 equivalents                                     (11,018)      46,632
Cash and cash equivalents at beginning of
 period                                          102,338        3,746
                                             ------------ ------------
Cash and cash equivalents at end of period       $91,320      $50,378
                                             ============ ============

Supplemental disclosure of cash flow
 information:
  Interest paid                                   $3,332      $28,184
  Income tax paid                                      -            -